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Cisco IOS IPv6 Command Reference
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IPv6 Commands: a to clear ipv6 mld
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IPv6 Commands: clear ipv6 mo to ct
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IPv6 Commands: d to im
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IPv6 Commands: ipv6 a to ipv6 g
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IPv6 Commands: ipv6 h to ipv6 mi
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IPv6 Commands: ipv6 mo to ipv6 ospf da
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IPv6 Commands: ipv6 ospf de to ipv6 sp
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IPv6 Commands: ipv6 su to m
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IPv6 Commands: n to re
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IPv6 Commands: ro to show bgp la
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IPv6 Commands: show bgp ipv6 ne to show ipv6 cef sw
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IPv6 Commands: show ipv6 cef tr to show ipv6 in
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IPv6 Commands: show ipv6 lo to show ipv6 mt
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IPv6 Commands: show ipv6 na to show ipv6 pr
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IPv6 Commands: show ipv6 ri to si
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IPv6 Commands: sn to v
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Index
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Feedback
Contents
IPv6 Commands: show ipv6 ri to si
- show ipv6 rip
- show ipv6 route
- show ipv6 route shortcut
- show ipv6 route summary
- show ipv6 route vrf
- show ipv6 routers
- show ipv6 rpf
- show ipv6 snooping capture-policy
- show ipv6 snooping counters
- show ipv6 snooping features
- show ipv6 snooping policies
- show ipv6 source-guard policy
- show ipv6 spd
- show ipv6 static
- show ipv6 traffic
- show ipv6 tunnel
- show ipv6 virtual-reassembly
- show ipv6 virtual-reassembly features
- show ipv6 wccp
- show ipv6 wccp global counters
- show isis ipv6 rib
- show monitor event-trace vpn-mapper
- show ospfv3 border-routers
- show ospfv3 database
- show ospfv3 events
- show ospfv3 flood-list
- show ospfv3 graceful-restart
- show ospfv3 interface
- show ospfv3 max-metric
- show ospfv3 neighbor
- show ospfv3 request-list
- show ospfv3 retransmission-list
- show ospfv3 statistic
- show ospfv3 summary-prefix
- show ospfv3 timers rate-limit
- show ospfv3 traffic
- show ospfv3 virtual-links
- show platform 6rd tunnel-endpt
- show platform software ipv6-multicast
- show platform software vpn
- show tunnel 6rd
- show tunnel 6rd destination
- show tunnel 6rd prefix
- sip address
- sip domain-name
show ipv6 rip
To display information about current IPv6 Routing Information Protocol (RIP) processes, use the show ipv6 rip command in user EXEC or privileged EXEC mode.
Cisco IOS XE Release 3.9S, Cisco IOS Release 15.3(2)S, and Later Releases
show ipv6 rip [ name] [ vrf vrf-name] [ database | next-hops ]
Releases Prior to Cisco IOS XE Release 3.9S and Cisco IOS Release 15.3(2)S
show ipv6 rip [ name] [ database | next-hops ]
Syntax Description
name
(Optional) Name of the RIP process. If the name is not entered, details of all configured RIP processes are displayed.
vrf vrf-name
(Optional) Displays information about the specified Virtual Routing and Forwarding (VRF) instance.
database
(Optional) Displays information about entries in the specified RIP IPv6 routing table.
next-hops
(Optional) Displays information about the next hop addresses for the specified RIP IPv6 process. If no RIP process name is specified, the next-hop addresses for all RIP IPv6 processes are displayed.
Command History
Release
Modification
12.2(2)T
This command was introduced.
12.0(21)ST
This command was integrated into Cisco IOS Release 12.0(21)ST.
12.0(22)S
This command was integrated into Cisco IOS Release 12.0(22)S. The name argument and the database and next-hops keywords were added.
12.2(13)T
The command was modified. The name argument, and the database and next-hops keywords were added.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(25)SG
This command was integrated into Cisco IOS Release 12.2(25)SG.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was implemented on Cisco 1000 Series Aggregation Services Routers.
Cisco IOS XE Release 3.9S
This command was modified. The vrf vrf-name keyword/argument pair was added.
15.3(2)S
This command was integrated into Cisco IOS Release 15.3(2)S.
15.3(3)M
This command was integrated into Cisco IOS Release 15.3(3)M.
Examples
The following is sample output from the show ipv6 rip command:
Device# show ipv6 rip RIP process "one", port 521, multicast-group FF02::9, pid 55 Administrative distance is 25. Maximum paths is 4 Updates every 30 seconds, expire after 180 Holddown lasts 0 seconds, garbage collect after 120 Split horizon is on; poison reverse is off Default routes are not generated Periodic updates 8883, trigger updates 2 Interfaces: Ethernet2 Redistribution: RIP process "two", port 521, multicast-group FF02::9, pid 61 Administrative distance is 120. Maximum paths is 4 Updates every 30 seconds, expire after 180 Holddown lasts 0 seconds, garbage collect after 120 Split horizon is on; poison reverse is off Default routes are not generated Periodic updates 8883, trigger updates 0 Interfaces: None Redistribution:The table below describes the significant fields shown in the display.
Table 1 show ipv6 rip Field Descriptions Field
Description
RIP process
The name of the RIP process.
port
The port that the RIP process is using.
multicast-group
The IPv6 multicast group of which the RIP process is a member.
pid
The process identification number (pid) assigned to the RIP process.
Administrative distance
Used to rank the preference of sources of routing information. Connected routes have an administrative distance of 1 and are preferred over the same route learned by a protocol with a larger administrative distance value.
Updates
The value (in seconds) of the update timer.
expire
The interval (in seconds) in which updates expire.
Holddown
The value (in seconds) of the hold-down timer.
garbage collect
The value (in seconds) of the garbage-collect timer.
Split horizon
The split horizon state is either on or off.
poison reverse
The poison reverse state is either on or off.
Default routes
The origination of a default route into RIP. Default routes are either generated or not generated.
Periodic updates
The number of RIP update packets sent on an update timer.
trigger updates
The number of RIP update packets sent as triggered updates.
The following is sample output from the show ipv6 rip database command.
Device# show ipv6 rip one database RIP process "one", local RIB 2001:72D:1000::/64, metric 2 Ethernet2/2001:DB8:0:ABCD::1, expires in 168 secs 2001:72D:2000::/64, metric 2, installed Ethernet2/2001:DB8:0:ABCD::1, expires in 168 secs 2001:72D:3000::/64, metric 2, installed Ethernet2/2001:DB8:0:ABCD::1, expires in 168 secs Ethernet1/2001:DB8::1, expires in 120 secs 2001:72D:4000::/64, metric 16, expired, [advertise 119/hold 0] Ethernet2/2001:DB8:0:ABCD::1 3004::/64, metric 2 tag 2A, installed Ethernet2/2001:DB8:0:ABCD::1, expires in 168 secsThe table below describes the significant fields shown in the display.
Table 2 show ipv6 rip database Field Descriptions Field
Description
RIP process
The name of the RIP process.
2001:72D:1000::/64
The IPv6 route prefix.
metric
Metric for the route.
installed
Route is installed in the IPv6 routing table.
Ethernet2/2001:DB8:0:ABCD::1
Interface and LL next hop through which the IPv6 route was learned.
expires in
The interval (in seconds) before the route expires.
advertise
For an expired route, the value (in seconds) during which the route will be advertised as expired.
hold
The value (in seconds) of the hold-down timer.
tag
Route tag.
The following is sample output from the show ipv6 rip next-hops command.
Device# show ipv6 rip one next-hops RIP process "one", Next Hops FE80::210:7BFF:FEC2:ACCF/Ethernet4/2 [1 routes] FE80::210:7BFF:FEC2:B286/Ethernet4/2 [2 routes]The table below describes the significant fields shown in the display.
The following is sample output from the show ipv6 rip vrf command:
Device# show ipv6 rip vrf red RIP VRF "red", port 521, multicast-group 2001:DB8::/32, pid 295 Administrative distance is 120. Maximum paths is 16 Updates every 30 seconds, expire after 180 Holddown lasts 0 seconds, garbage collect after 120 Split horizon is on; poison reverse is off Default routes are not generated Periodic updates 99, trigger updates 3 Full Advertisement 0, Delayed Events 0 Interfaces: Ethernet0/1 Loopback2 Redistribution: NoneThe table below describes the significant fields shown in the display.
Table 4 show ipv6 rip vrf Field Descriptions Field
Description
RIP VRF
The name of the RIP VRF.
port
The port that the RIP process is using.
multicast-group
The IPv6 multicast group of which the RIP process is a member.
Administrative distance
Used to rank the preference of sources of routing information. Connected routes have an administrative distance of 1 and are preferred over the same route learned by a protocol with a larger administrative distance value.
Updates
The value (in seconds) of the update timer.
expires after
The interval (in seconds) in which updates expire.
Holddown
The value (in seconds) of the hold-down timer.
garbage collect
The value (in seconds) of the garbage-collect timer.
Split horizon
The split horizon state is either on or off.
poison reverse
The poison reverse state is either on or off.
Default routes
The origination of a default route into RIP. Default routes are either generated or not generated.
Periodic updates
The number of RIP update packets sent on an update timer.
trigger updates
The number of RIP update packets sent as triggered updates.
The following is sample output from show ipv6 rip vrf next-hops command:
Device# show ipv6 rip vrf blue next-hops RIP VRF "blue", local RIB AAAA::/64, metric 2, installed Ethernet0/0/FE80::A8BB:CCFF:FE00:7C00, expires in 177 secs
Table 5 show ipv6 rip vrf next-hops Field Descriptions Field
Description
RIP VRF
The name of the RIP VRF.
metric
Metric for the route.
installed
Route is installed in the IPv6 routing table.
Ethernet0/0/FE80::A8BB:CCFF:FE00:7C00
The next hop address and interface through which it was learned. Next hops are either the addresses of IPv6 RIP neighbors from which we have learned routes, or explicit next hops received in IPv6 RIP advertisements.
Note An IPv6 RIP neighbor may choose to advertise all its routes with an explicit next hop. In this case the address of the neighbor would not appear in the next hop display.
expires in
The interval (in seconds) before the route expires.
The following is sample output from show ipv6 rip vrf database command:
Device# show ipv6 rip vrf blue database RIP VRF "blue", Next Hops FE80::A8BB:CCFF:FE00:7C00/Ethernet0/0 [1 paths]
Table 6 show ipv6 rip vrf database Field Descriptions Field
Description
RIP VRF
The name of the RIP VRF.
FE80::A8BB:CCFF:FE00:7C00/Ethernet0/0
Interface and LL next hop through which the IPv6 route was learned.
1 paths
Indicates the number of unique paths to this router that exist in the routing table.
show ipv6 route
To display contents of the IPv6 routing table, use the show ipv6 route command in user EXEC or privileged EXEC mode.
show ipv6 route [ ipv6-address | ipv6-prefix/prefix-length [ longer-prefixes ] | [ protocol ] | [ repair] | [ updated [ boot-up ] [ day month ] [ time ] ] | interface type number | nd | nsf | table table-id | watch ]
Syntax Description
ipv6-address
(Optional) Displays routing information for a specific IPv6 address.
ipv6-prefix
(Optional) Displays routing information for a specific IPv6 network.
/prefix-length
(Optional) The length of the IPv6 prefix. A decimal value that indicates how many of the high-order contiguous bits of the address comprise the prefix (the network portion of the address). A slash mark must precede the decimal value.
longer-prefixes
(Optional) Displays output for longer prefix entries.
protocol
(Optional) The name of a routing protocol or the keyword connected, local, mobile, or static. If you specify a routing protocol, use one of the following keywords: bgp, isis, eigrp, ospf, or rip.
repair
(Optional) Displays routes with repair paths.
updated
(Optional) Displays routes with time stamps.
boot-up
(Optional) Displays routing information since bootup.
day month
(Optional) Displays routes since the specified day and month.
time
(Optional) Displays routes since the specified time, in hh:mm format.
interface
(Optional) Displays information about the interface.
type
(Optional) Interface type.
number
(Optional) Interface number.
nd
(Optional) Displays only routes from the IPv6 Routing Information Base (RIB) that are owned by Neighbor Discovery (ND).
nsf
(Optional) Displays routes in the nonstop forwarding (NSF) state.
repair
(Optional)
table table-id
(Optional) Displays IPv6 RIB table information for the specified table ID. The table ID must be in hexadecimal format. The range is from 0 to 0-0xFFFFFFFF.
watch
(Optional) Displays information about route watchers.
Command Default
If none of the optional syntax elements is chosen, all IPv6 routing information for all active routing tables is displayed.
Command History
Release
Modification
12.2(2)T
This command was introduced.
12.2(8)T
This command was modified. The isis keyword was added, and the I1 - ISIS L1, I2 - ISIS L2, and IA - ISIS interarea fields were included in the command output.
12.0(21)ST
This command was integrated into Cisco IOS Release 12.0(21)ST.
12.0(22)S
This command was integrated into Cisco IOS Release 12.0(22)S. The timer information was removed, and an indicator was added to display IPv6 Multiprotocol Label Switching (MPLS) interfaces.
12.2(13)T
This command was modified. The timer information was removed, and an indicator was added to display IPv6 MPLS virtual interfaces.
12.2(14)S
This command was modified. The longer-prefixes keyword was added.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(25)SG
This command was integrated into Cisco IOS Release 12.2(25)SG.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was implemented on Cisco ASR 1000 Series Aggregation Services Routers.
12.4(24)T
This command was modified in a release earlier than Cisco IOS Release 12.4(24)T. The table, nsf, watch, and updated keywords and the day, month, table-id, and time arguments were added.
15.2(2)S
This command was modified. The command output was enhanced to include route tag values in dotted-decimal format.
Cisco IOS XE Release 3.6S
This command was modified. The command output was enhanced to include route tag values in dotted-decimal format.
15.1(1)SY
The nd keyword was added.
Cisco IOS XE Release 3.2SE
This command was integrated into Cisco IOS XE Release 3.2SE.
15.2(2)SA2
This command was implemented on the Cisco ME 2600X Series Ethernet Access Switches.
Usage Guidelines
The show ipv6 route command provides output similar to the show ip route command, except that the information is IPv6-specific.
When the ipv6-address or ipv6-prefix/prefix-length argument is specified, the longest match lookup is performed from the routing table, and only route information for that address or network is displayed. When a routing protocol is specified, only routes for that protocol are displayed. When the connected, local, mobile, or static keyword is specified, only the specified type of route is displayed. When the interface keyword and type and number arguments are specified, only routes for the specified interface are displayed.
Examples
The following is sample output from the show ipv6 route command when no keywords or arguments are specified:
Device# show ipv6 route IPv6 Routing Table - 9 entries Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP I1 - ISIS L1, I2 - ISIS L2, IA - IIS interarea B 2001:DB8:4::2/48 [20/0] via FE80::A8BB:CCFF:FE02:8B00, Serial6/0 L 2001:DB8:4::3/48 [0/0] via ::, Ethernet1/0 C 2001:DB8:4::4/48 [0/0] via ::, Ethernet1/0 LC 2001:DB8:4::5/48 [0/0] via ::, Loopback0 L 2001:DB8:4::6/48 [0/0] via ::, Serial6/0 C 2001:DB8:4::7/48 [0/0] via ::, Serial6/0 S 2001:DB8:4::8/48 [1/0] via 2001:DB8:1::1, Null L FE80::/10 [0/0] via ::, Null0 L FF00::/8 [0/0] via ::, Null0The table below describes the significant fields shown in the display.
Table 7 show ipv6 route Field Descriptions Field
Description
Codes:
Indicates the protocol that derived the route. Values are as follows:
2001:DB8:4::2/48
Indicates the IPv6 prefix of the remote network.
[20/0]
The first number in brackets is the administrative distance of the information source; the second number is the metric for the route.
via FE80::A8BB:CCFF:FE02:8B00
Specifies the address of the next device to the remote network.
When the ipv6-address or ipv6-prefix/prefix-length argument is specified, only route information for that address or network is displayed. The following is sample output from the show ipv6 route command when IPv6 prefix 2001:DB8::/35 is specified. The fields in the display are self-explanatory.
Device# show ipv6 route 2001:DB8::/35 IPv6 Routing Table - 261 entries Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea B 2001:DB8::/35 [20/3] via FE80::60:5C59:9E00:16, Tunnel1When you specify a protocol, only routes for that particular routing protocol are shown. The following is sample output from the show ipv6 route bgp command. The fields in the display are self-explanatory.
Device# show ipv6 route bgp IPv6 Routing Table - 9 entries Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea B 2001:DB8:4::4/64 [20/0] via FE80::A8BB:CCFF:FE02:8B00, Serial6/0The following is sample output from the show ipv6 route local command. The fields in the display are self-explanatory.
Device# show ipv6 route local IPv6 Routing Table - 9 entries Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea L 2001:DB8:4::2/128 [0/0] via ::, Ethernet1/0 LC 2001:DB8:4::1/128 [0/0] via ::, Loopback0 L 2001:DB8:4::3/128 [0/0] via ::, Serial6/0 L FE80::/10 [0/0] via ::, Null0 L FF00::/8 [0/0] via ::, Null0The following is sample output from the show ipv6 route command when the 6PE multipath feature is enabled. The fields in the display are self-explanatory.
Device# show ipv6 route IPv6 Routing Table - default - 19 entries Codes:C - Connected, L - Local, S - Static, R - RIP, B - BGP U - Per-user Static route I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2 . . . B 2001:DB8::/64 [200/0] via ::FFFF:172.16.0.1 via ::FFFF:172.30.30.1show ipv6 route shortcut
To display the IPv6 routes that contain shortcuts, use the show ipv6 route shortcutcommand in privileged EXEC mode.
Usage Guidelines
The show ipv6 route shortcut command displays only the routes that have overriding shortcut paths.
Examples
The following is sample output from the show ipv6 route shortcutcommand:
Router# show ipv6 route shortcut IPv6 Routing Table - default - 7 entries Codes: C - Connected, L - Local, S - Static, U - Per-user Static route B - BGP, HA - Home Agent, MR - Mobile Router, R - RIP H - NHRP, I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea IS - ISIS summary, D - EIGRP, EX - EIGRP external, NM - NEMO ND - Neighbor Discovery, l - LISP O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2 ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2 S 7000:1::/64 [1/0] via 4000:1:1::1, Ethernet1/1 [Shortcut] via 5000:1:1::1, Ethernet1/1 [Shortcut] via Ethernet1/1, directly connected S 8000:1:1::/64 [1/0] via 6000:1:1::1, Ethernet0/1 [Shortcut] via Ethernet0/0, directly connectedThe table below describes the significant fields shown in the display.
Table 8 show ipv6 route shortcut Field Descriptions Field
Description
Codes:
Indicates the protocol that derived the route. Values are as follows:
S 7000:1::/64 [1/0]
Indicates paths that may be shortcut paths.
via 4000:1:1::1, Ethernet1/1
Indicates a path that may be a shortcut path.
via 5000:1:1::1, Ethernet1/1 [Shortcut]
Indicates a path that may be a shortcut path.
via Ethernet1/1, directly connected
Shows routes connected to the router directly.
show ipv6 route summary
To display the current contents of the IPv6 routing table in summary format, use the show ipv6 route summarycommand in user EXEC or privileged EXEC mode.
Command History
Release
Modification
12.2(2)T
This command was introduced.
12.0(21)ST
This command was integrated into Cisco IOS Release 12.0(21)ST.
12.0(22)S
This command was integrated into Cisco IOS Release 12.0(22)S.
12.2(14)S
This command was integrated into Cisco IOS Release 12.2(14)S.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(25)SG
This command was integrated into Cisco IOS Release 12.2(25)SG.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Examples
The following is sample output from the show ipv6 route summary command:
Router# show ipv6 route summary IPv6 Routing Table Summary - 257 entries 37 local, 35 connected, 25 static, 0 RIP, 160 BGP Number of prefixes: /16: 1, /24: 46, /28: 10, /32: 5, /35: 25, /40: 1, /48: 63, /64: 19 /96: 15, /112: 1, /126: 31, /127: 4, /128: 36The table below describes the significant fields shown in the display.
Table 9 show ipv6 route summary Field Descriptions Field
Description
entries
Number of entries in the IPv6 routing table.
Route source
Number of routes that are present in the routing table for each route source, which can be local routes, connected routes, static routes, a routing protocol, prefix and address or name, and longer prefixes and address or name.
Routing protocols can include RIP, IS-IS, OSPF, and BGP.
Other route sources can be connected, local, static, or a specific interface.
Number of prefixes:
Number of routing table entries for given prefix length.
show ipv6 route vrf
To display IPv6 routing table information associated with a VPN routing and forwarding (VRF) instance, use the show ipv6 route vrf command in user EXEC or privileged EXEC mode.
show ipv6 route vrf { vrf-name | vrf-number } [ tag { tag-value | tag-value-dotted-decimal [ mask ] } ]
Syntax Description
vrf-name
Name assigned to the VRF.
vrf-number
Hexadecimal number assigned to the VRF.
tag
(Optional) Displays information about route tags in the VRF table.
tag-value
(Optional) Displays route tag value in plain decimals.
tag-value-dotted-decimal
(Optional) Displays route tag values in dotted decimals.
mask
(Optional) Route tag wildcard mask.
Command History
Release
Modification
12.2(33)SRB
This command was introduced.
12.2(33)SB
This command was integrated into Cisco IOS Release 12.2(33)SB.
12.2(33)SXI
This command was integrated into Cisco IOS Release 12.2(33)SXI.
15.2(2)S
This command was integrated into Cisco IOS Release 15.2(2)S. The tag keyword and the tag-value, tag-value-dotted-decimal, and mask arguments were added to enable the display of route tags as plain decimals or dotted decimals in the command output.
Cisco IOS XE Release 3.6S
This command was integrated into Cisco IOS XE Release 3.6S. The tag keyword and the tag-value, tag-value-dotted-decimal, and mask arguments were added to enable the display of route tags as plain decimals or dotted decimals in the command output.
15.2(4)M
This command was integrated into Cisco IOS Release 15.2(4)M.
15.2(2)SNI
This command was implemented on the Cisco ASR 901 Series Aggregation Services Routers.
Examples
The following sample output from the show ipv6 route vrf command displays information about the IPv6 routing table associated with VRF1:
Device# show ipv6 route vrf VRF1 IPv6 Routing Table VRF1 - 6 entries Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP U - Per-user Static route I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2 C 2001:DB8:4::2/48 [0/0] via ::, FastEthernet0/0 L 2001:DB8:4::3/48 [0/0] via ::, FastEthernet0/0 B 2001:DB8:4::4/48 [200/0] via ::FFFF:192.168.1.4, B 2001:DB8:4::5/48 [20/1] via 2001:8::1, C 2001:DB8:4::6/48 [0/0] via ::, Loopback1 L 2001:DB8:4::7/48 [0/0] via ::, Loopback1The following sample output from the show ip route vrf vrf-name tag command displays information about tagged IPv6 routes in vrf1:
Device# show ipv6 route vrf vrf1 tag 0.0.0.6 IPv6 Routing Table - vrf1 - 2 entries Codes: C - Connected, L - Local, S - Static, U - Per-user Static route B - BGP, R - RIP, H - NHRP, I1 - ISIS L1 I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary, D - EIGRP EX - EIGRP external, ND - ND Default, NDp - ND Prefix, DCE - Destination NDr - Redirect, l - LISP O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2 ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2 Routing entry for 2001::/32 Known via "static", distance 1, metric 0 Tag 0.0.0.6 Route count is 1/1, share count 0 Routing paths: directly connected via Null0 Last updated 00:00:23 agoThe table below describes the significant fields shown in the displays.
show ipv6 routers
To display IPv6 router advertisement (RA) information received from on-link devices, use the show ipv6 routers command in user EXEC or privileged EXEC mode.
Syntax Description
interface -type
(Optional) Specifies the Interface type.
interface -number
(Optional) Specifies the Interface number.
conflicts
(Optional) Displays RAs that differ from the RAs configured for a specified interface.
vrf vrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
detail
(Optional) Provides detail about the eligibility of the neighbor for election as the default device.
Command Default
When an interface is not specified, on-link RA information is displayed for all interface types. (The term onl-ink refers to a locally reachable address on the link.)
Command History
Release
Modification
12.2(2)T
This command was introduced.
12.0(21)ST
This command was integrated into Cisco IOS Release 12.0(21)ST.
12.0(22)S
This command was integrated into Cisco IOS Release 12.0(22)S.
12.2(14)S
This command was integrated into Cisco IOS Release 12.2(14)S.
12.4(2)T
Command output was updated to show the state of the default router preference (DRP) preference value as advertised by other devices.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(25)SG
This command was integrated into Cisco IOS Release 12.2(25)SG.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
15.0(2)SE
The vrf vrf-name keyword and argument pair and the detail keyword were added.
Usage Guidelines
Devices that advertise parameters that differ from the RA parameters configured for the interface on which the RAs are received are marked as conflicting.
Examples
The following is sample output from the show ipv6 routers command when entered without an IPv6 interface type and number:
Device# show ipv6 routers Device FE80::83B3:60A4 on Tunnel5, last update 3 min Hops 0, Lifetime 6000 sec, AddrFlag=0, OtherFlag=0 Reachable time 0 msec, Retransmit time 0 msec Prefix 3FFE:C00:8007::800:207C:4E37/96 autoconfig Valid lifetime -1, preferred lifetime -1 Device FE80::290:27FF:FE8C:B709 on Tunnel57, last update 0 min Hops 64, Lifetime 1800 sec, AddrFlag=0, OtherFlag=0 Reachable time 0 msec, Retransmit time 0 msecThe following sample output shows a single neighboring device that is advertising a high default device preference and is indicating that it is functioning as a Mobile IPv6 home agent on this link.
Device# show ipv6 routers IPV6 ND Routers (table: default) Device FE80::100 on Ethernet0/0, last update 0 min Hops 64, Lifetime 50 sec, AddrFlag=0, OtherFlag=0, MTU=1500 HomeAgentFlag=1, Preference=High Reachable time 0 msec, Retransmit time 0 msec Prefix 2001::100/64 onlink autoconfig Valid lifetime 2592000, preferred lifetime 604800The following table describes the significant fields shown in the displays.
Table 11 show ipv6 routers Field Descriptions Field
Description
Hops
The configured hop limit value for the RA.
Lifetime
The configured lifetime value for the RA. A value of 0 indicates that the device is not a default device. A value other than 0 indicates that the device is a default device.
AddrFlag
If the value is 0, the RA received from the device indicates that addresses are not configured using the stateful autoconfiguration mechanism. If the value is 1, the addresses are configured using this mechanism.
OtherFlag
If the value is 0, the RA received from the device indicates that information other than addresses is not obtained using the stateful autoconfiguration mechanism. If the value is 1, other information is obtained using this mechanism. (The value of OtherFlag can be 1 only if the value of AddrFlag is 1.)
MTU
The maximum transmission unit (MTU).
HomeAgentFlag=1
The value can be either 0 or 1. A value of 1 indicates that the device from which the RA was received is functioning as a mobile IPv6 home agent on this link, and a value of 0 indicates it is not functioning as a mobile IPv6 home agent on this link.
Preference=High
The DRP value, which can be high, medium, or low.
Retransmit time
The configured RetransTimer value. The time value to be used on this link for neighbor solicitation transmissions, which are used in address resolution and neighbor unreachability detection. A value of 0 means the time value is not specified by the advertising device.
Prefix
A prefix advertised by the device. Also indicates if on-link or autoconfig bits were set in the RA message.
Valid lifetime
The length of time (in seconds) relative to the time the advertisement is sent that the prefix is valid for the purpose of on-link determination. A value of -1 (all ones, 0xffffffff) represents infinity.
preferred lifetime
The length of time (in seconds) relative to the time the advertisements is sent that addresses generated from the prefix via address autoconfiguration remain valid. A value of -1 (all ones, 0xffffffff) represents infinity.
When the interface-type and interface-number arguments are specified, RA details about that specific interface are displayed. The following is sample output from the show ipv6 routers command when entered with an interface type and number:
Device# show ipv6 routers tunnel 5 Device FE80::83B3:60A4 on Tunnel5, last update 5 min Hops 0, Lifetime 6000 sec, AddrFlag=0, OtherFlag=0 Reachable time 0 msec, Retransmit time 0 msec Prefix 3FFE:C00:8007::800:207C:4E37/96 autoconfig Valid lifetime -1, preferred lifetime -1Entering the conflicts keyword with the show ipv6 routers command displays information for devices that are advertising parameters different from the parameters configured for the interface on which the advertisements are being received, as the following sample output shows:
Device# show ipv6 routers conflicts Device FE80::203:FDFF:FE34:7039 on Ethernet1, last update 1 min, CONFLICT Hops 64, Lifetime 1800 sec, AddrFlag=0, OtherFlag=0 Reachable time 0 msec, Retransmit time 0 msec Prefix 2003::/64 onlink autoconfig Valid lifetime -1, preferred lifetime -1 Device FE80::201:42FF:FECA:A5C on Ethernet1, last update 0 min, CONFLICT Hops 64, Lifetime 1800 sec, AddrFlag=0, OtherFlag=0 Reachable time 0 msec, Retransmit time 0 msec Prefix 2001::/64 onlink autoconfig Valid lifetime -1, preferred lifetime -1Use of the detail keyword provides information about the preference rank of the device, its eligibility for election as default device, and whether the device has been elected:
Device# show ipv6 routers detail Device FE80::A8BB:CCFF:FE00:5B00 on Ethernet0/0, last update 0 min Rank 0x811 (elegible), Default Router Hops 64, Lifetime 1800 sec, AddrFlag=0, OtherFlag=0, MTU=1500 HomeAgentFlag=0, Preference=Medium, trustlevel = 0 Reachable time 0 (unspecified), Retransmit time 0 (unspecified) Prefix 2001::/64 onlink autoconfig Valid lifetime 2592000, preferred lifetime 604800show ipv6 rpf
To check Reverse Path Forwarding (RPF) information for a given unicast host address and prefix, use the show ipv6 rpf command in user EXEC or privileged EXEC mode.
Syntax Description
source-vrf
Name or address of the virtual routing and forwarding (VRF) on which lookups are to be performed.
receiver-vrf
Name or address of the VRF in which the lookups originate.
access-list
Name or address of access control list (ACL) to be applied to the group-based VRF selection policy.
vrf
Displays information about the VRF instance.
select
Displays group-to-VRF mapping information.
Command History
Release
Modification
12.0(26)S
This command was introduced.
12.3(4)T
This command was integrated into Cisco IOS Release 12.3(4)T.
12.2(25)S
This command was integrated into Cisco IOS Release 12.2(25)S.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series Routers.
15.1(4)M
The vrf receiver-vrf keyword and argument were added.
15.3(1)S
This command was integrated into Cisco IOS Release 15.3(1)S.
15.4(1)S
This command was implemented on the Cisco ASR 901 series routers.
Usage Guidelines
The show ipv6 rpfcommand displays information about how IPv6 multicast routing performs Reverse Path Forwarding (RPF). Because the router can find RPF information from multiple routing tables (for example, unicast Routing Information Base [RIB], multiprotocol Border Gateway Protocol [BGP] routing table, or static mroutes), the show ipv6 rpfcommand to display the source from which the information is retrieved.
Examples
The following example displays RPF information for the unicast host with the IPv6 address of 2001::1:1:2:
Router# show ipv6 rpf 2001::1:1:2 RPF information for 2001::1:1:2 RPF interface:Ethernet3/2 RPF neighbor:FE80::40:1:3 RPF route/mask:20::/64 RPF type:Unicast RPF recursion count:0 Metric preference:110 Metric:30The table below describes the significant fields shown in the display.
Table 12 show ipv6 rpf Field Descriptions Field
Description
RPF information for 2001::1:1:2
Source address that this information concerns.
RPF interface:Ethernet3/2
For the given source, the interface from which the router expects to get packets.
RPF neighbor:FE80::40:1:3
For the given source, the neighbor from which the router expects to get packets.
RPF route/mask:20::/64
Route number and mask that matched against this source.
RPF type:Unicast
Routing table from which this route was obtained, either unicast, multiprotocol BGP, or static mroutes.
RPF recursion count
Indicates the number of times the route is recursively resolved.
Metric preference:110
The preference value used for selecting the unicast routing metric to the Route Processor (RP) announced by the designated forwarder (DF).
Metric:30
Unicast routing metric to the RP announced by the DF.
show ipv6 snooping capture-policy
To display message capture policies, use the show ipv6 snooping capture-policy command in user EXEC or privileged EXEC mode.
Usage Guidelines
The show ipv6 snooping capture-policy command displays IPv6 first-hop message capture policies.
Examples
The following example shows show ipv6 snooping capture-policy command output on the Ethernet 0/0 interface, on which the IPv6 Neighbor Discovery Protocol (NDP) Inspection and Router Advertisement (RA) Guard features are configured:
Router# show ipv6 snooping capture-policy Hardware policy registered on Et0/0 Protocol Protocol value Message Value Action Feature ICMP 58 RS 85 punt RA Guard punt ND Inspection ICMP 58 RA 86 drop RA guard punt ND Inspection ICMP 58 NS 87 punt ND Inspection ICMP 58 NA 88 punt ND Inspection ICMP 58 REDIR 89 drop RA Guard punt ND InspectionThe table below describes the significant fields shown in the display.
Table 13 show ipv6 snooping capture-policy Field Descriptions Field
Description
Hardware policy registered on Fa4/11
A hardware policy contains a programmatic access list (ACL), with a list of access control entries (ACEs).
Protocol
The protocol whose packets are being inspected.
Message
The type of message being inspected.
Action
Action to be taken on the packet.
Feature
The inspection feature for this information.
show ipv6 snooping counters
To display information about the packets counted by the interface counter, use the show ipv6 snooping counterscommand in user EXEC or privileged EXEC mode.
Usage Guidelines
The show ipv6 snooping counters command displays packets handled by the switch that are being counted in interface counters. The switch counts packets captured per interface and records whether the packet was received, sent, or dropped. If a packet is dropped, the reason for the drop and the feature that caused the drop are both also provided.
Examples
The following examples shows information about packets counted on Fast Ethernet interface 4/12:
Router# show ipv6 snooping counters interface Fa4/12 Received messages on Fa4/12: Protocol Protocol message ICMPv6 RS RA NS NA REDIR CPS CPA 0 4256 0 0 0 0 0 Bridged messages from Fa4/12: Protocol Protocol message ICMPv6 RS RA NS NA REDIR CPS CPA 0 4240 0 0 0 0 0 Dropped messages on Fa4/12: Feature/Message RS RA NS NA REDIR CPS CPA RA guard 0 16 0 0 0 0 0 Dropped reasons on Fa4/12: RA guard 16 RA drop - reason:RA/REDIR received on un-authorized portThe table below describes the significant fields shown in the display.
Table 14 show ipv6 snooping counters Field Descriptions Field
Description
Received messages on:
The messages received on an interface.
Protocol
The protocol for which messages are being counted.
Protocol message
The type of protocol messages being counted.
Bridged messages from:
Bridged messages from the interface.
Dropped messages on:
The messages dropped on the interface.
Feature/message
The feature that caused the drop, and the type and number of messages dropped.
RA drop - reason:
The reason that these messages were dropped.
show ipv6 snooping features
To display information about about snooping features configured on the router, use the show ipv6 snooping features command in user EXEC or privileged EXEC mode.
Usage Guidelines
The show ipv6 snooping features command displays the first-hop features that are configured on the router.
show ipv6 snooping policies
To display information about the configured policies and the interfaces to which they are attached, use the show ipv6 snooping policies command in user EXEC or privileged EXEC mode.
Usage Guidelines
The show ipv6 snooping policies command displays all policies that are configured and lists the interfaces to which they are attached.
Examples
The following example shows information about all policies configured:
Device# show ipv6 snooping policies NDP inspection policies configured: Policy Interface Vlan ------ --------- ---- trusted Et0/0 all Et1/0 all untrusted Et2/0 all RA guard policies configured: Policy Interface Vlan ------ --------- ---- host Et0/0 all Et1/0 all router Et2/0 allThe table below describes the significant fields shown in the display.
show ipv6 source-guard policy
To display the IPv6 source-guard policy configuration, use the show ipv6 source-guard policy command in user EXEC or privileged EXEC mode.
Usage Guidelines
The show ipv6 source-guard policy command displays the IPv6 source-guard policy configuration, as well as all the interfaces on which the policy is applied. The command also displays IPv6 prefix guard information if the IPv6 prefix guard feature is enabled on the device.
show ipv6 spd
To display the IPv6 Selective Packet Discard (SPD) configuration, use the show ipv6 spdcommand in privileged EXEC mode.
Usage Guidelines
Use the show ipv6 spd command to display the SPD configuration, which may provide useful troubleshooting information.
show ipv6 static
To display the current contents of the IPv6 routing table, use the show ipv6 static command in user EXEC or privileged EXEC mode.
show ipv6 static [ ipv6-address | ipv6-prefix /prefix-length ] [ interface type number | recursive ] [detail]
Syntax Description
ipv6-address
(Optional) Provides routing information for a specific IPv6 address.
This argument must be in the form documented in RFC 2373 where the address is specified in hexadecimal using 16-bit values between colons.
ipv6-prefix
(Optional) Provides routing information for a specific IPv6 network.
This argument must be in the form documented in RFC 2373 where the address is specified in hexadecimal using 16-bit values between colons.
/prefix-length
(Optional) The length of the IPv6 prefix. A decimal value that indicates how many of the high-order contiguous bits of the address comprise the prefix (the network portion of the address). A slash mark must precede the decimal value.
interface
(Optional) Name of an interface.
type
(Optional, but required if the interface keyword is used) Interface type. For a list of supported interface types, use the question mark (?) online help function.
number
(Optional, but required if the interface keyword is used) Interface number. For specific numbering syntax for supported interface types, use the question mark (?) online help function.
recursive
(Optional) Allows the display of recursive static routes only.
detail
(Optional) Specifies the following additional information:
Command History
Release
Modification
12.3(4)T
This command was introduced.
12.2(25)S
This command was integrated into Cisco IOS Release 12.2(25)S.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(25)SG
This command was integrated into Cisco IOS Release 12.2(25)SG.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.1.0
This command was modified. It was integrated into Cisco IOS XE Release 2.1.0.
15.1(2)T
This command was modified. Support for IPv6 was added to Cisco IOS Release 15.1(2)T.
15.1(1)SG
This command was integrated into Cisco IOS Release 15.1(1)SG.
Usage Guidelines
The show ipv6 static command provides output similar to the show ip route command, except that it is IPv6-specific.
When the ipv6-address or ipv6-prefix/prefix-length argument is specified, a longest match lookup is performed from the routing table and only route information for that address or network is displayed. Only the information matching the criteria specified in the command syntax is displayed. For example, when the type number arguments are specified, only the specified interface-specific routes are displayed.
Examples
When no options specified in the command, those routes installed in the IPv6 Routing Information Base (RIB) are marked with an asterisk, as shown in the following example:
Router# show ipv6 static IPv6 Static routes Code: * - installed in RIB * 3000::/16, interface Ethernet1/0, distance 1 * 4000::/16, via nexthop 2001:1::1, distance 1 5000::/16, interface Ethernet3/0, distance 1 * 5555::/16, via nexthop 4000::1, distance 1 5555::/16, via nexthop 9999::1, distance 1 * 5555::/16, interface Ethernet2/0, distance 1 * 6000::/16, via nexthop 2007::1, interface Ethernet1/0, distance 1The table below describes the significant fields shown in the display.
Examples
When the ipv6-address or ipv6-prefix/prefix-length argument is specified, only information about static routes for that address or network is displayed. The following is sample output from the show ipv6 route command when entered with the IPv6 prefix 2001:200::/35:
Router# show ipv6 static 2001:200::/35 IPv6 Static routes Code: * - installed in RIB * 2001:200::/35, via nexthop 4000::1, distance 1 2001:200::/35, via nexthop 9999::1, distance 1 * 2001:200::/35, interface Ethernet2/0, distance 1Examples
When an interface is supplied, only those static routes with the specified interface as the outgoing interface are displayed. The interface keyword may be used with or without the IPv6 address and prefix specified in the command statement.
Router# show ipv6 static interface ethernet 3/0IPv6 Static routes Code: * - installed in RIB 5000::/16, interface Ethernet3/0, distance 1Examples
When the recursive keyword is specified, only recursive static routes are displayed:
Router# show ipv6 static recursiveIPv6 Static routes Code: * - installed in RIB * 4000::/16, via nexthop 2001:1::1, distance 1 * 5555::/16, via nexthop 4000::1, distance 1 5555::/16, via nexthop 9999::1, distance 1Examples
When the detail keyword is specified, the following additional information is displayed:
- For valid recursive routes, the output path set and maximum resolution depth.
- For invalid recursive routes, the reason why the route is not valid.
- For invalid direct or fully specified routes, the reason why the route is not valid.
Router# show ipv6 static detail IPv6 Static routes Code: * - installed in RIB * 3000::/16, interface Ethernet1/0, distance 1 * 4000::/16, via nexthop 2001:1::1, distance 1 Resolves to 1 paths (max depth 1) via Ethernet1/0 5000::/16, interface Ethernet3/0, distance 1 Interface is down * 5555::/16, via nexthop 4000::1, distance 1 Resolves to 1 paths (max depth 2) via Ethernet1/0 5555::/16, via nexthop 9999::1, distance 1 Route does not fully resolve * 5555::/16, interface Ethernet2/0, distance 1 * 6000::/16, via nexthop 2007::1, interface Ethernet1/0, distance 1Related Commands
Command
Description
ipv6 route
Establishes a static IPv6 route.
show ip route
Displays the current state of the routing table.
show ipv6 interface
Displays IPv6 interface information.
show ipv6 route summary
Displays the current contents of the IPv6 routing table in summary format.
show ipv6 tunnel
Displays IPv6 tunnel information.
show ipv6 traffic
To display statistics about IPv6 traffic, use the show ipv6 trafficcommand in user EXEC or privileged EXEC mode.
Syntax Description
interface
(Optional) All interfaces. IPv6 forwarding statistics for all interfaces on which IPv6 forwarding statistics are being kept will be displayed.
interface type number
(Optional) Specified interface. Interface statistics that have occurred since the statistics were last cleared on the specific interface are displayed.
Command History
Release
Modification
12.2(2)T
This command was introduced.
12.0(21)ST
This command was integrated into Cisco IOS Release 12.0(21)ST.
12.0(22)S
This command was integrated into Cisco IOS Release 12.0(22)S, and output fields were added.
12.2(13)T
The modification to add output fields was integrated into this release.
12.2(14)S
This command was integrated into Cisco IOS Release 12.2(14)S.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(25)SG
This command was integrated into Cisco IOS Release 12.2(25)SG.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
12.2(33)SRC
The interface argument and interface keyword were added.
12.2(33)SB
This command was integrated into Cisco IOS Release 12.2(33)SB.
Cisco IOS XE Release 2.1
This command was introduced on Cisco ASR 1000 Series devices.
15.2(2)SNG
This command was implemented on the Cisco ASR 901 Series Aggregation Services devices.
15.3(1)S
This command was integrated into Cisco IOS Release 15.3(1)S.
Cisco IOS XE Release 3.2SE
This command was integrated into Cisco IOS XE Release 3.2SE.
Usage Guidelines
The show ipv6 trafficcommand provides output similar to the show ip trafficcommand, except that it is IPv6-specific.
Examples
The following is sample output from the show ipv6 trafficcommand:
Device# show ipv6 traffic IPv6 statistics: Rcvd: 0 total, 0 local destination 0 source-routed, 0 truncated 0 format errors, 0 hop count exceeded 0 bad header, 0 unknown option, 0 bad source 0 unknown protocol, 0 not a device 0 fragments, 0 total reassembled 0 reassembly timeouts, 0 reassembly failures 0 unicast RPF drop, 0 suppressed RPF drop Sent: 0 generated, 0 forwarded 0 fragmented into 0 fragments, 0 failed 0 encapsulation failed, 0 no route, 0 too big Mcast: 0 received, 0 sent ICMP statistics: Rcvd: 0 input, 0 checksum errors, 0 too short 0 unknown info type, 0 unknown error type unreach: 0 routing, 0 admin, 0 neighbor, 0 address, 0 port parameter: 0 error, 0 header, 0 option 0 hopcount expired, 0 reassembly timeout,0 too big 0 echo request, 0 echo reply 0 group query, 0 group report, 0 group reduce 0 device solicit, 0 device advert, 0 redirectsThe following is sample output for the show ipv6 interface command without IPv6 CEF running:
Device# show ipv6 interface ethernet 0/1/1 Ethernet0/1/1 is up, line protocol is up IPv6 is enabled, link-local address is FE80::203:FDFF:FE49:9 Description: sat-2900a f0/12 Global unicast address(es): 7::7, subnet is 7::/32 Joined group address(es): FF02::1 FF02::2 FF02::1:FF00:7 FF02::1:FF49:9 MTU is 1500 bytes ICMP error messages limited to one every 100 milliseconds ICMP redirects are enabled Input features: RPF Unicast RPF access-list MINI Process Switching: 0 verification drops 0 suppressed verification drops ND DAD is enabled, number of DAD attempts: 1 ND reachable time is 30000 millisecondsThe following is sample output for the show ipv6 interface command with IPv6 CEF running:
Device# show ipv6 interface ethernet 0/1/1 Ethernet0/1/1 is up, line protocol is up IPv6 is enabled, link-local address is FE80::203:FDFF:FE49:9 Description: sat-2900a f0/12 Global unicast address(es): 7::7, subnet is 7::/32 Joined group address(es): FF02::1 FF02::2 FF02::1:FF00:7 FF02::1:FF49:9 MTU is 1500 bytes ICMP error messages limited to one every 100 milliseconds ICMP redirects are enabled Input features: RPF Unicast RPF access-list MINI Process Switching: 0 verification drops 0 suppressed verification drops CEF Switching: 0 verification drops 0 suppressed verification drops ND DAD is enabled, number of DAD attempts: 1 ND reachable time is 30000 milliseconds ND advertised reachable time is 0 milliseconds ND advertised retransmit interval is 0 milliseconds ND router advertisements are sent every 200 seconds ND router advertisements live for 1800 seconds Hosts use stateless autoconfig for addresses.The table below describes the significant fields shown in the display.
Table 19 show ipv6 traffic Field Descriptions Field
Description
source-routed
Number of source-routed packets.
truncated
Number of truncated packets.
format errors
Errors that can result from checks performed on header fields, the version number, and packet length.
not a device
Message sent when IPv6 unicast routing is not enabled.
0 unicast RPF drop, 0 suppressed RPF drop
Number of unicast and suppressed reverse path forwarding (RPF) drops.
failed
Number of failed fragment transmissions.
encapsulation failed
Failure that can result from an unresolved address or try-and-queue packet.
no route
Counted when the software discards a datagram it did not know how to route.
unreach
Unreachable messages received are as follows:
- routing--Indicates no route to the destination.
- admin--Indicates that communication with the destination is administratively prohibited.
- neighbor--Indicates that the destination is beyond the scope of the source address. For example, the source may be a local site or the destination may not have a route back to the source.
- address--Indicates that the address is unreachable.
- port--Indicates that the port is unreachable.
Unicast RPF access-list MINI
Unicast RPF access-list in use.
Process Switching
Displays process RPF counts, such as verification and suppressed verification drops.
CEF Switching
Displays CEF switching counts, such as verification drops and suppressed verification drops.
show ipv6 tunnel
To display IPv6 tunnel information, use the show ipv6 tunnelcommand in user EXEC or privileged EXEC mode.
Command History
Release
Modification
12.2(2)T
This command was introduced.
12.0(21)ST
This command was integrated into Cisco IOS Release 12.0(21)ST.
12.0(22)S
This command was integrated into Cisco IOS Release 12.0(22)S.
12.2(14)S
This command was integrated into Cisco IOS Release 12.2(14)S.
Command History
Usage Guidelines
For each tunnel running IPv6, use the show ipv6 tunnel command to display the tunnel unit number, the name of the dynamic routing protocol used by the tunnel, the time of last input, the number of packets in the last input, and the description string as set by the description command.
Examples
The following is sample output from the show ipv6 tunnelcommand:
Router# show ipv6 tunnel Tun Route LastInp Packets 0 RIPng never 0 1 - 00:00:13 55495 2 - never 0 3 - 00:00:21 14755 4 - never 0 5 - 00:00:00 15840 6 - never 0 7 - 00:00:18 16008 8 - never 0 9 - never 0 10 - never 0 11 - 00:00:03 94801 12 - 1d02h 2 13 - never 0 14 - 00:00:08 312190 15 - never 0 16 - never 0 17 - never 0 18 - 00:00:05 1034954 19 - never 0 20 - 00:00:01 1171114 21 - never 0The table below describes the significant fields shown in the display.
Table 20 show ipv6 tunnel Field Descriptions Field
Description
Tun
Tunnel number.
Route
Indicates whether IPv6 RIP is enabled (RIPng) on this tunnel interface or is not enabled (-).
Last Inp
Time of last input into the tunnel.
Packets
Number of packets in this tunnel.
Description (not shown in sample output)
Description of the tunnel as entered in interface configuration mode.
show ipv6 virtual-reassembly
To display Virtual Fragment Reassembly (VFR) configuration and statistical information on a specific interface, use the show ipv6 virtual-reassembly command in privileged EXEC mode.
Usage Guidelines
This command shows the configuration and statistical information of VFR on the given interface.
Examples
The following example shows a typical display produced by this command:
Router# show ipv6 virtual-reassembly All enabled IPv6 interfaces... GigabitEthernet0/0/0: IPv6 Virtual Fragment Reassembly (IPV6VFR) is ENABLED [in] IPv6 configured concurrent reassemblies (max-reassemblies): 64 IPv6 configured fragments per reassembly (max-fragments): 16 IPv6 configured reassembly timeout (timeout): 3 seconds IPv6 configured drop fragments: OFF IPv6 current reassembly count:0 IPv6 current fragment count:0 IPv6 total reassembly count:20 IPv6 total reassembly timeout count:0The display is self-explanatory; it corresponds to the values used when you entered the ipv6 virtual-reassembly command.
show ipv6 virtual-reassembly features
To display Virtual Fragment Reassembly (VFR) information on all interfaces or on a specified interface, use the show ipv6 virtual-reassembly features command in privileged EXEC mode.
Usage Guidelines
This command shows the configuration and statistical information of VFR on a specified interface or on all interfaces. Use the optional interface interface-type keyword and argument to specify an interface. If you enter the show ipv6 virtual-reassembly features command without the keyword and argument, information about all interfaces is displayed.
Examples
The following example displays information about all interfaces:
Router# show ipv6 virtual-reassembly features GigabitEthernet0/0/0: IPV6 Virtual Fragment Reassembly (IPV6 VFR) Current Status is ENABLED [in] Features to use if IPV6 VFR is Enabled:CLI GigabitEthernet0/0/0: IPV6 Virtual Fragment Reassembly (IPV6 VFR) Current Status is ENABLED [out] Features to use if IPV6 VFR is Enabled:CLIThe display is self-explanatory; it corresponds to the values used when you entered the ipv6 virtual-reassembly command.
show ipv6 wccp
To display the IPv6 Web Cache Communication Protocol (WCCP) global configuration and statistics, use the show ipv6 wccp command in user EXEC or privileged EXEC mode.
show ipv6 wccp [ [all] [capabilities] [summary] [ interfaces [ cef | counts | detail ] ] [ vrf vrf-name ] [ { web-cache | service-number } [ [assignment] [clients] [counters] [detail] [service] [view] ] ] ]Syntax Description
summary
(Optional) Displays a summary of WCCP services.
capabilities
(Optional) Displays WCCP platform capabilities information.
vrf vrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) instance associated with a service group to display.
service-number
(Optional) Identification number of the web cache service group being controlled by the cache. The number can be from 0 to 254. For web caches using Cisco cache engines, the reverse proxy service is indicated by a value of 99.
interfaces
(Optional) Displays WCCP redirect interfaces.
cef
(Optional) Displays Cisco Express Forwarding interface statistics, including the number of input, output, dynamic, static, and multicast services.
counts
(Optional) Displays WCCP interface count statistics, including the number of Cisco Express Forwarding and process-switched output and input packets redirected.
detail
(Optional) Displays WCCP interface configuration statistics, including the number of input, output, dynamic, static, and multicast services.
web-cache
(Optional) Displays statistics for the web cache service.
all
(Optional) Displays statistics for all known services.
assignment
(Optional) Displays service group assignment information.
service
(Optional) Displays detailed information about a service, including the service definition and all other per-service information.
clients
(Optional) Displays detailed information about the clients of a service, including all per-client information. No per-service information is displayed.
detail
(Optional) Displays detailed information about the clients of a service, including all per-client information. No per-service information is displayed. Assignment information is also displayed.
counters
(Optional) Displays traffic counters.
Usage Guidelines
Use the clear ipv6 wccp command to reset all WCCP counters.
Use the show ipv6 wccp service-number detail command to display information about the WCCP client timeout interval and the redirect assignment timeout interval if those intervals are not set to their default value of 10 seconds.
Use the show ipv6 wccp summary command to show the configured WCCP services and a summary of their current state.
Examples
This section contains examples and field descriptions for the following forms of this command:
- show ipv6 wccp service-number (service mode displayed)
- show ipv6 wccp service-number detail
- show ipv6 wccp interfaces
- show ipv6 wccp web-cache
- show ipv6 wccp web-cache counters
- show ipv6 wccp web-cache detail
- show ipv6 wccp web-cache detail (bypass counters displayed)
- show ipv6 wccp web-cache service
- show ipv6 wccp summary
Examples
The following is sample output from the show ipv6 wccp service-number command:
Router# show ipv6 wccp 61 Global WCCP information: Router information: Router Identifier: 2001:DB8:100::1 Service Identifier: 61 Protocol Version: 2.01 Number of Service Group Clients: 2 Number of Service Group Routers: 1 Total Packets Redirected: 0 Process: 0 CEF: 0 Service mode: Open Service Access-list: -none- Total Packets Dropped Closed: 0 Redirect access-list: -none- Total Packets Denied Redirect: 0 Total Packets Unassigned: 0 Group access-list: -none- Total Messages Denied to Group: 0 Total Authentication failures: 0 Total GRE Bypassed Packets Received: 0 Process: 0 CEF: 0The table below describes the significant fields shown in the display.
Table 21 show ipv6 wccp service-number Field Descriptions Field
Description
Router information
A list of routers detected by the current router.
Protocol Version
The version of WCCP being used by the router in the service group.
Service Identifier
Indicates which service is detailed.
Number of Service Group Clients
The number of clients that are visible to the router and other clients in the service group.
Number of Service Group Routers
The number of routers in the service group.
Total Packets s/w Redirected
Total number of packets redirected by the router.
Service mode
Identifies the WCCP service mode. Options are Open or Closed.
Service Access-list
A named extended IP access list that defines the packets that will match the service.
Total Packets Dropped Closed
Total number of packets that were dropped when WCCP is configured for closed services and an intermediary device is not available to process the service.
Redirect Access-list
The name or number of the access list that determines which packets will be redirected.
Total Packets Denied Redirect
Total number of packets that were not redirected because they did not match the access list.
Total Packets Unassigned
Number of packets that were not redirected because they were not assigned to any cache engine. Packets may not be assigned during initial discovery of cache engines or when a cache is dropped from a cluster.
Group Access-list
Indicates which cache engine is allowed to connect to the router.
Total Messages Denied to Group
Indicates the number of packets denied by the group-list access list.
Total Authentication failures
The number of instances where a password did not match.
Total Bypassed Packets Received
The number of packets that have been bypassed. Process and Cisco Express Forwarding are switching paths within Cisco IOS software.
Examples
The following example displays WCCP client information and WCCP router statistics that include the type of services:
Router# show ipv6 wccp 61 detail WCCP Client information: WCCP Client ID: 2001:DB8:1::11 Protocol Version: 2.01 State: Usable Redirection: L2 Packet Return: L2 Assignment: MASK Connect Time: 1w0d Redirected Packets: Process: 0 CEF: 0 GRE Bypassed Packets: Process: 0 CEF: 0 Mask Allotment: 32 of 64 (50.00%) Assigned masks/values: 1/32 Mask SrcAddr DstAddr SrcPort DstPort ---- ------- ------- ------- ------- 0000: ::3 ::F 0x0000 0x0000 Value SrcAddr DstAddr SrcPort DstPort ----- ------- ------- ------- ------- 0000: :: :: 0x0000 0x0000 0001: :: ::2 0x0000 0x0000 0002: :: ::4 0x0000 0x0000 0003: :: ::6 0x0000 0x0000 0004: :: ::8 0x0000 0x0000 0005: :: ::A 0x0000 0x0000 0006: :: ::C 0x0000 0x0000 0007: :: ::E 0x0000 0x0000 0008: ::1 :: 0x0000 0x0000 0009: ::1 ::2 0x0000 0x0000 0010: ::1 ::4 0x0000 0x0000 0011: ::1 ::6 0x0000 0x0000 0012: ::1 ::8 0x0000 0x0000 0013: ::1 ::A 0x0000 0x0000 0014: ::1 ::C 0x0000 0x0000 0015: ::1 ::E 0x0000 0x0000 0016: ::2 :: 0x0000 0x0000 0017: ::2 ::2 0x0000 0x0000 0018: ::2 ::4 0x0000 0x0000 0019: ::2 ::6 0x0000 0x0000 0020: ::2 ::8 0x0000 0x0000 0021: ::2 ::A 0x0000 0x0000 0022: ::2 ::C 0x0000 0x0000 0023: ::2 ::E 0x0000 0x0000 0024: ::3 :: 0x0000 0x0000 0025: ::3 ::2 0x0000 0x0000 0026: ::3 ::4 0x0000 0x0000 0027: ::3 ::6 0x0000 0x0000 0028: ::3 ::8 0x0000 0x0000 0029: ::3 ::A 0x0000 0x0000 0030: ::3 ::C 0x0000 0x0000 0031: ::3 ::E 0x0000 0x0000 WCCP Client ID: 2001:DB8:1::12 Protocol Version: 2.01 State: Usable Redirection: L2 Packet Return: L2 Assignment: MASK Connect Time: 1w0d Redirected Packets: Process: 0 CEF: 0 GRE Bypassed Packets: Process: 0 CEF: 0 Mask Allotment: 32 of 64 (50.00%) Assigned masks/values: 1/32 Mask SrcAddr DstAddr SrcPort DstPort ---- ------- ------- ------- ------- 0000: ::3 ::F 0x0000 0x0000 Value SrcAddr DstAddr SrcPort DstPort ----- ------- ------- ------- ------- 0000: :: ::1 0x0000 0x0000 0001: :: ::3 0x0000 0x0000 0002: :: ::5 0x0000 0x0000 0003: :: ::7 0x0000 0x0000 0004: :: ::9 0x0000 0x0000 0005: :: ::B 0x0000 0x0000 0006: :: ::D 0x0000 0x0000 0007: :: ::F 0x0000 0x0000 0008: ::1 ::1 0x0000 0x0000 0009: ::1 ::3 0x0000 0x0000 0010: ::1 ::5 0x0000 0x0000 0011: ::1 ::7 0x0000 0x0000 0012: ::1 ::9 0x0000 0x0000 0013: ::1 ::B 0x0000 0x0000 0014: ::1 ::D 0x0000 0x0000 0015: ::1 ::F 0x0000 0x0000 0016: ::2 ::1 0x0000 0x0000 0017: ::2 ::3 0x0000 0x0000 0018: ::2 ::5 0x0000 0x0000 0019: ::2 ::7 0x0000 0x0000 0020: ::2 ::9 0x0000 0x0000 0021: ::2 ::B 0x0000 0x0000 0022: ::2 ::D 0x0000 0x0000 0023: ::2 ::F 0x0000 0x0000 0024: ::3 ::1 0x0000 0x0000 0025: ::3 ::3 0x0000 0x0000 0026: ::3 ::5 0x0000 0x0000 0027: ::3 ::7 0x0000 0x0000 0028: ::3 ::9 0x0000 0x0000 0029: ::3 ::B 0x0000 0x0000 0030: ::3 ::D 0x0000 0x0000 0031: ::3 ::F 0x0000 0x0000
Table 22 show ipv6 wccp service-number detail Field Descriptions Field
Description
Protocol Version
The version of WCCP being used by the router in the service group.
State
Indicates whether the WCCP client is operating properly and can be contacted by a router and other clients in the service group.
When a WCCP client has an incompatible message interval setting, the state of the client is shown as "NOT Usable," followed by a status message describing the reason why the client is not usable.
Redirection
Indicates the redirection method used. WCCP uses GRE or L2 to redirect IP traffic.
Assignment
Indicates the load-balancing method used. WCCP uses HASH or MASK assignment.
Message Interval
The fixed time interval (in seconds)between successive keepalive messages sent from a WCCCP client to a WCCP router. The default time interval is 10 seconds. If the default time interval is configured, the "Message Interval" field is not displayed.
Client timeout
The time (in seconds) that must pass without a WCCP router receiving a keepalive message from a client before the WCCP router considers that client unreachable and removes it from the service group.
Assignment timeout
The time (in seconds) that must pass after the WCCP router detects a failed client and begins to redirect traffic.
Packets Redirected
The number of packets that have been redirected to the content engine.
Connect Time
The amount of time (in hours, minutes, and seconds) the client has been connected to the router.
Examples
The following is sample output from the show ipv6 wccp interfaces command:
Router# show ipv6 wccp interfaces WCCP interface configuration: FastEthernet0/1/0 Output services: 2 Input services: 3 Mcast services: 1 Exclude In: FALSEThe table below describes the significant fields shown in the display.
Table 23 show ipv6 wccp interfaces Field Descriptions Field
Description
Output services
Indicates the number of output services configured on the interface.
Input services
Indicates the number of input services configured on the interface.
Mcast services
Indicates the number of multicast services configured on the interface.
Exclude In
Displays whether traffic on the interface is excluded from redirection.
Examples
The following is sample output from the show ipv6 wccp web-cache command:
Router# show ipv6 wccp web-cache Global WCCP information: Router information: Router Identifier: 2001:DB8:100::1 Service Identifier: web-cache Protocol Version: 2.01 Number of Service Group Clients: 2 Number of Service Group Routers: 1 Total Packets Redirected: 0 Process: 0 CEF: 0 Service mode: Open Service Access-list: -none- Total Packets Dropped Closed: 0 Redirect access-list: -none- Total Packets Denied Redirect: 0 Total Packets Unassigned: 0 Group access-list: -none- Total Messages Denied to Group: 0 Total Authentication failures: 0 Total GRE Bypassed Packets Received: 0 Process: 0 CEF: 0 GRE tunnel interface: Tunnel1The table below describes the significant fields shown in the display.
Table 24 show ipv6 wccp web-cache Field Descriptions Field
Description
Protocol Version
The version of WCCP that is being used by the cache engine in the service group.
Service Identifier
Indicates which service is detailed.
Number of Service Group Clients
Number of clients using the router as their home router.
Number of Service Group Routers
The number of routers in the service group.
Total Packets Redirected
Total number of packets redirected by the router.
Service mode
Indicates whether WCCP open or closed mode is configured.
Service Access-list
The name or number of the service access list that determines which packets will be redirected.
Redirect access-list
The name or number of the access list that determines which packets will be redirected.
Total Packets Denied Redirect
Total number of packets that were not redirected because they did not match the access list.
Total Packets Unassigned
Number of packets that were not redirected because they were not assigned to any cache engine. Packets may not be assigned during initial discovery of cache engines or when a cache is dropped from a cluster.
Group access-list
Indicates which cache engine is allowed to connect to the router.
Total Messages Denied to Group
Indicates the number of packets denied by the group-list access list.
Total Authentication failures
The number of instances where a password did not match.
Examples
The following example displays web cache engine information and WCCP traffic counters:
Router# show ipv6 wccp web-cache counters WCCP Service Group Counters: Redirected Packets: Process: 0 CEF: 0 Non-Redirected Packets: Action - Forward: Reason - no assignment: Process: 0 CEF: 0 Action - Ignore (forward): Reason - redir ACL check: Process: 0 CEF: 0 Action - Discard: Reason - closed services: Process: 0 CEF: 0 GRE Bypassed Packets: Process: 0 CEF: 0 GRE Bypassed Packet Errors: Total Errors: Process: 0 CEF: 0 WCCP Client Counters: WCCP Client ID: 2001:DB8:1::11 Redirect Assignments: Received: 1 Invalid: 0 Duplicate: 0 Redirected Packets: Process: 0 CEF: 0 GRE Bypassed Packets: Process: 0 CEF: 0 WCCP Client ID: 2001:DB8:1::12 Redirected Packets: Process: 0 CEF: 0 GRE Bypassed Packets: Process: 0 CEF: 0The table below describes the significant fields shown in the display.
Examples
The following example displays web cache engine information and WCCP router statistics for the web cache service:
Router# show ipv6 wccp web-cache detail WCCP Client information: WCCP Client ID: 2001:DB8:1::11 Protocol Version: 2.01 State: Usable Redirection: GRE Packet Return: GRE Assignment: HASH Connect Time: 1w0d Redirected Packets: Process: 0 CEF: 0 GRE Bypassed Packets: Process: 0 CEF: 0 Hash Allotment: 128 of 256 (50.00%) Initial Hash Info: 00000000000000000000000000000000 00000000000000000000000000000000 Assigned Hash Info: 55555555555555555555555555555555 55555555555555555555555555555555 WCCP Client ID: 2001:DB8:1::12 Protocol Version: 2.01 State: Usable Redirection: GRE Packet Return: GRE Assignment: HASH Connect Time: 1w0d Redirected Packets: Process: 0 CEF: 0 GRE Bypassed Packets: Process: 0 CEF: 0 Hash Allotment: 128 of 256 (50.00%) Initial Hash Info: 00000000000000000000000000000000 00000000000000000000000000000000 Assigned Hash Info: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAThe table below describes the significant fields shown in the display.
Table 26 show ipv6 wccp web-cache detail Field Descriptions Field
Description
WCCP Client Information
The header for the area that contains fields for information on clients.
IP Address
The IP address of the cache engine in the service group.
Protocol Version
The version of WCCP being used by the cache engine in the service group.
State
Indicates whether the cache engine is operating properly and can be contacted by a router and other cache engines in the service group.
Redirected Packets
The number of packets that have been redirected to the cache engine.
Connect Time
The amount of time (in hours, minutes, and seconds) the cache engine has been connected to the router.
Examples
The following example displays web cache engine information and WCCP router statistics that include the bypass counters:
Router# show ipv6 wccp web-cache detail WCCP Client information: WCCP Client ID: 2001:DB8:1::11 Protocol Version: 2.01 State: Usable Redirection: GRE Packet Return: GRE Assignment: HASH Connect Time: 1w0d Redirected Packets: Process: 0 CEF: 0 GRE Bypassed Packets: Process: 0 CEF: 0 Hash Allotment: 128 of 256 (50.00%) Initial Hash Info: 00000000000000000000000000000000 00000000000000000000000000000000 Assigned Hash Info: 55555555555555555555555555555555 55555555555555555555555555555555 WCCP Client ID: 2001:DB8:1::12 Protocol Version: 2.01 State: Usable Redirection: GRE Packet Return: GRE Assignment: HASH Connect Time: 1w0d Redirected Packets: Process: 0 CEF: 0 GRE Bypassed Packets: Process: 0 CEF: 0 Hash Allotment: 128 of 256 (50.00%) Initial Hash Info: 00000000000000000000000000000000 00000000000000000000000000000000 Assigned Hash Info: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAThe table below describes the significant fields shown in the display.
Table 27 show ipv6 wccp web-cache detail Field Descriptions Field
Description
WCCP Router information
The header for the area that contains fields for the IP address and the version of WCCP associated with the router connected to the cache engine in the service group.
IP Address
The IP address of the router connected to the cache engine in the service group.
Protocol Version
The version of WCCP that is being used by the cache engine in the service group.
WCCP Client Information
The header for the area that contains fields for information on clients.
IP Address
The IP address of the cache engine in the service group.
Protocol Version
The version of WCCP that is being used by the cache engine in the service group.
State
Indicates whether the cache engine is operating properly and can be contacted by a router and other cache engines in the service group.
Initial Hash Info
The initial state of the hash bucket assignment.
Assigned Hash Info
The current state of the hash bucket assignment.
Hash Allotment
The percent of buckets assigned to the current cache engine. Both a value and a percent figure are displayed.
Packets Redirected
The number of packets that have been redirected to the cache engine.
Connect Time
The amount of time (in hours, minutes, and seconds) the cache engine has been connected to the router.
Bypassed Packets
The number of packets that have been bypassed. Process and Cisco Express Forwarding are switching paths within Cisco IOS software.
Examples
The following example displays information about a service, including the service definition and all other per-service information:
Router# show ipv6 wccp web-cache service WCCP service information definition: Type: Standard Id: 0 Priority: 240 Protocol: 6 Options: 0x00000512 -------- Mask/Value sets: 1 Value elements: 4 Dst Ports: 80 0 0 0 0 0 0 0Examples
The following example displays information on the configured WCCP services and a summary of their current state:
Router# show ipv6 wccp summary WCCP version 2 enabled, 2 services Service Clients Routers Assign Redirect Bypass ------- ------- ------- ------ -------- ------ Default routing table (Router Id: 2001:DB8:100::1): web-cache 2 1 HASH GRE GRE 61 2 1 MASK L2 L2 62 2 1 MASK L2 L2The table below describes the significant fields shown in the display.
Table 28 show ipv6 wccp summary Field Descriptions Field
Description
Service
Indicates which service is detailed.
Clients
Indicates the number of cache engines participating in the WCCP service.
Routers
Indicates the number of routers participating in the WCCP service.
Assign
Indicates the load-balancing method used. WCCP uses HASH or MASK assignment.
Redirect
Indicates the redirection method used. WCCP uses GRE or L2 to redirect IP traffic.
Bypass
Indicates the bypass method used. WCCP uses GRE or L2 to return packets to the router.
Related Commands
Command
Description
clear ipv6 wccp
Clears the counter for packets redirected using WCCP.
ipv6 wccp
Enables support of the WCCP service for participation in a service group.
ipv6 wccp redirect
Enables packet redirection on an outbound or inbound interface using WCCP.
show ipv6 interface
Lists a summary of the IP information and status of an interface.
show ipv6 wccp global counters
Displays global WCCP information for packets that are processed in software.
show ipv6 wccp global counters
To display IPv6 global Web Cache Communication Protocol (WCCP) information for packets that are processed in software, use the show ipv6 wccp global counters command in user EXEC or privileged EXEC mode.
Usage Guidelines
The show ipv6 wccp globalcounters command displays counters for packets that are processed in software.
Examples
The following example displays global WCCP information for packets that are processed in the software:
Router# show ipv6 wccp global counters WCCP Global Counters: Packets Seen by WCCP Process: 8 CEF (In): 14 CEF (Out): 0Related Commands
Command
Description
clear ipv6 wccp
Clears the counters for packets redirected using WCCP.
ipv6 wccp
Enables support of the WCCP service for participation in a service group.
ipv6 wccp redirect
Enables packet redirection on an outbound or inbound interface using WCCP.
show ipv6 interface
Lists a summary of the IP information and the status of an interface.
show ipv6 wccp
Displays the WCCP global configuration and statistics.
show isis ipv6 rib
To display the Intermediate System-to-Intermediate System (IS-IS) IPv6 local routing information base (RIB), use the show isis ipv6 rib command in user EXEC or privileged EXEC mode.
Command History
Release
Modification
12.3(4)T
This command was introduced.
12.2(25)S
This command was integrated into Cisco IOS Release 12.2(25)S.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(25)SG
This command was integrated into Cisco IOS Release 12.2(25)SG.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(33)SXH
This command was integrated into Cisco IOS Release 12.2(33)SXH.
Cisco IOS XE Release 2.6
This command was introduced on Cisco ASR 1000 Series devices.
15.2(2)SNG
This command was implemented on the Cisco ASR 901 Series Aggregation Services devices.
15.3(3)M
This command was modified. Filtered routes are now represented by a hyphen (-).
Usage Guidelines
When the optional ipv6-prefix argument is not used, the complete Intermediate System-to-Intermediate System (IS-IS) IPv6 RIB is displayed. When an optional IPv6 prefix is supplied, only the entry matching that prefix is displayed.
Only the optimal paths will be installed in the master IPv6 RIB as IS-IS routes.
Examples
The following is sample output from the show isis ipv6 rib command. An asterisk (*) indicates prefixes that have been installed and a hyphen (-) indicates prefixes that have been filtered out in the master IPv6 RIB as IS-IS routes. Following each prefix is a list of all paths in order of preference, with optimal paths listed first and suboptimal paths listed after optimal paths.
Device# show isis ipv6 rib IS-IS IPv6 process , local RIB 11::1/128 via FE80::A8BB:CCFF:FE00:C800/Ethernet0/0, type L2 metric 20 tag 0 LSP [3/3] 20::/64 via FE80::A8BB:CCFF:FE00:C800/Ethernet0/0, type L1 metric 20 tag 0 LSP [4/2] via FE80::A8BB:CCFF:FE00:C800/Ethernet0/0, type L2 metric 20 tag 0 LSP [3/3] * 22::2/128 via FE80::A8BB:CCFF:FE00:C800/Ethernet0/0, type L1 metric 20 tag 0 LSP [4/2] - via FE80::A8BB:CCFF:FE00:C800/Ethernet0/0, type L2 metric 20 tag 0 LSP [3/3] - 2001:DB8::/64 via FE80::A8BB:CCFF:FE00:C800/Ethernet0/0, type L1 metric 20 tag 0 LSP [4/2] via FE80::A8BB:CCFF:FE00:C800/Ethernet0/0, type L2 metric 20 tag 0 LSP [3/3]The table below describes the significant fields shown in the display.
Table 30 show isis ipv6 rib Field Descriptions Field
Description
11::1/128
IPv6 prefix that is stored within the IS-IS local RIB.
via FE80::A8BB:CCFF:FE00:C800/Ethernet0/0
IPv6 address of the next hop—in this instance, Ethernet0/0.
type
Type of path:
tag
Priority of the IPv6 prefix. All prefixes have a tag 0 priority unless otherwise configured.
LSP [3/3]
Link-state packet (LSP). The numbers following LSP indicate the LSP index and LSP version, respectively.
*
Prefixes that have been installed in the master IPv6 RIB as IS-IS routes.
-
Route paths that are filtered out.
show monitor event-trace vpn-mapper
show ospfv3 border-routers
To display the internal Open Shortest Path First version 3 (OSPFv3) routing table entries to an Area Border Router (ABR) and Autonomous System Boundary Router (ASBR), use the show ospfv3 border-routers command in privileged EXEC mode.
Syntax Description
process-id
(Optional) Internal identification. The number used here is the number assigned administratively when enabling the OSPFv3 routing process and can be a value from 1 through 65535.
address-family
(Optional) Enter ipv6 for the IPv6 address family or ipv4 for the IPv4 address family.
vrf
(Optional) VPN Routing/Forwarding instance.
{vrf-name | *}
The virtual routing and forwarding table for which the information should be displayed. If this parameter is not specified, only information for the global routing table is shown. A VRF name of "*" displays information for all VRFs, including the global table.
Command History
Release
Modification
15.1(3)S
This command was introduced.
Cisco IOS XE Release 3.4S
This command was integrated into Cisco IOS XE Release 3.4S.
15.2(1)T
This command was integrated into Cisco IOS Release 15.2(1)T.
Cisco IOS Release 15.2(4)S
This command was integrated into Cisco IOS Release 15.2(4)S.
Cisco IOS Release 15.2(4)M
This command was integrated into Cisco IOS Release 15.2(4)M.
15.1(1)SY
This command was integrated into Cisco IOS Release 15.1(1)SY.
show ospfv3 database
To display lists of information related to the Open Shortest Path First version 3 (OSPFv3) database for a specific router, use the show ospfv3 database command in user EXEC or privileged EXEC mode. The various forms of this command deliver information about different OSPFv3 link-state advertisements (LSAs).
{ show ospfv3 [ process-id [area-id] ] [address-family] [ vrf { vrf-name | * } ] database [ database-summary | internal | external [ipv6-prefix] [link-state-id] ] | grace | inter-area prefix [ ipv6-prefix | link-state-id ] | inter-area router [ destination-router-id | link-state-id ] | link [ interface interface-name | link-state-id ] | network [link-state-id] | nssa-external [ipv6-prefix] [link-state-id] | prefix [ ref-lsa { router | network } | link-state-id ] | promiscuous | router [link-state-id] | unknown [ { area | as | link } [link-state-id] ] [ adv-router router-id ] [self-originate] }
Syntax Description
process-id
(Optional) Internal identification. The number used here is the number assigned administratively when enabling the OSPFv3 routing process and can be a value from 1 through 65535.
area-id
(Optional) Displays information only about a specified area. The area-id argument can only be used if the process-id argument is specified.
address-family
(Optional) Enter ipv6 for the IPv6 address family or ipv4 for the IPv4 address family.
vrf
(Optional) VPN Routing/Forwarding instance.
{vrf-name | *}
The virtual routing and forwarding table for which the information should be displayed. If this parameter is not specified, only information for the global routing table is shown. A vrf name of "*" displays information for all vrfs, including the global table.
database-summary
(Optional) Displays how many of each type of LSAs exist for each area in the database, and the total.
internal
(Optional) Internal LSA information.
external
(Optional) Displays information only about the external LSAs.
ipv6-prefix
(Optional) Link-local IPv6 address of the neighbor. This argument must be in the form documented in RFC 2373 where the address is specified in hexadecimal using 16-bit values between colons.
grace
(Optional) Displays information about OSPFv3 graceful restart.
link-state-id
(Optional) An integer used to differentiate LSAs. In network and link LSAs, the link-state ID matches the interface index.
inter-area prefix
(Optional) Displays information only about LSAs based on inter-area prefix LSAs.
inter-area router
(Optional) Displays information only about LSAs based on inter-area router LSAs.
destination-router-id
(Optional) The specified destination router ID.
link
(Optional) Displays information about the link LSAs.
interface
(Optional) Displays information about the LSAs filtered by interface context.
interface-name
(Optional) Specifies the LSA interface.
network
(Optional) Displays information only about the network LSAs.
nssa-external
(Optional) Displays information only about the not so stubby area (NSSA) external LSAs.
prefix
(Optional) Displays information on the intra-area-prefix LSAs.
promiscuous
(Optional) Displays temporary LSAs in a Mobile Ad Hoc Network (MANET).
ref-lsa {router | network}
(Optional) Further filters the prefix LSA type.
router
(Optional) Displays information only about the router LSAs.
unknown
(Optional) Displays all LSAs with unknown types.
area
(Optional) Filters unknown area LSAs.
as
(Optional) Filters unknown autonomous system (AS) LSAs.
link
(Optional) When following the unknown keyword, the link keyword filters link-scope LSAs.
adv-router router-id
(Optional) Displays all the LSAs of the advertising router. This argument must be in the form documented in RFC 2740 where the address is specified in hexadecimal using 16-bit values between colons.
self-originate
(Optional) Displays only self-originated LSAs (from the local router).
Command History
Release
Modification
15.1(3)S
This command was introduced.
Cisco IOS XE Release 3.4S
This command was integrated into Cisco IOS XE Release 3.4S.
15.2(1)T
This command was integrated into Cisco IOS Release 15.2(1)T.
15.2(4)S
This command was integrated into Cisco IOS Release 15.2(4)S.
15.2(4)M
This command was integrated into Cisco IOS Release 15.2(4)M.
15.1(1)SY
This command was integrated into Cisco IOS Release 15.1(1)SY.
Usage Guidelines
The adv-router keyword requires a router ID. The self-originate keyword displays only those LSAs that originated from the local router. Both of these keywords can be appended to all other keywords used with the show ospfv3 databasedatabase command to provide more detailed information.
Examples
The following is sample output from the show ospfv3 database command when no arguments or keywords are used:
Router# show ospfv3 database OSPFv3 Router with ID (172.16.4.4) (Process ID 1) Router Link States (Area 0) ADV Router Age Seq# Fragment ID Link count Bits 172.16.4.4 239 0x80000003 0 1 B 172.16.6.6 239 0x80000003 0 1 B Inter Area Prefix Link States (Area 0) ADV Router Age Seq# Prefix 172.16.4.4 249 0x80000001 FEC0:3344::/32 172.16.4.4 219 0x80000001 FEC0:3366::/32 172.16.6.6 247 0x80000001 FEC0:3366::/32 172.16.6.6 193 0x80000001 FEC0:3344::/32 172.16.6.6 82 0x80000001 FEC0::/32 Inter Area Router Link States (Area 0) ADV Router Age Seq# Link ID Dest RtrID 172.16.4.4 219 0x80000001 50529027 172.16.3.3 172.16.6.6 193 0x80000001 50529027 172.16.3.3 Link (Type-8) Link States (Area 0) ADV Router Age Seq# Link ID Interface 172.16.4.4 242 0x80000002 14 PO4/0 172.16.6.6 252 0x80000002 14 PO4/0 Intra Area Prefix Link States (Area 0) ADV Router Age Seq# Link ID Ref-lstype Ref-LSID 172.16.4.4 242 0x80000002 0 0x2001 0 172.16.6.6 252 0x80000002 0 0x2001 0The table below describes the significant fields shown in the display.
show ospfv3 events
To display detailed information about Open Shortest Path First version 3 (OSPFv3) events, use the show ospfv3 eventscommand in privileged EXEC mode.
show ospfv3 [process-id] [address-family] [ vrf { vrf-name | * } ] events [ generic | interface | lsa | neighbor | reverse | rib | spf ]
Syntax Description
process-id
(Optional) Internal identification. The number used here is the number assigned administratively when enabling the OSPFv3 routing process and can be a value from 1 through 65535.
address-family
(Optional) Enter ipv6 for the IPv6 address family or ipv4 for the IPv4 address family.
vrf
(Optional) VPN Routing/Forwarding instance.
{vrf-name | *}
The virtual routing and forwarding table for which the information should be displayed. If this parameter is not specified, only information for the global routing table is shown. A vrf name of "*" displays information for all vrfs, including the global table.
generic
(Optional) Generic information regarding OSPFv3 events.
interface
(Optional) Interface state change events, including old and new states.
lsa
(Optional) LSA arrival and LSA generation events.
neighbor
(Optional) Neighbor state change events, including old and new states.
reverse
(Optional) Keyword to allow the display of events in reverse-from the latest to the oldest or from oldest to the latest.
rib
(Optional) Routing Information Base (RIB) update, delete, and redistribution events.
spf
(Optional) Scheduling and SPF run events.
Command History
Release
Modification
15.1(3)S
This command was introduced.
Cisco IOS XE Release 3.4S
This command was integrated into Cisco IOS XE Release 3.4S.
15.2(1)T
This command was integrated into Cisco IOS Release 15.2(1)T.
15.2(4)S
This command was integrated into Cisco IOS Release 15.2(4)S.
15.2(4)M
This command was integrated into Cisco IOS Release 15.2(4)M.
15.1(1)SY
This command was integrated into Cisco IOS Release 15.1(1)SY.
show ospfv3 flood-list
To display a list of Open Shortest Path First version 3 (OSPFv3) link-state advertisements (LSAs) waiting to be flooded over an interface, use the s how ospfv3 flood-listcommand in privileged EXEC mode.
show ospfv3 [process-id] [area-id] [address-family] [ vrf { vrf-name | * } ] flood-list interface-type interface-number
Syntax Description
process-id
(Optional) Internal identification. The number used here is the number assigned administratively when enabling the OSPFv3 routing process and can be a value from 1 through 65535.
area-id
(Optional) Displays information only about a specified area.
address-family
(Optional) Enter ipv6 for the IPv6 address family or ipv4 for the IPv4 address family.
vrf
(Optional) VPN Routing/Forwarding instance.
{vrf-name | *}
The virtual routing and forwarding table for which the information should be displayed. If this parameter is not specified, only information for the global routing table is shown. A vrf name of "*" displays information for all vrfs, including the global table.
interface-type
Interface type over which the LSAs will be flooded.
interface-number
Interface number over which the LSAs will be flooded.
Command History
Release
Modification
15.1(3)S
This command was introduced.
Cisco IOS XE Release 3.4S
This command was integrated into Cisco IOS XE Release 3.4S.
15.2(1)T
This command was integrated into Cisco IOS Release 15.2(1)T.
15.2(4)S
This command was integrated into Cisco IOS Release 15.2(4)S.
15.2(4)M
This command was integrated into Cisco IOS Release 15.2(4)M.
15.1(1)SY
This command was integrated into Cisco IOS Release 15.1(1)SY.
show ospfv3 graceful-restart
To display Open Shortest Path First version 3 (OSPFv3) graceful restart information, use the show ospfv3 graceful-restart command in privileged EXEC mode.
Syntax Description
process-id
(Optional) Internal identification. The number used here is the number assigned administratively when enabling the OSPFv3 routing process and can be a value from 1 through 65535.
address-family
(Optional) Enter ipv6 for the IPv6 address family or ipv4 for the IPv4 address family.
vrf
(Optional) VPN Routing/Forwarding instance.
{vrf-name | *}
The virtual routing and forwarding table for which the information should be displayed. If this parameter is not specified, only information for the global routing table is shown. A vrf name of "*" displays information for all vrfs, including the global table.
Command History
Release
Modification
15.1(3)S
This command was introduced.
Cisco IOS XE Release 3.4S
This command was integrated into Cisco IOS XE Release 3.4S.
15.2(1)T
This command was integrated into Cisco IOS Release 15.2(1)T.
15.2(4)S
This command was integrated into Cisco IOS Release 15.2(4)S.
15.2(4)M
This command was integrated into Cisco IOS Release 15.2(4)M.
15.1(1)SY
This command was integrated into Cisco IOS Release 15.1(1)SY.
show ospfv3 interface
To display Open Shortest Path First version 3 (OSPFv3)-related interface information, use the show ospfv3 interface command in privileged mode.
show ospfv3 [process-id] [area-id] [address-family] [ vrf { vrf-name | * } ] interface [ type number ] [brief]
Syntax Description
process-id
(Optional) Internal identification. The number used here is the number assigned administratively when enabling the OSPFv3 routing process and can be a value from 1 through 65535.
area-id
(Optional) Displays information about a specified area only.
address-family
(Optional) Enter ipv6 for the IPv6 address family or ipv4 for the IPv4 address family.
vrf
(Optional) VPN Routing/Forwarding instance.
{vrf-name | *}
The virtual routing and forwarding table for which the information should be displayed. If this parameter is not specified, only information for the global routing table is shown. A vrf name of "*" displays information for all vrfs, including the global table.
type number
(Optional) Interface type and number.
brief
(Optional) Displays brief overview information for OSPFv3 interfaces, states, addresses and masks, and areas on the router.
Command History
Release
Modification
15.1(3)S
This command was introduced.
Cisco IOS XE Release 3.4S
This command was integrated into Cisco IOS XE Release 3.4S.
15.2(1)T
This command was integrated into Cisco IOS Release 15.2(1)T.
15.2(4)S
This command was integrated into Cisco IOS Release 15.2(4)S.
15.2(4)M
This command was integrated into Cisco IOS Release 15.2(4)M.
15.1(1)SY
This command was integrated into Cisco IOS Release 15.1(1)SY.
Examples
The following is sample output from the show ospfv3 interface command for a Mobile Ad Hoc Network (MANET) environment:
Router# show ospfv3 interface Ethernet0/0 is up, line protocol is up Link Local Address FE80::A8BB:CCFF:FE01:5500, Interface ID 3 Area 0, Process ID 100, Instance ID 0, Router ID 172.16.3.3 Network Type MANET, Cost: 10 (dynamic), Cost Hysteresis: Disabled Cost Weights: Throughput 100, Resources 100, Latency 100, L2-factor 100 Transmit Delay is 1 sec, State POINT_TO_MULTIPOINT, Timer intervals configured, Hello 5, Dead 20, Wait 20, Retransmit 5 Hello due in 00:00:01 Supports Link-local Signaling (LLS) Index 1/1/1, flood queue length 0 Next 0x0(0)/0x0(0)/0x0(0) Last flood scan length is 2, maximum is 2 Last flood scan time is 0 msec, maximum is 0 msec Neighbor Count is 1, Adjacent neighbor count is 1 Adjacent with neighbor 2.2.2.2 Suppress hello for 0 neighbor(s) Incremental Hello is enabled Local SCS number 1 Relaying enabled Next 0x0(0)/0x0(0)/0x0(0) Last flood scan length is 12, maximum is 12 Last flood scan time is 0 msec, maximum is 0 msec Neighbor Count is 1, Adjacent neighbor count is 1 Adjacent with neighbor 172.16.6.6 (Designated Router) Suppress hello for 0 neighbor(s) Router#The table below describes the significant fields shown in the display.
Table 32 show ospfv3 interface Field Descriptions Field
Description
Ethernet0/0
Status of the physical link and the operational status of the protocol.
Link Local Address
Interface IPv6 address.
Area 0, Process ID 100, Instance ID 0, Router ID 172.16.3.3
Area ID, process ID, instance ID, and router ID of the area from which this route is learned.
Network Type MANET, Cost: 10 (dynamic), Cost hysteresis: Disabled
Network type and link-state cost.
Transmit Delay
Transmit delay, interface state, and router priority.
Timer intervals configured
Configuration of timer intervals, including hello-increment and dead-interval.
Hello due in 00:00:01
Number of seconds until the next hello packet is sent from this interface.
Supports Link-local Signaling (LLS)
Indicates that LLS is supported.
Last flood scan length is 2, maximum is 2
Indicates length of last flood scan and the maximum length.
Last flood scan time is 0 msec, maximum is 0 msec
Indicates how many milliseconds the last flood scan occurred and the maximum time length.
Neighbor Count
Count of network neighbors and a list of adjacent neighbors.
Adjacent with neighbor 2.2.2.2
Lists the adjacent neighbor.
Suppress hello for 0 neighbor(s)
Indicates the number of neighbors to suppress hello messages
show ospfv3 max-metric
To display Open Shortest Path First version 3 (OSPFv3) maximum metric origination information, use the show ospfv3 max-metric command in user EXEC or privileged EXEC mode.
Syntax Description
process-id
(Optional) Internal identification. The number used here is the number assigned administratively when enabling the OSPFv3 routing process and can be a value from 1 through 65535.
address-family
(Optional) Enter ipv6 for the IPv6 address family or ipv4 for the IPv4 address family.
vrf
(Optional) VPN Routing/Forwarding instance.
{vrf-name | *}
The virtual routing and forwarding table for which the information should be displayed. If this parameter is not specified, only information for the global routing table is shown. A vrf name of "*" displays information for all vrfs, including the global table.
Command History
Release
Modification
15.1(3)S
This command was introduced.
Cisco IOS XE Release 3.4S
This command was integrated into Cisco IOS XE Release 3.4S.
15.2(4)S
This command was integrated into Cisco IOS Release 15.2(4)S.
15.2(4)M
This command was integrated into Cisco IOS Release 15.2(4)M.
15.1(1)SY
This command was integrated into Cisco IOS Release 15.1(1)SY.
Usage Guidelines
The information displayed by the show ospfv3 max-metric command is useful in debugging OSPFv3 routing operations. You can also use the show ipv6 ospf max-metric command display the same information as the show ospfv3 max-metric command.
Examples
The following is sample output from the show ospfv3 max-metric command:
Router# show ospfv3 1 max-metric Routing Process "ospfv3 1" with ID 192.168.2.1 Event-log enabled, Maximum number of events: 1000, Mode: cyclic Originating router-LSAs with maximum metric, Time remaining: 00:01:18 Condition: on startup while BGP is converging, State: active Initial SPF schedule delay 5000 msecs Minimum hold time between two consecutive SPFs 10000 msecs Maximum wait time between two consecutive SPFs 10000 msecs Minimum LSA interval 5 secs Minimum LSA arrival 1000 msecs LSA group pacing timer 240 secs Interface flood pacing timer 33 msecs Retransmission pacing timer 66 msecs Number of external LSA 0. Checksum Sum 0x000000 Number of areas in this router is 1. 1 normal 0 stub 0 nssa Graceful restart helper support enabled Reference bandwidth unit is 100 mbps Area BACKBONE(0) Number of interfaces in this area is 1 SPF algorithm executed 2 times Number of LSA 6. Checksum Sum 0x0327C7 Number of DCbitless LSA 0 Number of indication LSA 0 Number of DoNotAge LSA 0 Flood list length 0The table below describes the significant fields shown in the display.
Table 33 show ospfv3 max-metric command Field
Description
Routing Process "ospfv3 1" with ID 192.168.2.1
The routing process specified by process ID.
Event-log enabled, Maximum number of events: 1000, Mode: cyclic
Configuration for this OSPFv3 process.
Originating router-LSAs with maximum metric, Time remaining: 00:01:18
Condition: on startup while BGP is converging, State: active
The router advertises a max metric until Border Gateway Protocol (BGP) routing tables have converged or the default timer has expired.
show ospfv3 neighbor
To display Open Shortest Path First for IPv6 (OSPFv3) neighbor information on a per-interface basis, use the show ospfv3 neighbor command in user EXEC or privileged EXEC mode.
show ospfv3 [process-id] [area-id] [address-family] [ vrf { vrf-name | * } ] neighbor [ interface-type interface-number ] [neighbor-id] [detail] [summary [per-instance]]
Syntax Description
process-id
(Optional) Internal identification. The number used here is the number assigned administratively when enabling the OSPFv3 routing process and can be a value from 1 through 65535.
area-id
(Optional) Displays information only about a specified area.
address-family
(Optional) Enter ipv6 for the IPv6 address family or ipv4 for the IPv4 address family.
vrf
(Optional) VPN Routing/Forwarding instance.
{vrf-name | *}
The virtual routing and forwarding table for which the information should be displayed. If this parameter is not specified, only information for the global routing table is shown. A vrf name of "*" displays information for all vrfs, including the global table.
interface-type interface-number
(Optional) Interface type and number.
neighbor-id
(Optional) Neighbor ID.
detail
(Optional) Displays all neighbors in detail (lists all neighbors).
summary
(Optional) Displays total number summary of all neighbors.
per-instance
(Optional) Displays total number of neighbors in each neighbor state. The output is printed for each configured OSPF instance separately.
Command History
Release
Modification
15.1(3)S
This command was introduced.
Cisco IOS XE Release 3.4S
This command was integrated into Cisco IOS XE Release 3.4S.
15.2(1)T
This command was integrated into Cisco IOS Release 15.2(1)T.
15.2(4)S
This command was integrated into Cisco IOS Release 15.2(4)S.
15.2(4)M
This command was integrated into Cisco IOS Release 15.2(4)M. This command was modified. The summary and per-instance keywords were added.
Cisco IOS XE Release 3.8S
This command was integrated into Cisco IOS XE Release 3.8S. This command was modified. The summary and per-instance keywords were added.
Examples
The following is sample output from the show ospfv3 neighbor command:
Device# show ospfv3 neighbor OSPFv3 Router with ID (42.1.1.1) (Process ID 42) Neighbor ID Pri State Dead Time Interface ID Interface 44.4.4.4 1 FULL/ - 00:00:39 12 vm1 OSPFv3 Router with ID (1.1.1.1) (Process ID 100) Neighbor ID Pri State Dead Time Interface ID Interface 4.4.4.4 1 FULL/ - 00:00:35 12 vm1The following is sample output from the show ospfv3 neighbor command with the detail keyword for a Mobile Ad Hoc Network (MANET) environment:
Device# show ospfv3 neighbor detail Neighbor 42.4.4.4, interface address 4.4.4.4 In the process ID 42 area 0 via interface vmi1 Neighbor: interface-id 12, link-local address FE80::A8BB:CCFF:FE01:5800 Neighbor priority is 1, State is FULL, 6 state changes Options is 0x000F12 in Hello (E-Bit, R-bit, AF-Bit, L-Bit, I-Bit, F-Bit) Options is 0x000112 in DBD (E-Bit, R-bit, AF-Bit) Dead timer due in 00:00:33 Neighbor is up for 00:09:43 Index 1/1/1, retransmission queue length 0, number of retransmission 0 First 0x0(0)/0x0(0)/0x0(0) Next 0x0(0)/0x0(0)/0x0(0) Last retransmission scan length is 0, maximum is 0 Last retransmission scan time is 0 msec, maximum is 0 msec Neighbor is incremental Hello capable Last known SCS number 1 Neighbor's willingness 128 We are standby relay for the neighbor This neighbor is standby relay for us Neighbor is running Manet Version 10 Neighbor 4.4.4.4 In the process ID 100 area 0 via interface vmi1 Neighbor: interface-id 12, link-local address FE80::A8BB:CCFF:FE01:5800 Neighbor priority is 1, State is FULL, 6 state changes Options is 0x000E13 in Hello (V6-Bit, E-Bit, R-bit, L-Bit, I-Bit, F-Bit) Options is 0x000013 in DBD (V6-Bit, E-Bit, R-bit) Dead timer due in 00:00:37 Neighbor is up for 00:09:43 Index 1/1/1, retransmission queue length 0, number of retransmission 0 First 0x0(0)/0x0(0)/0x0(0) Next 0x0(0)/0x0(0)/0x0(0) Last retransmission scan length is 0, maximum is 0 Last retransmission scan time is 0 msec, maximum is 0 msec Neighbor is incremental Hello capable Last known SCS number 1 Neighbor's willingness 128 Two-hop neighbors: 5.5.5.5 We are standby relay for the neighbor This neighbor is active relay for us Neighbor is running Manet Version 10 Selective Peering is enabled 1 paths to this neighbor Neighbor peering state: Slave, local peering state: Master, Default cost metric is 0 Minimum incremental cost is 10The table below describes the significant fields shown in the display.
Table 34 show ospfv3 neighbor Field Descriptions Field
Description
Neighbor ID; Neighbor
Neighbor device ID.
In the area
Area and interface through which the OSPFv3 neighbor is known.
Pri; Neighbor priority
Device priority of the neighbor, neighbor state.
State
OSPFv3 state.
State changes
Number of state changes since the neighbor was created.
Options
Hello packet options field contents (E-bit only). Possible values are 0 and 2; 2 indicates area is not a stub; 0 indicates area is a stub.)
Dead timer due in
Expected time before Cisco IOS software declares the neighbor dead.
Neighbor is up for
Number of hours:minutes:seconds since the neighbor went into two-way state.
Index
Neighbor location in the area-wide and autonomous system-wide retransmission queue.
retransmission queue length
Number of elements in the retransmission queue.
number of retransmission
Number of times update packets have been resent during flooding.
First
Memory location of the flooding details.
Next
Memory location of the flooding details.
Last retransmission scan length
Number of link state advertisements (LSAs) in the last retransmission packet.
maximum
Maximum number of LSAs sent in any retransmission packet.
Last retransmission scan time
Time taken to build last retransmission packet.
maximum
Maximum time taken to build any retransmission packet.
Neighbor is incremental Hello capable
The MANET neighbor interface is capable of receiving increment hello messages.
A neighbor must be capable of sending and receiving incremental hello packets to be a full neighbor on a MANET interface.
Last known SCS number 1
Indicates the last received MANET state. The State Change Sequence number is included in the incremental hello packet.
Neighbor’s willingness 128
Indicates the neighbors willingness to act as an active relay for this device, on a scale of 0 (not willing) to 255 (always willing).
Willingness is used as a tiebreaker when electing an active relay.
We are standby relay for neighbor
Indicates that this device will not flood LSAs received from this neighbor until one or more of its neighbors fails to acknowledge receiving the LSA flood from another neighbor.
Neighbor is running Manet Version 10
Indicates the MANET version number.
Devices cannot establish full adjacency unless they are running the same MANET version.
Two-hop neighbors
Lists the device IDs of all full neighbors of the specified device that are not also neighbors of this device.
Selective Peering is enabled
The MANET interface has selective peering enabled.
1 paths to this neighbor
Indicates the number of unique paths to this device that exist in the routing table.
This number might exceed the redundancy level configured for this OSPFv3 process.
Neighbor peering state...
Indicates which device is entitled to make the selective peering decision.
Generally speaking, the entitled device has the smaller number of full neighbors at the time the devices discover each other.
Default cost metric is 0
Indicates the maximum OSPFv3 cost to a new neighbor to be considered for selective peering.
If 0, a threshold OSPFv3 cost is not required for consideration.
Minimum incremental cost is 10
Indicates the minimum cost increment for the specified interface.
The following is sample output from the show ospfv3 neighbor summary command:
Device# show ospfv3 neighbor summary OSPFv3 1 address-family ipv6 (router-id 10.4.9.158) DOWN 0 ATTEMPT 0 INIT 0 2WAY 0 EXSTART 0 EXCHANGE 0 LOADING 0 FULL 1 Total count 1 (Undergoing GR 0)The following is sample output from the show ospfv3 neighbor summary per-instance command:
Device# show ospfv3 neighbor summary per-instance OSPFv3 1 address-family ipv6 (router-id 10.4.9.158) DOWN 0 ATTEMPT 0 INIT 0 2WAY 0 EXSTART 0 EXCHANGE 0 LOADING 0 FULL 1 Total count 0 (Undergoing GR 0) Neighbor summary for selected OSPFv3 processes DOWN 0 ATTEMPT 0 INIT 0 2WAY 0 EXSTART 0 EXCHANGE 0 LOADING 0 FULL 1 Total count 0 (Undergoing GR 0)
Table 35 show ospfv3 neighbor summary and show ospfv3 neighbor summary per-instance Field Descriptions Field
Description
DOWN
No information (hellos) has been received from this neighbor, but hello packets can still be sent to the neighbor in this state.
ATTEMPT
This state is only valid for manually configured neighbors in a Non-Broadcast Multi-Access (NBMA) environment. In Attempt state, the device sends unicast hello packets every poll interval to the neighbor, from which hellos have not been received within the dead interval.
INIT
This state specifies that the device has received a hello packet from its neighbor, but the receiving device's ID was not included in the hello packet. When a device receives a hello packet from a neighbor, it should list the sender's device ID in its hello packet as an acknowledgment that it received a valid hello packet.
2WAY
This state designates that bi-directional communication has been established between two devices.
EXSTART
This state is the first step in creating an adjacency between the two neighboring devices. The goal of this step is to decide which device is the master, and to decide upon the initial DD sequence number. Neighbor conversations in this state or greater are called adjacencies.
EXCHANGE
In this state, OSPF devices exchange database descriptor (DBD) packets. Database descriptors contain link-state advertisement (LSA) headers only and describe the contents of the entire link-state database. Each DBD packet has a sequence number which can be incremented only by master which is explicitly acknowledged by slave. Devices also send link-state request packets and link-state update packets (which contain the entire LSA) in this state. The contents of the DBD received are compared to the information contained in the devices link-state database to check if new or more current link-state information is available with the neighbor.
LOADING
In this state, the actual exchange of link state information occurs. Based on the information provided by the DBDs, devices send link-state request packets. The neighbor then provides the requested link-state information in link-state update packets. During the adjacency, if a device receives an outdated or missing LSA, it requests that LSA by sending a link-state request packet. All link-state update packets are acknowledged.
FULL
In this state, devices are fully adjacent with each other. All the device and network LSAs are exchanged and the devices' databases are fully synchronized.
Full is the normal state for an OSPF device. If a device is stuck in another state, it's an indication that there are problems in forming adjacencies. The only exception to this is the 2-way state, which is normal in a broadcast network. Devices achieve the full state with their DR and BDR only. Neighbors always see each other as 2-way.
show ospfv3 request-list
To display a list of all link-state advertisements (LSAs) requested by a router, use the show ospfv3 request-listcommand in user EXEC or privileged EXEC mode.
show ospfv3 [process-id] [area-id] [address-family] [ vrf { vrf-name | * } ] request-list [neighbor] [interface] [interface-neighbor]
Syntax Description
process-id
(Optional) Internal identification. The number used here is the number assigned administratively when enabling the Open Shortest Path First version 3 (OSPFv3) routing process and can be a value from 1 through 65535.
area-id
(Optional) Displays information only about a specified area.
address-family
(Optional) Enter ipv6 for the IPv6 address family or ipv4 for the IPv4 address family.
vrf
(Optional) VPN Routing/Forwarding instance.
{vrf-name | *}
The virtual routing and forwarding table for which the information should be displayed. If this parameter is not specified, only information for the global routing table is shown. A vrf name of "*" displays information for all vrfs, including the global table.
neighbor
(Optional) Displays the list of all LSAs requested by the router from this neighbor.
interface
(Optional) Displays the list of all LSAs requested by the router from this interface.
interface-neighbor
(Optional) Displays the list of all LSAs requested by the router on this interface, from this neighbor.
Command History
Release
Modification
15.1(3)S
This command was introduced.
Cisco IOS XE Release 3.4S
This command was integrated into Cisco IOS XE Release 3.4S.
15.2(1)T
This command was integrated into Cisco IOS Release 15.2(1)T.
15.2(4)S
This command was integrated into Cisco IOS Release 15.2(4)S.
15.2(4)M
This command was integrated into Cisco IOS Release 15.2(4)M.
15.1(1)SY
This command was integrated into Cisco IOS Release 15.1(1)SY.
Usage Guidelines
The information displayed by the show ospfv3 request-list command is useful in debugging OSPFv3 routing operations.
Examples
The following example shows information about the LSAs requested by the router:
Router# show ospfv3 request-list OSPFv3 Router with ID (192.168.255.5) (Process ID 1) Neighbor 192.168.255.2, interface Ethernet0/0 address FE80::A8BB:CCFF:FE00:6600 Type LS ID ADV RTR Seq NO Age Checksum 1 0.0.0.0 192.168.255.3 0x800000C2 1 0x0014C5 1 0.0.0.0 192.168.255.2 0x800000C8 0 0x000BCA 1 0.0.0.0 192.168.255.1 0x800000C5 1 0x008CD1 2 0.0.0.3 192.168.255.3 0x800000A9 774 0x0058C0 2 0.0.0.2 192.168.255.3 0x800000B7 1 0x003A63The table below describes the significant fields shown in the display.
Table 36 show ospfv3 request-list Field Descriptions Field
Description
OSPFv3 Router with ID (192.168.255.5) (Process ID 1)
Identification of the router for which information is displayed.
Interface Ethernet0/0
Interface for which information is displayed.
Type
Type of LSA.
LS ID
Link-state ID of the LSA.
ADV RTR
IP address of advertising router.
Seq NO
Sequence number of LSA.
Age
Age of LSA (in seconds).
Checksum
Checksum of LSA.
show ospfv3 retransmission-list
To display a list of all link-state advertisements (LSAs) waiting to be re-sent, use the show ospfv3 retransmission-listcommand in user EXEC or privileged EXEC mode.
show ospfv3 [process-id] [area-id] [address-family] [ vrf { vrf-name | * } ] retransmission-list [neighbor] [interface] [interface-neighbor]
Syntax Description
process-id
(Optional) Internal identification. The number used here is the number assigned administratively when enabling the Open Shortest Path First version 3 (OSPFv3) routing process and can be a value from 1 through 65535.
area-id
(Optional) Displays information only about a specified area.
address-family
(Optional) Enter ipv6 for the IPv6 address family or ipv4 for the IPv4 address family.
vrf
(Optional) VPN Routing/Forwarding instance.
{vrf-name | *}
The virtual routing and forwarding table for which the information should be displayed. If this parameter is not specified, only information for the global routing table is shown. A vrf name of "*" displays information for all vrfs, including the global table.
neighbor
(Optional) Displays the list of all LSAs waiting to be re-sent for this neighbor.
interface
(Optional) Displays the list of all LSAs waiting to be re-sent on this interface.
interface neighbor
(Optional) Displays the list of all LSAs waiting to be re-sent on this interface, from this neighbor.
Command History
Release
Modification
15.1(3)S
This command was introduced.
Cisco IOS XE Release 3.4S
This command was integrated into Cisco IOS XE Release 3.4S.
15.2(1)T
This command was integrated into Cisco IOS Release 15.2(1)T.
15.2(4)S
This command was integrated into Cisco IOS Release 15.2(4)S.
15.2(4)M
This command was integrated into Cisco IOS Release 15.2(4)M.
15.1(1)SY
This command was integrated into Cisco IOS Release 15.1(1)SY.
Usage Guidelines
The information displayed by the show ospfv3 retransmission-list command is useful in debugging Open Shortest Path First version 3 (OSPFv3) routing operations.
Examples
The following is sample output from the show ospfv3 retransmission-list command:
Router# show ospfv3 retransmission-list OSPFv3 Router with ID (192.168.255.2) (Process ID 1) Neighbor 192.168.255.1, interface Ethernet0/0 Link state retransmission due in 3759 msec, Queue length 1 Type LS ID ADV RTR Seq NO Age Checksum 0x2001 0 192.168.255.2 0x80000222 1 0x00AE52The table below describes the significant fields shown in the display.
Table 37 show ospfv3 retransmission-list Field Descriptions Field
Description
OSPFv3 Router with ID (192.168.255.2) (Process ID 1)
Identification of the router for which information is displayed.
Interface Ethernet0/0
Interface for which information is displayed.
Link state retransmission due in
Length of time before next link-state transmission.
Queue length
Number of elements in the retransmission queue.
Type
Type of LSA.
LS ID
Link-state ID of the LSA.
ADV RTR
IP address of advertising router.
Seq NO
Sequence number of the LSA.
Age
Age of LSA (in seconds).
Checksum
Checksum of LSA.
show ospfv3 statistic
To display Open Shortest Path First version 3 (OSPFv3) shortest path first (SPF) calculation statistics, use the show ospfv3 statistic command in user EXEC or privileged EXEC mode.
Syntax Description
process-id
(Optional) Internal identification. The number used here is the number assigned administratively when enabling the OSPFv3 routing process and can be a value from 1 through 65535.
address-family
(Optional) Enter ipv6 for the IPv6 address family or ipv4 for the IPv4 address family.
vrf
(Optional) VPN Routing/Forwarding instance.
{vrf-name | *}
The virtual routing and forwarding table for which the information should be displayed. If this parameter is not specified, only information for the global routing table is shown. A vrf name of "*" displays information for all vrfs, including the global table.
detail
(Optional) Displays statistics separately for each OSPFv3 area and includes additional, more detailed statistics.
Command History
Release
Modification
15.1(3)S
This command was introduced.
Cisco IOS XE Release 3.4S
This command was integrated into Cisco IOS XE Release 3.4S.
15.2(1)T
This command was integrated into Cisco IOS Release 15.2(1)T.
15.2(4)S
This command was integrated into Cisco IOS Release 15.2(4)S.
15.2(4)M
This command was integrated into Cisco IOS Release 15.2(4)M.
15.1(1)SY
This command was integrated into Cisco IOS Release 15.1(1)SY.
Usage Guidelines
The show ospfv3 statistics command provides important information about SPF calculations and the events that trigger them. This information can be meaningful for both OSPF network maintenance and troubleshooting. For example, entering the show ospfv3 statistics command is recommended as the first troubleshooting step for link-state advertisement (LSA) flapping.
Examples
The following example provides detailed statistics for each OSPFv3 area:
Router# show ospfv3 statistics detail Area 0: SPF algorithm executed 3 times SPF 1 executed 00:06:57 ago, SPF type Full SPF calculation time (in msec): SPT Prefix D-Int Sum D-Sum Ext D-Ext Total 0 0 0 0 0 0 0 0 RIB manipulation time (in msec): RIB Update RIB Delete 0 0 LSIDs processed R:1 N:0 Prefix:0 SN:0 SA:0 X7:0 Change record R N SN SA L LSAs changed 1 Changed LSAs. Recorded is Advertising Router, LSID and LS type: 10.2.2.2/0(R) SPF 2 executed 00:06:47 ago, SPF type Full SPF calculation time (in msec): SPT Prefix D-Int Sum D-Sum Ext D-Ext Total 0 0 0 0 0 0 0 0 RIB manipulation time (in msec): RIB Update RIB Delete 0 0 LSIDs processed R:1 N:0 Prefix:1 SN:0 SA:0 X7:0 Change record R L P LSAs changed 4 Changed LSAs. Recorded is Advertising Router, LSID and LS type: 10.2.2.2/2(L) 10.2.2.2/0(R) 10.2.2.2/2(L) 10.2.2.2/0(P)The table below describes the significant fields shown in the display.
Table 38 show ospfv3 statistics Field Descriptions Field
Description
Area
OSPF area ID.
SPF
Number of SPF algorithms executed in the OSPF area. The number increases by one for each SPF algorithm that is executed in the area.
Executed ago
Time in milliseconds that has passed between the start of the SPF algorithm execution and the current time.
SPF type
SPF type can be Full or Incremental.
SPT
Time in milliseconds required to compute the first stage of the SPF algorithm (to build a short path tree). The SPT time plus the time required to process links to stub networks equals the Intra time.
Ext
Time in milliseconds for the SPF algorithm to process external and not so stubby area (NSSA) LSAs and to install external and NSSA routes in the routing table.
Total
Total duration time in milliseconds for the SPF algorithm process.
LSIDs processed
Number of LSAs processed during the SPF calculation:
show ospfv3 summary-prefix
To display a list of all summary address redistribution information configured under an Open Shortest Path First version 3 (OSPFv3) process, use the show ospfv3 summary-prefixcommand in user EXEC or privileged EXEC mode.
Syntax Description
process-id
(Optional) Internal identification. The number used here is the number assigned administratively when enabling the OSPFv3 routing process and can be a value from 1 through 65535.
address-family
(Optional) Enter ipv6 for the IPv6 address family or ipv4 for the IPv4 address family.
vrf
(Optional) VPN Routing/Forwarding instance.
{vrf-name | *}
The virtual routing and forwarding table for which the information should be displayed. If this parameter is not specified, only information for the global routing table is shown. A vrf name of "*" displays information for all vrfs, including the global table.
Command History
Release
Modification
15.1(3)S
This command was introduced.
Cisco IOS XE Release 3.4S
This command was integrated into Cisco IOS XE Release 3.4S.
15.2(1)T
This command was integrated into Cisco IOS Release 15.2(1)T.
15.2(4)S
This command was integrated into Cisco IOS Release 15.2(4)S.
15.2(4)M
This command was integrated into Cisco IOS Release 15.2(4)M.
15.1(1)SY
This command was integrated into Cisco IOS Release 15.1(1)SY.
Usage Guidelines
The process-id argument can be entered as a decimal number or as an IPv6 address format.
show ospfv3 timers rate-limit
To display all of the link-state advertisements (LSAs) in the rate limit queue, use the show ospfv3 timers rate-limitcommand in privileged EXEC mode.
Syntax Description
process-id
(Optional) Internal identification. The number used here is the number assigned administratively when enabling the OSPFv3 routing process and can be a value from 1 through 65535.
address-family
(Optional) Enter ipv6 for the IPv6 address family or ipv4 for the IPv4 address family.
vrf
(Optional) VPN Routing/Forwarding instance.
{vrf-name | *}
The virtual routing and forwarding table for which the information should be displayed. If this parameter is not specified, only information for the global routing table is shown. A vrf name of "*" displays information for all vrfs, including the global table.
Command History
Release
Modification
15.1(3)S
This command was introduced.
Cisco IOS XE Release 3.4S
This command was integrated into Cisco IOS XE Release 3.4S.
15.2(1)T
This command was integrated into Cisco IOS Release 15.2(1)T.
15.2(4)S
This command was integrated into Cisco IOS Release 15.2(4)S.
15.2(4)M
This command was integrated into Cisco IOS Release 15.2(4)M.
15.1(1)SY
This command was integrated into Cisco IOS Release 15.1(1)SY.
Usage Guidelines
Use the show ospfv3 timers rate-limit command to discover when LSAs in the queue will be sent.
Examples
The following is sample output from the show ospfv3 timers rate-limitcommand:
Router# show ospfv3 timers rate-limit List of LSAs that are in rate limit Queue LSAID: 0.0.0.0 Type: 0x2001 Adv Rtr: 55.55.55.55 Due in: 00:00:00.500 LSAID: 0.0.0.0 Type: 0x2009 Adv Rtr: 55.55.55.55 Due in: 00:00:00.500The table below describes the significant fields shown in the display.
show ospfv3 traffic
To display Open Shortest Path First version 3 (OSPFv3) traffic statistics, use the show ospfv3 trafficcommand in privileged EXEC mode.
show ospfv3 [process-id] [address-family] [ vrf { vrf-name | * } ] traffic [ interface-type interface-number ]
Syntax Description
process-id
(Optional) Internal identification. The number used here is the number assigned administratively when enabling the OSPFv3 routing process and can be a value from 1 through 65535.
address-family
(Optional) Enter ipv6 for the IPv6 address family or ipv4 for the IPv4 address family.
vrf
(Optional) VPN Routing/Forwarding instance.
{vrf-name | *}
The virtual routing and forwarding table for which the information should be displayed. If this parameter is not specified, only information for the global routing table is shown. A vrf name of "*" displays information for all vrfs, including the global table.
interface-type interface-number
(Optional) Type and number associated with a specific OSPFv3 interface.
Command Default
When the show ospfv3 traffic command is entered without any arguments, global OSPFv3 traffic statistics are displayed, including queue statistics for each OSPFv3 process, statistics for each interface, and per OSPFv3 process statistics.
Command History
Release
Modification
15.1(3)S
This command was introduced.
Cisco IOS XE Release 3.4S
This command was integrated into Cisco IOS XE Release 3.4S.
15.2(1)T
This command was integrated into Cisco IOS Release 15.2(1)T.
15.2(4)S
This command was integrated into Cisco IOS Release 15.2(4)S.
15.2(4)M
This command was integrated into Cisco IOS Release 15.2(4)M.
15.1(1)SY
This command was integrated into Cisco IOS Release 15.1(1)SY.
Usage Guidelines
You can limit the displayed traffic statistics to those for a specific OSPFv3 process by entering a value for the process-id argument, or you can limit output to traffic statistics for a specific interface associated with an OSPFv3 process by entering values for the interface-type and interface-number arguments.
Examples
The following example shows the display output for the show ospfv3 traffic command for OSPFv3:
Router# show ospfv3 traffic OSPFv3 statistics: Rcvd: 32 total, 0 checksum errors 10 hello, 7 database desc, 2 link state req 9 link state updates, 4 link state acks 0 LSA ignored Sent: 45 total, 0 failed 17 hello, 12 database desc, 2 link state req 8 link state updates, 6 link state acks OSPFv3 Router with ID (10.1.1.4) (Process ID 6) OSPFv3 queues statistic for process ID 6 Hello queue size 0, no limit, max size 2 Router queue size 0, limit 200, drops 0, max size 2 Interface statistics: Interface Serial2/0 OSPFv3 packets received/sent Type Packets Bytes RX Invalid 0 0 RX Hello 5 196 RX DB des 4 172 RX LS req 1 52 RX LS upd 4 320 RX LS ack 2 112 RX Total 16 852 TX Failed 0 0 TX Hello 8 304 TX DB des 3 144 TX LS req 1 52 TX LS upd 3 252 TX LS ack 3 148 TX Total 18 900 OSPFv3 header errors Length 0, Checksum 0, Version 0, No Virtual Link 0, Area Mismatch 0, Self Originated 0, Duplicate ID 0, Instance ID 0, Hello 0, MTU Mismatch 0, Nbr Ignored 0, Authentication 0, OSPFv3 LSA errors Type 0, Length 0, Data 0, Checksum 0, Interface Ethernet0/0 OSPFv3 packets received/sent Type Packets Bytes RX Invalid 0 0 RX Hello 6 240 RX DB des 3 144 RX LS req 1 52 RX LS upd 5 372 RX LS ack 2 152 RX Total 17 960 TX Failed 0 0 TX Hello 11 420 TX DB des 9 312 TX LS req 1 52 TX LS upd 5 376 TX LS ack 3 148 TX Total 29 1308 OSPFv3 header errors Length 0, Checksum 0, Version 0, No Virtual Link 0, Area Mismatch 0, Self Originated 0, Duplicate ID 0, Instance ID 0, Hello 0, MTU Mismatch 0, Nbr Ignored 0, Authentication 0, OSPFv3 LSA errors Type 0, Length 0, Data 0, Checksum 0, Summary traffic statistics for process ID 6: OSPFv3 packets received/sent Type Packets Bytes RX Invalid 0 0 RX Hello 11 436 RX DB des 7 316 RX LS req 2 104 RX LS upd 9 692 RX LS ack 4 264 RX Total 33 1812 TX Failed 0 0 TX Hello 19 724 TX DB des 12 456 TX LS req 2 104 TX LS upd 8 628 TX LS ack 6 296 TX Total 47 2208 OSPFv3 header errors Length 0, Checksum 0, Version 0, No Virtual Link 0, Area Mismatch 0, Self Originated 0, Duplicate ID 0, Instance ID 0, Hello 0, MTU Mismatch 0, Nbr Ignored 0, Authentication 0, OSPFv3 LSA errors Type 0, Length 0, Data 0, Checksum 0,The table below describes the significant fields shown in the display.
Table 41 show ospfv3 traffic Field Descriptions Field
Description
OSPFv3 statistics
Traffic statistics accumulated for all OSPFv3 processes running on the router. To ensure compatibility with the show ip traffic command, only checksum errors are displayed. Identifies the route map name.
OSPFv3 queues statistic for process ID
Queue statistics specific to Cisco IOS software.
Hello queue
Statistics for the internal Cisco IOS queue between the packet switching code (process IP Input) and the OSPFv3 hello process for all received OSPFv3 packets.
Router queue
Statistics for the internal Cisco IOS queue between the OSPFv3 hello process and the OSPFv3 router for all received OSPFv3 packets except OSPFv3 hellos.
queue size
Actual size of the queue.
queue limit
Maximum allowed size of the queue.
queue max size
Maximum recorded size of the queue.
Interface statistics
Per-interface traffic statistics for all interfaces that belong to the specific OSPFv3 process ID.
OSPFv3 packets received/sent
Number of OSPFv3 packets received and sent on the interface, sorted by packet types.
OSPFv3 header errors
Packet appears in this section if it was discarded because of an error in the header of an OSPFv3 packet. The discarded packet is counted under the appropriate discard reason.
OSPFv3 LSA errors
Packet appears in this section if it was discarded because of an error in the header of an OSPFv3 link-state advertisement (LSA). The discarded packet is counted under the appropriate discard reason.
Summary traffic statistics for process ID
Summary traffic statistics accumulated for an OSPFv3 process.
Note The OSPFv3 process ID is a unique value assigned to the OSPFv3 process in the configuration.
The value for the received errors is the sum of the OSPFv3 header errors that are detected by the OSPFv3 process, unlike the sum of the checksum errors that are listed in the global OSPFv3 statistics.
show ospfv3 virtual-links
To display parameters and the current state of Open Shortest Path First version 3 (OSPFv3) virtual links, use the show ospfv3 virtual-links command in user EXEC or privileged EXEC mode.
Syntax Description
process-id
(Optional) Internal identification. The number used here is the number assigned administratively when enabling the OSPFv3 routing process and can be a value from 1 through 65535.
address-family
(Optional) Enter ipv6 for the IPv6 address family or ipv4 for the IPv4 address family.
vrf
(Optional) VPN Routing/Forwarding instance.
{vrf-name | *}
The virtual routing and forwarding table for which the information should be displayed. If this parameter is not specified, only information for the global routing table is shown. A vrf name of "*" displays information for all vrfs, including the global table.
Command History
Release
Modification
15.1(3)S
This command was introduced.
Cisco IOS XE Release 3.4S
This command was integrated into Cisco IOS XE Release 3.4S.
15.2(1)T
This command was integrated into Cisco IOS Release 15.2(1)T.
15.2(4)S
This command was integrated into Cisco IOS Release 15.2(4)S.
15.2(4)M
This command was integrated into Cisco IOS Release 15.2(4)M.
15.1(1)SY
This command was integrated into Cisco IOS Release 15.1(1)SY.
Usage Guidelines
The information displayed by the show ospfv3 virtual-links command is useful in debugging OSPFv3 routing operations.
Examples
The following is sample output from the show ospfv3 virtual-links command:
Router# show ospfv3 virtual-links Virtual Link OSPF_VL0 to router 172.16.6.6 is up Interface ID 27, IPv6 address FEC0:6666:6666:: Run as demand circuit DoNotAge LSA allowed. Transit area 2, via interface ATM3/0, Cost of using 1 Transmit Delay is 1 sec, State POINT_TO_POINT, Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5 Hello due in 00:00:06The table below describes the significant fields shown in the display.
Table 42 show ospfv3 virtual-links Field Descriptions Field
Description
Virtual Link OSPF_VL0 to router 172.16.6.6 is up
Specifies the OSPFv3 neighbor, and if the link to that neighbor is up or down.
Interface ID
Interface ID and IPv6 address of the router.
Transit area 2
The transit area through which the virtual link is formed.
via interface ATM3/0
The interface through which the virtual link is formed.
Cost of using 1
The cost of reaching the OSPFv3 neighbor through the virtual link.
Transmit Delay is 1 sec
The transmit delay (in seconds) on the virtual link.
State POINT_TO_POINT
The state of the OSPFv3 neighbor.
Timer intervals...
The various timer intervals configured for the link.
Hello due in 0:00:06
When the next hello is expected from the neighbor.
The following sample output from the show ospfv3 virtual-links command has two virtual links. One is protected by authentication, and the other is protected by encryption. <<This is show ipv6 ospf virtual-links output--should it be modified/replaced?>>
Router# show ospfv3 virtual-links Virtual Link OSPFv3_VL1 to router 10.2.0.1 is up Interface ID 69, IPv6 address 2001:0DB8:11:0:A8BB:CCFF:FE00:6A00 Run as demand circuit DoNotAge LSA allowed. Transit area 1, via interface Serial12/0, Cost of using 64 NULL encryption SHA-1 auth SPI 3944, secure socket UP (errors: 0) Transmit Delay is 1 sec, State POINT_TO_POINT, Timer intervals configured, Hello 2, Dead 10, Wait 40, Retransmit 5 Adjacency State FULL (Hello suppressed) Index 1/2/4, retransmission queue length 0, number of retransmission 1 First 0x0(0)/0x0(0)/0x0(0) Next 0x0(0)/0x0(0)/0x0(0) Last retransmission scan length is 1, maximum is 1 Last retransmission scan time is 0 msec, maximum is 0 msec Virtual Link OSPFv3_VL0 to router 10.1.0.1 is up Interface ID 67, IPv6 address 2001:0DB8:13:0:A8BB:CCFF:FE00:6700 Run as demand circuit DoNotAge LSA allowed. Transit area 1, via interface Serial11/0, Cost of using 128 MD5 authentication SPI 940, secure socket UP (errors: 0) Transmit Delay is 1 sec, State POINT_TO_POINT, Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5 Adjacency State FULL (Hello suppressed) Index 1/1/3, retransmission queue length 0, number of retransmission 1 First 0x0(0)/0x0(0)/0x0(0) Next 0x0(0)/0x0(0)/0x0(0) Last retransmission scan length is 1, maximum is 1 Last retransmission scan time is 0 msec, maximum is 0 msecshow platform 6rd tunnel-endpt
To display IPv6 rapid deployment (6RD) information about a tunnel end point, use the show platform 6rd tunnel-endpt command in the Privileged EXEC mode.
Syntax Description
Command History
Examples
This example displays the total number of tunnel end points configured.
Device#show platform 6rd tunnel-endpt 6rd End-pt in use: 1 6rd End-pt in use: 2 6rd End-pt in use: 3 6rd End-pt in use: 4 6rd End-pt in use: 5 6rd End-pt in use: 6 6rd End-pt in use: 7 6rd End-pt in use: 8 6rd End-pt in use: 9 --More-- 6rd End-pt in use: 108 6rd End-pt in use: 109 6rd End-pt in use: 110 Total 6rd End-pt in use: 110Related Commands
Command
Description
show tunnel 6rd destination
Translates a 6RD prefix to the corresponding IPv4 destination.
tunnel 6rd prefix
Specifies the common IPv6 prefix on IPv6 6RD tunnels.
tunnel mode ipv6ip
Configures a static IPv6 tunnel interface.
tunnel source
Sets the source address for a tunnel interface.
show platform software ipv6-multicast
To display information about the platform software for IPv6 multicast, use the show platform software ipv6-multicastcommand in privileged EXEC mode.
show platform software ipv6-multicast { acl-exception | acl-table | capability | connected | shared-adjacencies | statistics | summary }
Syntax Description
acl-exception
Displays the IPv6-multicast entries that were switched in the software due to ACL exceptions.
acl-table
Displays the IPv6-multicast access list (ACL) request table entries.
capability
Displays the hardware capabilities.
connected
Displays the IPv6-multicast subnet/connected hardware entries.
shared-adjacencies
Displays the IPv6-multicast shared adjacencies.
statistics
Displays the internal software-based statistics.
summary
Displays the IPv6-multicast hardware-shortcut count.
Command History
Examples
This example shows how to display the IPv6-hardware capabilities:
Router# show platform software ipv6-multicast capability Hardware switching for ipv6 is Enabled (S,G) forwarding for ipv6 supported using Netflow (*,G) bridging for ipv6 is supported using Fib Directly-connected entries for IPv6 is supported using ACL-TCAM. Current System HW Replication Mode : Egress Audo-detection of Replication Mode : ON Slot Replication-Capability Replication-Mode 2 Egress Egress 5 Egress EgressThis example shows how to display the IPv6-multicast subnet/connected-hardware entries:
Router# show platform software ipv6-multicast connected IPv6 Multicast Subnet entries Flags : H - Installed in ACL-TCAM X - Not installed in ACL-TCAM due to label-full exception Interface: Vlan40 [ H ] S:40::1 G:FF00:: S:0:5000::2 G:FF00:: S:5000::2 G:FF00:: Interface: Vlan30 [ H ] S:30::1 G:FF00:: Interface: Vlan20 [ H ] S:20::1 G:FF00:: Interface: Vlan10 [ H ] S:10::1 G:FF00::This example shows how to display the IPv6-multicast shared adjacencies:
Router# show platform software ipv6-multicast shared-adjacencies ---- SLOT [7] ---- Shared IPv6 Mcast Adjacencies Index Packets Bytes ----------------------------- ------ ------------- ------------------ Subnet bridge adjacency 0x7F802 0 0 Control bridge adjacency 0x7 0 0 StarG_M bridge adjacency 0x8 0 0 S_G bridge adjacency 0x9 0 0 Default drop adjacency 0xA 0 0 StarG (spt == INF) adjacency 0xB 0 0 StarG (spt != INF) adjacency 0xC 0 0This example shows how to display the IPv6-multicast statistics information:
Router# show platform software ipv6-multicast statistics IPv6 Multicast HW-switching Status : Enabled IPv6 Multicast (*,G) HW-switching Status : Disabled IPv6 Multicast Subnet-entries Status : Enabled Default MFIB IPv6-table : 0x5108F770 (S,G,C) flowmask index : 3 (*,G,C) flowmask index : 65535 General Counters --------------------------------------------------+------+ Mfib-hw-entries count 0 Mfib-add count 4 Mfib-modify count 2 Mfib-delete count 2 Mfib-NP-entries count 0 Mfib-D-entries count 0 Mfib-IC-entries count 0 Error Counters --------------------------------------------------+------+ ACL flowmask err count 0 ACL TCAM exptn count 0 ACL renable count 0 Idb Null error 0This example shows how to display the IPv6-multicast hardware shortcut count:
Router# show platform software ipv6-multicast summary IPv6 Multicast Netflow SC summary on Slot[7]: Shortcut Type Shortcut count ---------------------------+-------------- (S, G) 0 IPv6 Multicast FIB SC summary on Slot[7]: Shortcut Type Shortcut count ---------------------------+-------------- (*, G/128) 0 (*, G/m) 0show platform software vpn
show tunnel 6rd
To display IPv6 rapid deployment (6RD) information about a tunnel, use the show tunnel 6rd command in privileged EXEC mode.
Usage Guidelines
The show tunnel 6rd command displays 6RD-related information on a tunnel. If an interface is not specified, information about all the 6RD tunnels on the router is displayed.
Examples
The following is sample output from the show tunnel 6rd command:
Router# show tunnel 6rd tunnel 1 show tunnel 6rd tunnel 1 Interface Tunnel1: Tunnel Source: 10.1.2.1 6RD: Operational, V6 Prefix: 2001:B000::/32 V4 Prefix, Length: 16, Value: 10.1.0.0 V4 Suffix, Length: 8, Value: 0.0.0.1 General Prefix: 2001:B000:200::/40The table below describes the significant fields shown in the display.
Table 43 show tunnel 6rd Field Descriptions Field
Description
Interface Tunnel1:
The specified tunnel interface and number.
Tunnel Source: 10.1.2.1
The source address for the tunnel interface.
6RD: Operational
6RD is enabled on the router.
V6 Prefix: 2001:B000::/32
The common IPv6 prefix on IPv6 6RD tunnels.
V4 Common Prefix Length: 16, Value: 10.1.0.0
The prefix length and value of the IPv4 transport address common to all the 6RD routers in a domain.
V4 Common Suffix Length: 8, Value: 0.0.0.1
The suffix length and value of the IPv4 transport address common to all the 6RD routers in a domain.
show tunnel 6rd destination
To translate an IPv6 rapid deployment (6RD) prefix to the corresponding IPv4 destination, use the show tunnel 6rd destinationcommand in privileged EXEC mode.
Usage Guidelines
The show tunnel 6rd destination command is used to translate a 6RD prefix to the corresponding IPv4 destination. The IPv4 destination address is displayed in the command output.
show tunnel 6rd prefix
To translate an IPv4 destination address to the corresponding IPv6 6RD prefix, use the show tunnel 6rd prefix command in privileged EXEC mode.
Usage Guidelines
The show tunnel 6rd prefix command translates an IPv4 destination address to the corresponding IPv6 6RD prefix. The command output displays the 6rd prefix.
sip address
To configure a Session Initiation Protocol (SIP) server IPv6 address to be returned in the SIP server’s IPv6 address list option to clients, use the sip addresscommand in DHCP for IPv6 pool configuration mode. To disable this feature, use the no form of this command.
Command History
Release
Modification
12.3(14)T
This command was introduced.
12.2(18)SXE
This command was integrated into Cisco IOS Release 12.2(18)SXE.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
Cisco IOS XE Release 2.5
This command was updated. It was integrated into Cisco IOS XE Release 2.5.
Usage Guidelines
For the Dynamic Host Configuration Protocol (DHCP) for IPv6 server to obtain prefixes from RADIUS servers, the user must also configure the authorization, authentication, and accounting (AAA) client and PPP on the router. For information on how to configure the AAA client and PPP, see the "Implementing ADSL and Deploying Dial Access for IPv6" module.
The sip address command configures a SIP server IPv6 address to be returned in the SIP server’s IPv6 address list option to clients. To configure multiple SIP server addresses, issue this command multiple times. The new addresses will not overwrite old ones.
sip domain-name
To configure a Session Initiation Protocol (SIP) server domain name to be returned in the SIP server’s domain name list option to clients, use the sip domain-namecommand in DHCP for IPv6 pool configuration mode. To disable this feature, use the no form of this command.
Command History
Release
Modification
12.3(14)T
This command was introduced.
12.2(18)SXE
This command was integrated into Cisco IOS Release 12.2(18)SXE.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
Cisco IOS XE Release 2.5
This command was updated. It was integrated into Cisco IOS XE Release 2.5.
Usage Guidelines
In order for the Dynamic Host Configuration Protocol (DHCP) for IPv6 server to obtain prefixes from RADIUS servers, the user must also configure the authorization, authentication, and accounting (AAA) client and PPP on the router. For information on how to configure the AAA client and PPP, see the "Implementing ADSL and Deploying Dial Access for IPv6" module.
The sip domain-name command configures a SIP server domain name to be returned in the SIP server’s domain name list option to clients. To configure multiple SIP server domain names, issue this command multiple times. The new domain names will not overwrite old ones.