To display information about any defined IPv6 address pools, use the
showipv6localpoolcommand in privileged EXEC mode.
showipv6localpool
[ poolname [cache] ]
Syntax Description
poolname
(Optional) User-defined name for the local address pool.
cache
(Optional) Indicates that cache statistics are to be included in the output display
Command Modes
Privileged EXEC
Command History
Release
Modification
12.2(13)T
This command was introduced.
Usage Guidelines
If you omit the
poolnameargument, the command displays a generic list of all defined address pools and the IP addresses that belong to them. If you specify the
poolname argument, the command displays detailed information about that pool.
Examples
The following command displays IPv6 prefix pool information, which includes cache statistics:
Router# show ipv6 local pool mypool
Prefix is 2001:0DB8::/29 assign /64 prefix
2 entries in use, 254 available, 0 rejected
0 entries cached, 1000 maximum
User Prefix Interface
joe 3FFE:FFFF:A::/64 Vi1
john 3FFE:FFFF:A:1::/64 Vi2
The following command displays IPv6 prefix pool information for all prefix pools:
Router# show ipv6 local pool
Pool Prefix Free In use
mypool 2001:0DB8::/29 65516 20
myrouter#
myrouter# show ipv6 local pool mypool
Prefix is 1234::/48 assign /64 prefix
20 entries in use, 65516 available, 0 rejected
0 entries cached, 1000 maximum
User Prefix Interface
user1-72b 1234::/64 Vi1.21
user1-72b 1234:0:0:1::/64 Vi1.22
user1-72b 1234:0:0:2::/64 Vi1.23
user1-72b 1234:0:0:3::/64 Vi1.24
user1-72b 1234:0:0:4::/64 Vi1.25
user1-72b 1234:0:0:5::/64 Vi1.26
user1-72b 1234:0:0:6::/64 Vi1.27
user1-72b 1234:0:0:7::/64 Vi1.28
user1-72b 1234:0:0:8::/64 Vi1.29
user1-72b 1234:0:0:9::/64 Vi1.30
user1-72b 1234:0:0:A::/64 Vi1.31
user1-72b 1234:0:0:B::/64 Vi1.32
user1-72b 1234:0:0:C::/64 Vi1.33
user1-72b 1234:0:0:D::/64 Vi1.34
user1-72b 1234:0:0:E::/64 Vi1.35
user1-72b 1234:0:0:F::/64 Vi1.36
user1-72b 1234:0:0:10::/64 Vi1.37
user1-72b 1234:0:0:11::/64 Vi1.38
user1-72b 1234:0:0:12::/64 Vi1.39
user1-72b 1234:0:0:13::/64 Vi1.40
The table below describes the significant fields shown in the displays.
Table 1 show ipv6 local pool Field Descriptions
Field
Description
Scope
The type of access.
Pool
Pool and group names and associations, if created.
Begin
The first IP address in the defined range of addresses in this pool.
End
The last IP address in the defined range of addresses in this pool.
Free
The number of addresses available.
InUse
The number of addresses in use.
Related Commands
Command
Description
ipv6localpool
Configures a local pool of IPv6 addresses to be used when a remote peer connects to a point-to-point interface.
show ipv6 mfib
To display the
forwarding entries and interfaces in the IPv6 Multicast Forwarding Information
Base (MFIB), use the
showipv6mfib command in user EXEC or privileged EXEC mode.
Cisco 3660 Series Routers,
Cisco 10000 Series Routers, and Catalyst 6500 Series Routers
showipv6mfib
[ vrfvrf-name ]
[ all | linkscope | verbose | interface | status | summary ]
Syntax Description
vrfvrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
all
(Optional) Displays all forwarding entries and interfaces in the IPv6 MFIB.
linkscope
(Optional) Displays the link-local groups.
verbose
(Optional) Provides additional information, such as the MAC encapsulation
header and platform-specific information.
ipv6-prefix
(Optional) The IPv6 network assigned to the interface. The default IPv6 prefix
is 128.
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.
group-address-name
(Optional) IPv6 address or name of the multicast group.
source-address-name
(Optional) IPv6 address or name of the multicast group.
interface
(Optional) Interface settings and status.
status
(Optional) General settings and status.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(2)T
This
command was introduced.
12.2(18)S
This
command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The
link-local
keyword was added.
12.2(18)SXE
Support
for this command was added for the Supervisor Engine 720.
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.
12.3(4)T
The
link-local
keyword was added.
12.3(7)T
The
ipv6-prefix
and
prefix-length
arguments were added.
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.
15.0(1)M
This
command was modified. The
link-local
keyword was changed to
linkscope.
Cisco
IOS Release 15.1(1)S
This
command was modified. New counters were added to the output to show (*,G/m) and
the total number of unique groups in the database.
Cisco
IOS XE Release 3.2S
This
command was modified. New counters were added to the output to show (*,G/m) and
the total number of unique groups in the database.
15.1(4)M
The
vrfvrf-name
keyword and argument were added.
15.4(1)S
This command was implemented on the Cisco ASR 901 series
routers.
Usage Guidelines
Use the
showipv6mfib command to display MFIB entries; and
forwarding interfaces, and their traffic statistics. This command can be
enabled on virtual IP (VIP) if the router is operating in distributed mode.
A forwarding
entry in the MFIB has flags that determine the default forwarding and signaling
behavior to use for packets matching the entry. The entry also has
per-interface flags that further specify the forwarding behavior for packets
received or forwarded on specific interfaces. The table below describes the
MFIB forwarding entries and interface flags.
Table 2 MFIB Entries and Interface
Flags
Flag
Description
F
Forward--Data is forwarded out of this interface.
A
Accept--Data received on this interface is accepted for forwarding.
IC
Internal
copy--Deliver to the router a copy of the packets received or forwarded on this
interface.
NS
Negate
signal--Reverse the default entry signaling behavior for packets received on
this interface.
DP
Do not
preserve--When signaling the reception of a packet on this interface, do not
preserve a copy of it (discard it instead).
SP
Signal
present--The reception of a packet on this interface was just signaled.
S
Signal--By default, signal the reception of packets matching this entry.
C
Perform
directly connected check for packets matching this entry. Signal the reception
if packets were originated by a directly connected source.
Examples
The following
example displays the forwarding entries and interfaces in the MFIB. The router
is configured for fast switching, and it has a receiver joined to FF05::1 on
Ethernet1/1 and a source (2001::1:1:20) sending on Ethernet1/2:
Router# show ipv6 mfib
IP Multicast Forwarding Information Base
Entry Flags: C - Directly Connected, S - Signal, IA - Inherit A flag,
AR - Activity Required, D - Drop
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts: Total/RPF failed/Other drops
Interface Flags: A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
SP - Signal Present
Interface Counts: FS Pkt Count/PS Pkt Count
(*,FF00::/8) Flags: C
Forwarding: 0/0/0/0, Other: 0/0/0
Tunnel0 Flags: NS
(*,FF00::/15) Flags: D
Forwarding: 0/0/0/0, Other: 0/0/0
(*,FF05::1) Flags: C
Forwarding: 2/0/100/0, Other: 0/0/0
Tunnel0 Flags: A NS
Ethernet1/1 Flags: F NS
Pkts: 0/2
(2001::1:1:200,FF05::1) Flags:
Forwarding: 5/0/100/0, Other: 0/0/0
Ethernet1/2 Flags: A
Ethernet1/1 Flags: F NS
Pkts: 3/2
(*,FF10::/15) Flags: D
Forwarding: 0/0/0/0, Other: 0/0/0
The table below
describes the significant fields shown in the display.
Table 3 show ipv6 mfib Field
Descriptions
Field
Description
Entry
Flags
Information about the entry.
Forwarding Counts
Statistics on the packets that are received from and forwarded to at least one
interface.
Pkt
Count/
Total
number of packets received and forwarded since the creation of the multicast
forwarding state to which this counter applies.
Pkts per
second/
Number of
packets received and forwarded per second.
Avg Pkt
Size/
Total
number of bytes divided by the total number of packets for this multicast
forwarding state. There is no direct display for the total number of bytes. You
can calculate the total number of bytes by multiplying the average packet size
by the packet count.
Kbits per
second
Bytes per
second divided by packets per second divided by 1000.
Other
counts:
Statistics on the received packets. These counters include statistics about the
packets received and forwarded and packets received but not forwarded.
Interface
Flags:
Information about the interface.
Interface
Counts:
Interface
statistics.
The following
example shows forwarding entries and interfaces in the MFIB, with a group
address of FF03:1::1 specified:
Router# show ipv6 mfib FF03:1::1
IP Multicast Forwarding Information Base
Entry Flags:C - Directly Connected, S - Signal, IA - Inherit A
flag,
AR - Activity Required, D - Drop
Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kbits per
second
Other counts:Total/RPF failed/Other drops
Interface Flags:A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
SP - Signal Present
Interface Counts:FS Pkt Count/PS Pkt Count
*,FF03:1::1) Flags:C
Forwarding:0/0/0/0, Other:0/0/0
Tunnel1 Flags:A NS
GigabitEthernet5/0.25 Flags:F NS
Pkts:0/0
GigabitEthernet5/0.24 Flags:F NS
Pkts:0/0
(5002:1::2,FF03:1::1) Flags:
Forwarding:71505/0/50/0, Other:42/0/42
GigabitEthernet5/0 Flags:A
GigabitEthernet5/0.19 Flags:F NS
Pkts:239/24
GigabitEthernet5/0.20 Flags:F NS
Pkts:239/24
GigabitEthernet5/0.21 Flags:F NS
Pkts:238/24
.
.
.
GigabitEthernet5/0.16 Flags:F NS
Pkts:71628/24
The following
example shows forwarding entries and interfaces in the MFIB, with a group
address of FF03:1::1 and a source address of 5002:1::2 specified:
Router# show ipv6 mfib FF03:1::1 5002:1::2
IP Multicast Forwarding Information Base
Entry Flags:C - Directly Connected, S - Signal, IA - Inherit A flag,
AR - Activity Required, D - Drop
Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts:Total/RPF failed/Other drops
Interface Flags:A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
SP - Signal Present
Interface Counts:FS Pkt Count/PS Pkt Count
(5002:1::2,FF03:1::1) Flags:
Forwarding:71505/0/50/0, Other:42/0/42
GigabitEthernet5/0 Flags:A
GigabitEthernet5/0.19 Flags:F NS
Pkts:239/24
GigabitEthernet5/0.20 Flags:F NS
Pkts:239/24
.
.
.
GigabitEthernet5/0.16 Flags:F NS
Pkts:71628/24
The following
example shows forwarding entries and interfaces in the MFIB, with a group
address of FF03:1::1 and a default prefix of 128:
Router# show ipv6 mfib FF03:1::1/128
IP Multicast Forwarding Information Base
Entry Flags:C - Directly Connected, S - Signal, IA - Inherit A flag,
AR - Activity Required, D - Drop
Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts:Total/RPF failed/Other drops
Interface Flags:A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
SP - Signal Present
Interface Counts:FS Pkt Count/PS Pkt Count
(*,FF03:1::1) Flags:C
Forwarding:0/0/0/0, Other:0/0/0
Tunnel1 Flags:A NS
GigabitEthernet5/0.25 Flags:F NS
Pkts:0/0
GigabitEthernet5/0.24 Flags:F NS
Pkts:0/0
.
.
.
GigabitEthernet5/0.16 Flags:F NS
Pkts:0/0
The following
example shows forwarding entries and interfaces in the MFIB, with a group
address of FFE0 and a prefix of 15:
Router# show ipv6 mfib FFE0::/15
IP Multicast Forwarding Information Base
Entry Flags:C - Directly Connected, S - Signal, IA - Inherit A flag,
AR - Activity Required, D - Drop
Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts:Total/RPF failed/Other drops
Interface Flags:A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
SP - Signal Present
Interface Counts:FS Pkt Count/PS Pkt Count
(*,FFE0::/15) Flags:D
Forwarding:0/0/0/0, Other:0/0/0
The following
example shows output of the
showipv6mfib command used with the
verbose
keyword. It shows forwarding entries and interfaces in the MFIB and additional
information such as the MAC encapsulation header and platform-specific
information.
Router# show ipv6 mfib ff33::1:1 verbose
IP Multicast Forwarding Information Base
Entry Flags: C - Directly Connected, S - Signal, IA - Inherit A flag,
AR - Activity Required, K - Keepalive
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kbits per second
Other counts: Total/RPF failed/Other drops
Platform per slot HW-Forwarding Counts: Pkt Count/Byte Count
Platform flags: HF - Forwarding entry,HB - Bridge entry,HD - NonRPF Drop entry,
NP - Not platform switchable,RPL - RPF-ltl linkage,
MCG - Metset change,ERR - S/w Error Flag,RTY - In RetryQ,
LP - L3 pending,MP - Met pending,AP - ACL pending
Interface Flags: A - Accept, F - Forward, NS - Negate Signalling
IC - Internal Copy, NP - Not platform switched
SP - Signal Present
Interface Counts: Distributed FS Pkt Count/FS Pkt Count/PS Pkt Count
(10::2,FF33::1:1) Flags: K
RP Forwarding: 0/0/0/0, Other: 0/0/0
LC Forwarding: 0/0/0/0, Other: 0/0/0
HW Forwd: 0/0/0/0, Other: NA/NA/NA
Slot 6: HW Forwarding: 0/0, Platform Flags: HF RPL
Slot 1: HW Forwarding: 0/0, Platform Flags: HF RPL
Vlan10 Flags: A
Vlan30 Flags: F NS
Pkts: 0/0/0 MAC: 33330001000100D0FFFE180086DD
The table below
describes the fields shown in the display.
Table 4 show ipv6 mfib verbose
Field Descriptions
Field
Description
Platform
flags
Information about the platform.
Platform
per slot HW-Forwarding Counts
Total
number of packets per bytes forwarded.
Related Commands
Command
Description
showipv6mfibactive
Displays the rate at which active sources are sending to multicast groups.
showipv6mfibcount
Displays summary traffic statistics from the MFIB about the group and source.
showipv6mfibinterface
Displays information about IPv6 multicast-enabled interfaces and their
forwarding status.
showipv6mfibstatus
Displays the general MFIB configuration and operational status.
showipv6mfibsummary
Displays summary information about the number of IPv6 MFIB entries (including
link-local groups) and interfaces.
show ipv6 mfib active
To display the rate at which active sources are sending to multicast groups, use the
showipv6mfibactive command in user EXEC or privileged EXEC mode.
showipv6mfib
[ vrfvrf-name ]
[ all | linkscope ]
active [kbps]
Syntax Description
vrfvrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
all
(Optional) Displays a summary of traffic statistics from the IPv6 MFIB about multicast sources sending to both linkscope (reserved) and nonlinkscope (nonreserved) groups.
linkscope
(Optional) Displays a summary of traffic statistics from the IPv6 MFIB about multicast sources sending to linkscope (reserved) groups.
kbps
(Optional) Kilobits per second.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The
link-local keyword was added.
12.3(4)T
The
link-local keyword was added.
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.
15.0(1)M
This command was modified. The
link-local keyword was changed to
linkscope.
Cisco IOS Release 15.1(1)S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
Cisco IOS XE Release 3.2S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
15.1(4)M
The
vrfvrf-name keyword and argument were added.
Usage Guidelines
Use the
showipv6mfibactive command to display MFIB entries actively used to forward packets. In many cases, it is useful to provide the optional
kbps argument to limit the set of entries displayed to the ones that are forwarding an amount of traffic larger or equal to the amount set by the
kbps argument.
Examples
The following example displays statistics on the rate at which active IP multicast sources are sending information. The router is switching traffic from 2001::1:1:200 to FF05::1:
Router# show ipv6 mfib active
Active IPv6 Multicast Sources - sending >= 4 kbps
Group: FF05::1
Source: 2001::1:1:200
Rate: 20 pps/16 kbps(1sec), 0 kbps(last 128 sec)
The table below describes the significant fields shown in the display.
Table 5 show ipv6 mfib active Field Descriptions
Field
Description
Group:
Summary information about counters for (*, G) and the range of (S, G) states for one particular group G. The following RP-tree: and Source: output fields contain information about the individual states belonging to this group.
Note
For Source Specific Multicast (PIM-SSM) range groups, the Group: displays are statistical. All SSM range (S, G) states are individual, unrelated SSM channels.
Rate...kbps
Bytes per second divided by packets per second divided by 1000. On an IP multicast fast-switching platform, the number of packets per second is the number of packets during the last second. Other platforms may use a different approach to calculate this number. Refer to the platform documentation for more information.
show ipv6 mfib count
To display summary traffic statistics from the IPv6 Multicast Forwarding Information Base (MFIB) about multicast sources and groups, use the showipv6mfibcount command in user EXEC or privileged EXEC mode.
showipv6mfib
[ vrfvrf-name ]
[ all | linkscope ]
count
Syntax Description
vrfvrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
all
(Optional) Displays a summary of traffic statistics from the IPv6 MFIB about multicast sources sending to both linkscope (reserved) and nonlinkscope (nonreserved) groups.
linkscope
(Optional) Displays a summary of traffic statistics from the IPv6 MFIB about multicast sources sending to linkscope (reserved) groups.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The link-local keyword was added.
12.3(4)T
The link-local keyword was added.
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 integrated into Cisco IOS XE Release 2.1.
15.0(1)M
This command was modified. The link-local keyword was changed to linkscope.
Cisco IOS Release 15.1(1)S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
Cisco IOS XE Release 3.2S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
15.1(4)M
The vrfvrf-name keyword and argument were added.
Usage Guidelines
Use the showipv6mfibcount command to display the average packet size and data rate in kilobits per seconds.
Examples
The following example displays a summary of traffic statistics from the IPv6 MFIB about multicast sources sending to both reserved and nonreserved groups:
Router# show ipv6 mfib all count
show ipv6 mfib global
To display information from the IPv6 Multicast Forwarding Information Base (MFIB) global table, use the showipv6mfibactive command in user EXEC or privileged EXEC mode.
showipv6mfib
[ vrfvrf-name ]
[ all | linkscope ]
global
Syntax Description
vrfvrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
all
(Optional) Displays information in the IPv6 MFIB global table for both linkscope (reserved) and nonlinkscope (nonreserved) groups.
linkscope
(Optional) Displays information in the IPv6 MFIB global table for linkscope groups.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The link-local keyword was added.
12.3(4)T
The link-local keyword was added.
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.
15.0(1)M
This command was modified. The link-local keyword was changed to linkscope.
Cisco IOS Release 15.1(1)S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
Cisco IOS XE Release 3.2S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
15.1(4)M
The vrfvrf-name keyword and argument were added.
Usage Guidelines
If no optional keywords or arguments are entered, global table information in the IPv6 MFIB associated with nonlinkscope multicast groups are displayed.
Examples
The following example enables you to display IPv6 MFIB global table information:
Router# show ipv6 mfib global
show ipv6 mfib instance
To display information about an IPv6 Multicast Forwarding Information Base (MFIB) table instance, use the showipv6mfibinstancecommand in user EXEC or privileged EXEC mode.
showipv6mfib
[ vrfvrf-name ]
[ all | linkscope ]
instance
Syntax Description
vrfvrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
all
(Optional) Displays all information about a.
linkscope
(Optional) Displays a summary of traffic statistics from the IPv6 MFIB about multicast sources sending to linkscope (reserved) groups.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The link-local keyword was added.
12.3(4)T
The link-local keyword was added.
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.
15.0(1)M
This command was modified. The link-local keyword was changed to linkscope.
Cisco IOS Release 15.1(1)S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
Cisco IOS XE Release 3.2S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
15.1(4)M
The vrfvrf-name keyword and argument were added.
Examples
The following example enables you to display IPv6 MFIB instance information:
Router# show ipv6 mfib instance
show ipv6 mfib
interface
To display
information about IPv6 multicast-enabled interfaces and their forwarding
status, use the
showipv6mfibinterface command in user EXEC or privileged EXEC
mode.
showipv6mfibinterface
Syntax Description
This command has no
arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(2)T
This
command was introduced.
12.2(18)S
This
command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
This
command was integrated into Cisco IOS Release 12.0(26)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.
15.4(1)S
This command was implemented on the Cisco ASR 901 series
routers.
Usage Guidelines
The
showipv6mfibinterface command displays the Multicast
Forwarding Information Base (MFIB) interfaces and in what switching mode each
MFIB has been configured.
Examples
The following
example displays information about IPv6 multicast-enabled interfaces and their
forwarding status. The router is configured for fast switching.
Router# show ipv6 mfib interface
IPv6 Multicast Forwarding (MFIB) status:
Configuration Status: enabled
Operational Status: running
MFIB interface status CEF-based output
[configured,available]
Ethernet1/1 up [yes ,yes ]
Ethernet1/2 up [yes ,? ]
Tunnel0 up [yes ,? ]
Tunnel1 up [yes ,? ]
The table below
describes the significant fields shown in the display.
Table 6 show ipv6 mfib interface
Field Descriptions
Field
Description
MFIB
interface
Specifies
the MFIB interface.
Status
Specifies
the status of the MFIB interface.
CEF-based
output
Provides
information on the Cisco Express Forwarding-based output of the MFIB interface.
show ipv6 mfib route
To display the forwarding entries and interfaces in the IPv6 Multicast Forwarding Information Base (MFIB) without packet header information and forwarding counters, use the showipv6mfibroutecommand in user EXEC or privileged EXEC mode.
showipv6mfib
[ vrfvrf-name ]
[ all | linkscope ]
route
Syntax Description
vrfvrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
all
(Optional) Displays the forwarding entries and interfaces in the IPv6 MFIB for both linkscope (reserved) and nonlinkscope (nonreserved) groups.
linkscope
(Optional) Displays the forwarding entries and interfaces in the IPv6 MFIB for linkscope (reserved) groups.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The link-local keyword was added.
12.3(4)T
The link-local keyword was added.
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.
15.0(1)M
This command was modified. The link-local keyword was changed to linkscope.
Cisco IOS Release 15.1(1)S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
Cisco IOS XE Release 3.2S
This command was modified. New counters were added to the output to show (*,G/m) and the total number of unique groups in the database.
15.1(4)M
The vrfvrf-name keyword and argument were added.
Examples
The following example enables you to display IPv6 MFIB instance information:
Router# show ipv6 mfib instance
show ipv6 mfib status
To display the
general Multicast Forwarding Information Base (MFIB) configuration and
operational status, use the
showipv6mfibstatus command in user EXEC or privileged EXEC
mode.
showipv6mfibstatus
Syntax Description
This command has no
arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
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(28)SB
This
command was integrated into Cisco IOS Release 12.2(28)SB.
Cisco IOS
XE Release 2.1
This
command was introduced on Cisco ASR 1000 Series Routers.
15.4(1)S
This command was implemented on the Cisco ASR 901 series
routers.
Usage Guidelines
Use the
showipv6mfibstatus to find such information as whether or not
MFIB is enabled and running.
Examples
The following
example displays MFIB information:
Router# show ipv6 mfib status
IPv6 Multicast Forwarding (MFIB) status:
Configuration Status: enabled
Operational Status: not running
Notes: MFIB not running because multicast routing is disabled
The table below
describes the significant fields shown in the displays.
Table 7 show ipv6 mfib status Field
Descriptions
Field
Description
Configuration status: enabled
MFIB is
enabled on the device.
Operational
status: not running
Although
MFIB is enabled on the device, it is not running.
Notes:
Information
about MFIB configuration and operational status.
show ipv6 mfib
summary
To display summary
information about the number of IPv6 Multicast Forwarding Information Base
(MFIB) entries (including link-local groups) and interfaces, use the
showipv6mfibsummary command in user EXEC or privileged EXEC
mode.
showipv6mfib
[ vrfvrf-name ]
summary
Syntax Description
vrfvrf-name
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(2)T
This
command was introduced.
12.2(18)S
This
command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
This
command was integrated into Cisco IOS Release 12.0(26)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
vrfvrf-name
keyword and argument were added.
15.4(1)S
This command was implemented on the Cisco ASR 901 series
routers.
Usage Guidelines
The
showipv6mfibsummary command shows the IP multicast routing
table in abbreviated form. The command displays only the number of MFIB
entries, the number of (*, G) and (S, G) entries, and the number of MFIB
interfaces specified.
The
showipv6mfibsummary command counts all entries, including
link-local entries.
Examples
The following
example displays summary information about the number of IPv6 MFIB entries and
interfaces:
Router# show ipv6 mfib summary
IPv6 MFIB summary:
54 total entries [1 (S,G), 7 (*,G), 46 (*,G/m)]
17 total MFIB interfaces
The table below
describes the significant fields shown in the display.
Table 8 show ipv6 mfib summary
Field Descriptions
Field
Description
54 total
entries
Total
number of MFIB entries, including the number of (*, G) and (S, G) entries.
17 total
MFIB interfaces
Sum of
all the MFIB interfaces in all the MFIB entries.
show ipv6 mld groups
To display the
multicast groups that are directly connected to the router and that were
learned through Multicast Listener Discovery (MLD), use the
showipv6mldgroups command in user EXEC or privileged EXEC
mode.
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
link-local
(Optional) Displays the link-local groups.
group-name |
group-address
(Optional) IPv6 address or name of the multicast group.
interface-typeinterface-number
(Optional) Interface type and number.
detail
(Optional) Displays detailed information about individual sources.
explicit
(Optional) Displays information about the hosts being explicitly tracked on
each interface for each group.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(2)T
This
command was introduced.
12.2(18)S
This
command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
Thelink-local keyword was added.
12.3(4)T
Thelink-local keyword was added.
12.3(7)T
The
explicit
keyword was added.
12.2(25)S
The
link-local and
explicit
keywords were added.
12.4(2)T
Information about MLD state limits was added to the command output.
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 introduced on Cisco ASR 1000 Series Routers.
15.1(4)M
The
vrfvrf-name
keyword and argument were added.
15.0(2)SE
This
command was integrated into Cisco IOS Release 15.0(2)SE.
15.4(1)S
This command was implemented on the Cisco ASR 901 series
routers.
Usage Guidelines
If you omit all
optional arguments, the
showipv6mldgroups command displays by group address and
interface type and number all directly connected multicast groups, including
link-local groups (where the
link-local
keyword is not available) used.
Examples
The following is
sample output from the
showipv6mldgroups command. It shows all of the groups joined
by Fast Ethernet interface 2/1, including link-local groups used by network
protocols.
Router# show ipv6 mld groups FastEthernet 2/1
MLD Connected Group Membership
Group Address Interface Uptime Expires
FF02::2 FastEthernet2/1 3d18h never
FF02::D FastEthernet2/1 3d18h never
FF02::16 FastEthernet2/1 3d18h never
FF02::1:FF00:1 FastEthernet2/1 3d18h 00:00:27
FF02::1:FF00:79 FastEthernet2/1 3d18h never
FF02::1:FF23:83C2 FastEthernet2/1 3d18h 00:00:22
FF02::1:FFAF:2C39 FastEthernet2/1 3d18h never
FF06:7777::1 FastEthernet2/1 3d18h 00:00:26
The following is
sample output from the
showipv6mldgroups command using the
detail
keyword:
Router# show ipv6 mld groups detail
Interface: Ethernet2/1/1
Group: FF33::1:1:1
Uptime: 00:00:11
Router mode: INCLUDE
Host mode: INCLUDE
Last reporter: FE80::250:54FF:FE60:3B14
Group source list:
Source Address Uptime Expires Fwd Flags
2004:4::6 00:00:11 00:04:08 Yes Remote Ac 4
The following is
sample output from the
showipv6mldgroupscommand using the
explicit
keyword:
Router# show ipv6 mld groups explicit
Ethernet1/0, FF05::1
Up:00:43:11 EXCLUDE(0/1) Exp:00:03:17
Host Address Uptime Expires
FE80::A8BB:CCFF:FE00:800 00:43:11 00:03:17
Mode:EXCLUDE
Ethernet1/0, FF05::6
Up:00:42:22 INCLUDE(1/0) Exp:not used
Host Address Uptime Expires
FE80::A8BB:CCFF:FE00:800 00:42:22 00:03:17
Mode:INCLUDE
300::1
300::2
300::3
Ethernet1/0 - Interface
ff05::1 - Group address
Up:Uptime for the group
EXCLUDE/INCLUDE - The mode the group is in on the router.
(0/1) (1/0) - (Number of hosts in INCLUDE mode/Number of hosts in EXCLUDE moe)
Exp:Expiry time for the group.
FE80::A8BB:CCFF:FE00:800 - Host ipv6 address.
00:43:11 - Uptime for the host.
00:03:17 - Expiry time for the host
Mode:INCLUDE/EXCLUDE - Mode the Host is operating in.
300::1, 300::2, 300::3 - Sources that the host has joined in the above specified mode.
The table below
describes the significant fields shown in the display.
Table 9 show ipv6 mld groups Field
Descriptions
Field
Description
Group
Address
Address
of the multicast group.
Interface
Interface
through which the group is reachable.
Uptime
How long
(in hours, minutes, and seconds) this multicast group has been known.
Expires
How long
(in hours, minutes, and seconds) until the entry is removed from the MLD groups
table.
The
expiration timer shows "never" if the router itself has joined the group, and
the expiration timer shows "not used" when the router mode of the group is
INCLUDE. In this situation, the expiration timers on the source entries are
used.
Last
reporter:
Last host
to report being a member of the multicast group.
Flags Ac
4
Flags
counted toward the MLD state limits configured.
Related Commands
Command
Description
ipv6mldquery-interval
Configures the frequency at which the Cisco IOS software sends MLD host-query
messages.
show ipv6 mld groups
summary
To display the
number of (*, G) and (S, G) membership reports present in the Multicast
Listener Discovery (MLD) cache, use the
showipv6mldgroupssummary command in user EXEC or privileged EXEC
mode.
showipv6mldgroupssummary
Syntax Description
This command has no
arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(2)T
This
command was introduced.
12.2(18)S
This
command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
This
command was integrated into Cisco IOS Release 12.0(26)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
This
command was introduced on Cisco ASR 1000 Series Routers.
15.0(2)SE
This
command was integrated into Cisco IOS Release 15.0(2)SE.
15.4(1)S
This command was implemented on the Cisco ASR 901 series
routers.
Usage Guidelines
The
showipv6mldgroupssummary command displays the number of directly
connected multicast groups (including link-local groups).
Examples
The following is
sample output from the
showipv6mldgroupssummarycommand:
Router# show ipv6 mld groups summary
MLD Route Summary
No. of (*,G) routes = 5
No. of (S,G) routes = 0
The table below
describes the significant fields shown in the display.
Table 10 show ipv6 mld groups summary
Field Descriptions
Field
Description
No. of
(*,G) routes = 5
Displays
the number of groups present in the MLD cache.
No. of
(S,G) routes = 0
Displays
the number of include and exclude mode sources present in the MLD cache.
show ipv6 mld host-proxy
To display IPv6 MLD host proxy information, use the
showipv6mldhost-proxy command in user EXEC or privileged EXEC mode.
showipv6mldhost-proxy
[ interface-typeinterface-number ]
[ group [group-address] ]
Syntax Description
interface-typeinterface-number
(Optional) Interface type and number.
group
(Optional) Displays a list of group entries for which the specified interface is acting as a proxy interface.
group-address
(Optional) Specified group.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
15.1(2)T
This command was introduced.
Usage Guidelines
The show ipv6 mld host-proxy command displays MLD proxy information. When this command is used with theinterface-typeinterface-numberarguments, interface details such as interface state, IPv6 address, MLD state, etc., are displayed. If an interface is not specified, the
showipv6mldhost-proxy command displays all active proxy interfaces on the router.
The show ipv6 mld host-proxy command when used with the
interface-typeinterface-numberarguments and the
group keyword displays information about group entries for which interface is acting as a proxy interface. If the
group-address argument is specified, it display the group information for specified group.
Examples
The following example displays IPv6 MLD proxy information for the Ethernet 0/0 interface:
Router# show ipv6 mld host-proxy Ethernet0/0
Ethernet0/0 is up, line protocol is up
Internet address is FE80::34/64
MLD is enabled on interface
MLD querying router is FE80::12, Version: MLDv2
Current MLD host version is 2
MLD max query response time is 10 seconds
Number of MLD Query sent on interface : 10
Number of MLD Query received on interface : 20
Number of MLDv1 report sent : 5
Number of MLDv2 report sent : 10
Number of MLDv1 leave sent : 0
Number of MLDv2 leave sent : 1
The table below describes the significant fields shown in the display.
Table 11 show ipv6 mld host-proxy Field Descriptions
Field
Description
Ethernet0/0 is up, line protocol is up
State of the specified interface.
Internet address is FE80::34/64
IPv6 address of the specified interface.
MLD is enabled on interface
State of MLD on the interface, whether enabled or disabled.
MLD querying router is FE80::12, Version: MLDv2
IPv6 address and MLD version of the querying router.
Current MLD host version is 2
Configured MLD host version.
MLD max query response time is 10 seconds
Maximum allowed response time for the query.
Number of MLD Query sent on interface: 10
Number of MLD queries sent from the interface.
Number of MLD Query received on interface: 20
Number of MLD queries received on the interface.
Number of MLDv1 report sent : 5
Number of MLDv1 membership reports sent.
Number of MLDv2 report sent : 10
Number of MLDv2 membership reports sent.
Number of MLDv1 leave sent : 0
Number of MLDv1 leave reports sent.
Number of MLDv2 leave sent : 1
Number of MLDv2 leave reports sent.
The following example provides information about a group entry for the Ethernet 0/0 proxy interface:
Router# show ipv6 mld host-proxy Ethernet0/0 group
Group: FF5E::12
Uptime: 00:00:07
Group mode: INCLUDE
Version MLDv2
Group source list:
Source Address Uptime
5000::2 00:00:07
2000::2 00:01:15
Group: FF7E::21
Uptime: 00:02:07
Group mode: EXCLUDE
Version MLDv2
Group source list: Empty
The table below describes the significant fields shown in the display.
Table 12 show ipv6 mld host-proxy Field Descriptions
Field
Description
Group: FF5E::12
The IPv6 address of the group.
Uptime: 00:00:07
The length of time the group has been active.
Group mode: INCLUDE
The group mode.
Version MLDv2
The MLD version on the proxy interface.
Group source list:
Information on the group source list.
Related Commands
Command
Description
ipv6mldhost-proxy
Enables the MLD proxy feature.
ipv6mldhost-proxyinterface
Enables the MLD proxy feature on a specified interface on an RP.
show ipv6 mld
interface
To display
multicast-related information about an interface, use the
showipv6mldinterface command in user EXEC or privileged EXEC
mode.
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
typenumber
(Optional) Interface type and number.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(2)T
This
command was introduced.
12.2(18)S
This
command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
This
command was integrated into Cisco IOS Release 12.0(26)S.
12.4(2)T
Information about MLD state limits was added to the command output.
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 introduced on Cisco ASR 1000 Series Routers.
15.1(4)M
The
vrfvrf-name
keyword and argument were added.
15.0(2)SE
This
command was integrated into Cisco IOS Release 15.0(2)SE.
15.4(1)S
This command was implemented on the Cisco ASR 901 series
routers.
Usage Guidelines
If you omit the
optional
type
and
number arguments, the
showipv6mldinterface command displays information about all
interfaces.
Examples
The following is
sample output from the
showipv6mldinterface command for Ethernet interface 2/1/1:
Router# show ipv6 mld interface Ethernet 2/1/1
Global State Limit : 2 active out of 2 max
Loopback0 is administratively down, line protocol is down
Internet address is ::/0
.
.
.
Ethernet2/1/1 is up, line protocol is up
Internet address is FE80::260:3EFF:FE86:5649/10
MLD is enabled on interface
Current MLD version is 2
MLD query interval is 125 seconds
MLD querier timeout is 255 seconds
MLD max query response time is 10 seconds
Last member query response interval is 1 seconds
Interface State Limit : 2 active out of 3 max
State Limit permit access list:
MLD activity: 83 joins, 63 leaves
MLD querying router is FE80::260:3EFF:FE86:5649 (this system)
The table below
describes the significant fields shown in the display.
Table 13 show ipv6 mld interface
Field Descriptions
Field
Description
Global
State Limit: 2 active out of 2 max
Two
globally configured MLD states are active.
Ethernet2/1/1 is up, line protocol is up
Interface
type, number, and status.
Internet
address is...
Internet
address of the interface and subnet mask being applied to the interface.
MLD is
enabled in interface
Indicates
whether Multicast Listener Discovery (MLD) has been enabled on the interface
with the
ipv6multicast-routingcommand.
Current
MLD version is 2
The
current MLD version.
MLD query
interval is 125 seconds
Interval
(in seconds) at which the Cisco IOS software sends MLD query messages, as
specified with the
ipv6mldquery-intervalcommand.
MLD
querier timeout is 255 seconds
The
length of time (in seconds) before the router takes over as the querier for the
interface, as specified with the
ipv6mldquery-timeoutcommand.
MLD max
query response time is 10 seconds
The
length of time (in seconds) that hosts have to answer an MLD Query message
before the router deletes their group, as specified with the
ipv6mldquery-max-response-time command.
Last
member query response interval is 1 seconds
Used to
calculate the maximum response code inserted in group and source-specific
query. Also used to tune the "leave latency" of the link. A lower value results
in reduced time to detect the last member leaving the group.
Interface
State Limit : 2 active out of 3 max
Two out
of three configured interface states are active.
State
Limit permit access list: change
Activity
for the state permit access list.
MLD
activity: 83 joins, 63 leaves
Number of
groups joins and leaves that have been received.
MLD
querying router is FE80::260:3EFF:FE86:5649 (this system)
IPv6
address of the querying router.
Related Commands
Command
Description
ipv6mldjoin-group
Configures MLD reporting for a specified group and source.
ipv6mldquery-interval
Configures the frequency at which the Cisco IOS software sends MLD host-query
messages.
show ipv6 mld snooping
To display Multicast Listener Discovery version 2 (MLDv2) snooping information, use the
showipv6mldsnooping command in privileged EXEC mode.
(Optional) Provides information about the mobile node’s current location.
address
(Optional) Current address of the mobile node.
home-address
(Optional) IPv6 address is assigned to the mobile node within its home subnet prefix on its home link.
interface-typeinterface-number
(Optional) Interface type and number.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(14)T
This command was introduced.
12.4(11)T
Command output was updated to display the tunnel interface and the tunnel end point details.
Usage Guidelines
The
showipv6mobilebinding command displays details of all bindings that match all search criteria. If no optional keywords or arguments are specified, all bindings are displayed.
Examples
The following example displays information about the binding cache:
Router# show ipv6 mobile binding
Mobile IPv6 Binding Cache Entries:
2001:1::8
via care-of address 2001:2::1
home-agent 2001:1::2
state ACTIVE, sequence 1, flags AHrlK
lifetime:remaining 1023 (secs), granted 1024 (secs), requested 1024 (secs)
interface Ethernet1/3
0 tunneled, 0 reversed tunneled
Selection matched 1 bindings
The following example displays information about the tunnel interface and the tunnel end point details:
The table below describes the significant fields shown in the displays.
Table 16 show ipv6 mobile binding Field Descriptions
Field
Description
2001:1::8
Home IPv6 address of the mobile node.
via care-of address 2001:2::1
Care-of address of the mobile node.
home-agent 2001:1::2
Home-agent address
state ACTIVE, sequence 1, flags AHrlK
State: State of the mobile binding.
Sequence number.
Flags: Services requested by mobile node. The mobile node requests these services by setting bits in the registration request. Uppercase characters denote bit set.
Remaining: The time remaining until the registration is expired. It has the same initial value as lifetime granted, and is counted down by the home agent.
Granted: The lifetime granted to the mobile node for this registration. Number of seconds in parentheses.
Requested: The lifetime requested by the mobile node for this registration. Number of seconds in parentheses.
interface Ethernet1/3
The interface being used.
0 tunneled, 0 reversed tunneled
Number of bindings tunneled and reverse tunneled.
Selection matched 1 bindings
Total number of mobility bindings that were matched.
Tunnel Interface
The tunnel interface being used.
Tunnel Source
Tunnel source IPv6 address.
Tunnel Destionation
Tunnel destination IPv6 address.
Input
Number of packets in.
Output
Number of packets out.
Related Commands
binding
Configures binding options for the Mobile IPv6 home agent feature in home-agent configuration mode.
ipv6mobilehome-agent(interfaceconfiguration)
Initializes and starts the Mobile IPv6 home agent on a specific interface.
show ipv6 mobile globals
To display global Mobile IPv6 parameters, use the
showipv6mobileglobalscommand in user EXEC or privileged EXEC mode.
showipv6mobileglobals
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(14)T
This command was introduced.
12.4(11)T
Command output was updated to show the Mobile IPv6 tunnel information on the home agent.
Usage Guidelines
The
showipv6mobileglobals command displays the values of all global configuration parameters associated with Mobile IPv6 and lists the interfaces on which home agent functionality is operating.
Examples
In the following example, the
showipv6mobileglobals command displays the binding parameters:
Router# show ipv6 mobile globals
Mobile IPv6 Global Settings:
1 Home Agent service on following interfaces:
Ethernet1/2
Bindings:
Maximum number is unlimited.
1 bindings are in use
1 bindings peak
Binding lifetime permitted is 262140 seconds
Recommended refresh time is 300 seconds
In the following example, the
showipv6mobileglobals command displays the Mobile IPv6 tunnel information parameters on the home agent:
Router# show ipv6 mobile globals
Tunnel Encapsulation Mode: IPv6/IPv6
ICMP Unreachable for tunnel interfaces <enabled/disabled>
Tunnel Path MTU Discovery: <enabled/disabled>
The table below describes the significant fields shown in the displays.
Table 17 show ipv6 mobile globals Field Descriptions
Field
Description
1 Home Agent service on following interfaces: Ethernet1/2
Interface on which the home agent service is enabled.
Bindings:
Information on bindings.
Maximum number is unlimited.
The amount of bindings allowed on the home agent.
1 bindings are in use.
How many bindings are being used.
1 bindings peak
The maximum number of bindings that have been used in this session.
Binding lifetime permitted is 262140 seconds
The configured binding lifetime.
Recommended refresh time is 300 seconds
The configured refresh time.
Tunnel Encapsulation Mode:
Tunnel encapsulation type.
ICMP Unreachable for tunnel interfaces
Enabled or disabled.
Tunnel Path MTU Discovery:
Enabled or disabled.
Related Commands
Command
Description
address(IPv6mobilerouter)
Specifies the home address of the IPv6 mobile node.
binding
Configures binding options for the Mobile IPv6 home agent feature in home agent configuration mode.
ipv6mobilehome-agent(globalconfiguration)
Enters home agent configuration mode.
hostgroup
Creates a host configuration in Mobile IPv6.
show ipv6 mobile home-agents
To display local and discovered neighboring home agents, use the
showipv6mobilehome-agentscommand in user EXEC or privileged EXEC mode.
(Optional) IPv6 address prefix of the care-of address or the home address of neighboring agents.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
Modification
12.3(14)T
This command was introduced.
Usage Guidelines
The
showipv6mobilehome-agentscommand displays information about local and discovered neighboring home agents. You can choose to display information on a specified interface using the optional
interface-type and
interface-number arguments, and you can further choose to display only those addresses that match the optional
prefix argument.
If no argument or keyword is entered, the home agent list for each interface on which the router is acting as a home agent is displayed. Each list is displayed in decreasing order of preference.
Examples
In the following example, the fact that no neighboring mobile home agents were found is displayed:
Router# show ipv6 mobile home-agents
Home Agent information for Ethernet1/3
Configured:
FE80::20B:BFFF:FE33:501F
preference 0 lifetime 1800
global address 2001:0DB8:1::2/64
Discovered Home Agents:
FE80::4, last update 0 min
preference 0 lifetime 1800
global address 2001:0DB8:1::4/64
The table below describes the significant fields shown in the display.
Table 18 show ipv6 mobile home-agents Field Descriptions
Field
Description
Home Agent information for Ethernet1/3
The interface on which the home agent is configured.
Configured: FE80::20B:BFFF:FE33:501F
The IPv6 address on which the home agent is configured.
preference 0 lifetime 1800
The configured home agent preference and lifetime.
global address 2001:0DB8:1::2/64
The configured global address.
Discovered Home Agents:
FE80::4, last update 0 min
preference 0 lifetime 1800
global address 2001:0DB8:1::4/64
The address and configuration information about discovered home agents.
Related Commands
Command
Description
binding
Configures binding options for the Mobile IPv6 home agent feature in home agent configuration mode.
show ipv6 mobile host groups
To display information about IPv6 mobile host groups, use the
showipv6mobilehostgroupscommand in user EXEC or privileged EXEC mode.
showipv6mobilehostgroups [profile-name]
Syntax Description
profile-name
(Optional) Host group profile name.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.4(11)T
This command was introduced.
Usage Guidelines
The
showipv6mobilehostgroupscommand lists the configuration of all configured host groups. To display information about a specific host group, use the optional
profile-name keyword.
Examples
In the following example, information about a host group named localhost is displayed:
Router# show ipv6 mobile host groups
Mobile IPv6 Host Configuration
Mobile Host List:
Host Group Name: localhost
NAI: sai@cisco.com
Address: CAB:C0:CA5A:CA5A::CA5A
Security Association Entry:
SPI: (Hex: 501) (Decimal Int: 1281)
Key Format: Hex Key: baba
Algorithm: HMAC_SHA1
Replay Protection: On Replay Window: 6 secs
The table below describes the significant fields shown in the display.
Table 19 show ipv6 mobile host groups Field Descriptions
Field
Description
Host Group Name: localhost
Configuration information about the host group named localhost to follow.
NAI: sai@cisco.com
Network access identifier (NAI) for localhost host group.
Address: 2001:0DB8:CA5A:CA5A::CA5A
IPv6 address for localhost host group.
Security Association Entry:
Security association for the host group named localhost to follow.
SPI: (Hex: 501) (Decimal Int: 1281)
SPI for localhost.
Key Format: Hex Key: baba
Key format and name for localhost.
Algorithm: HMAC_SHA1
Authentication algorithm.
Replay Protection: On Replay Window: 6 secs
Replay protection is activated, and the number of seconds that the router uses for replay protection is 6.
Related Commands
Command
Description
address(MobileIPv6)
Specifies the home address of the IPv6 mobile node.
authentication(MobileIPv6)
Specifies the authentication properties for the IPv6 mobile node by creating either a unidirectional or bidirectional SPI.
hostgroup
Creates a host group configuration in IPv6 Mobile.
nai
Specifies the NAI for the IPv6 mobile node.
showipv6mobileglobals
Displays global Mobile IPv6 parameters.
show ipv6 mobile router
To display configuration information and monitoring statistics about the IPv6 mobile router, use the
showipv6mobileroutercommand in user EXEC or privileged EXEC mode.
showipv6mobilerouter
[ running-config | status ]
Syntax Description
running-config
(Optional) Displays IPv6 mobile router running configuration information.
status
(Optional) Displays IPv6 mobile router status information.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.4(20)T
This command was introduced.
Usage Guidelines
The
showipv6mobilerouterdisplay includes the mobile router configuration information such as the home address and network mask, home agent, and registration settings, and operational information such as status, tunnel interface, active foreign agent, and care-of address.
Examples
The following is sample output from the
showipv6mobilerouter command:
Router# show ipv6 mobile router
Mobile Reverse Tunnel established
---------------------------------
using Nemo Basic mode
Home Agent: 2001:DB8:2000::2001
CareOf Address: 2001:DB8::A8BB:CCFF:FE01:F611
Attachment Router: FE80::A8BB:CCFF:FE01:F511
Attachment Interface: Ethernet1/1
Home Network: 2001:DB8:2000:0:FDFF:FFFF:FFFF:FFFE/64
Home Address: 2001:DB8:2000::1111
The table below describes the significant fields shown in the display.
Table 20 show ipv6 mobile router Field Descriptions
Field
Description
Mobile Reverse Tunnel established
If reverse tunnel is enabled or disabled, this information is displayed or absent, respectively.
using Nemo Basic mode
Type of mode being used by the mobile router.
Home Agent:
Home agent with which the mobile router registers. The mobile router registers only to the home agent with the highest priority when multiple addresses are configured.
CareOf Address:
Care-of address used by the registered mobile router.
Attachment Router:
Attachment point in the foreign network.
Attachment Interface:
Attachment interface used in the foreign network.
Home Network:
IPv6 address of the mobile router home network.
Home Address:
IPv6 address of the mobile router.
show ipv6 mobile traffic
To display information about binding updates received and binding acknowledgments sent, use the
showipv6mobiletrafficcommand in user EXEC or privileged EXEC mode.
showipv6mobiletraffic
Syntax Description
The command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(14)T
This command was introduced.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
Usage Guidelines
The show ipv6 mobile traffic command displays counters and other information associated with Mobile IPv6. The following counters are maintained globally across all interfaces:
Dynamic home agent discovery requests received
Binding updates received
Home agent registrations received
Successful home agent registrations
Home agent deregistrations (lifetime of zero or care-of address equals home address)
Home agent registrations rejected, defined in the status as sent in the binding acknowledgment with a separate counter for every reason code defined in the table below, and generated by the implementation
Time of last registration acceptance
Time of last registration denial
Status code for last registration denial
Binding updates discarded through rate limiting
Binding acknowledgments discarded through rate limiting
Binding cache high-water mark, maintained and displayed for registrations
The table below shows possible binding status values and reasons for use of these values.
Table 21 show ipv6 mobile traffic Field Descriptions
Reason Code
Binding Status Value
0
Binding update accepted
128
Reason unspecified
129
Administratively prohibited
130
Insufficient resources
131
Home registration not supported
132
Not home subnet
133
Not home agent for this mobile node
134
Duplicate address detection (DAD) failed
135
Sequence number out of window
Examples
In the following example, information about IPv6 Mobile traffic is displayed:
Router# show ipv6 mobile traffic
MIPv6 statistics:
Rcvd: 6477 total
0 truncated, 0 format errors
0 checksum errors
Binding Updates received:6477
0 no HA option, 0 BU's length
0 options' length, 0 invalid CoA
Sent: 6477 generated
Binding Acknowledgements sent:6477
6477 accepted (0 prefix discovery required)
0 reason unspecified, 0 admin prohibited
0 insufficient resources, 0 home reg not supported
0 not home subnet, 0 not home agent for node
0 DAD failed, 0 sequence number
Binding Errors sent:0
0 no binding, 0 unknown MH
Home Agent Traffic:
6477 registrations, 0 deregistrations
00:00:23 since last accepted HA registration
unknown time since last failed HA registration
unknown last failed registration code
Traffic forwarded:
0 tunneled, 0 reversed tunneled
Dynamic Home Agent Address Discovery:
1 requests received, 1 replies sent
Mobile Prefix Discovery:
0 solicitations received, 0 advertisements sent
The table below describes the significant fields shown in the display.
Table 22 show ipv6 mobile traffic Field Descriptions
Field
Description
MIPv6 statistics:
Information about binding updates received by the mobility agent.
Sent:
Information about binding acknowledgments sent by the mobility agent.
Binding Errors sent:
Information about binding errors sent by the mobility agent.
Home Agent Traffic: 6477 registrations, 0 deregistrations
Number of registrations and deregistrations accepted by the home agent.
00:00:23 since last accepted HA registration
Length of time since the last registration was accepted by the home agent.
unknown time since last failed HA registration
Length of time since the last failed registration by the home agent.
unknown last failed registration code
Reason why the registration failed, if it did fail.
Dynamic Home Agent Address Discovery:
Number of dynamic home agent discovery requests received and replies sent.
Mobile Prefix Discovery:
Number of mobile prefix discovery solicitations received and advertisements sent by the home agent.
Related Commands
Command
Description
binding
Configures binding options for the Mobile IPv6 home agent feature in home agent configuration mode.
show ipv6 mobile tunnels
To list the Mobile IPv6 tunnels on the home agent, use the
showipv6mobiletunnelscommand in user EXEC or privileged EXEC mode.
The
showipv6mobiletunnels command displays active tunnels on the Mobile IPv6 home agent. Use the
summary keyword to view a summary of all tunnels on the home agent, or the
tunnelif-number
keyword and argument to view information on a specific tunnel.
Examples
The following example displays information about the Mobile IPv6 tunnels on the home agent:
Router# show ipv6 mobile tunnels
Tunnel1:
Source: 2001:0DB1:1:1
Destination: 2001:0DB1:2:1
Encapsulation Mode: IPv6/IPv6
Egress Interface: Ethernet 1/0
Switching Mode: Process
Keep-Alive: Not Supported
Path MTU Discovery: Enabled
Input: 20 packets, 1200 bytes, 0 drops
Output: 20 packets, 1200 bytes, 0 drops
NEMO Options: Not Supported
The table below describes the significant fields shown in the display.
Table 23 show ipv6 mobile tunnels Field Descriptions
Field
Description
Source:
Source IPv6 tunnel address.
Destination:
Destination IPv6 tunnel address.
Encapsulation Mode:
Tunnel encapsulation type.
Egress interface:
Interface used for egress (outgoing packets).
Switching mode:
Type of switching mode used.
Keep-alive:
Supported or not supported.
Path MTU Discovery:
Enabled or disabled.
Input:
Number of packets in.
Output:
Number of packets out.
NEMO Options:
Supported or not supported.
Related Commands
Command
Description
showipv6mobilehome-agent
Displays local and discovered neighboring home agents.
show ipv6 mrib client
To display
information about the clients of the Multicast Routing Information Base (MRIB),
use the
showipv6mribclient command in user EXEC or privileged EXEC
mode.
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
filter
(Optional) Displays information about MRIB flags that each client owns and that
each client is interested in.
name
(Optional) The name of a multicast routing protocol that acts as a client of
MRIB, such as Multicast Listener Discovery (MLD) and Protocol Independent
Multicast (PIM).
client-name:client-id
The name
and ID of a multicast routing protocol that acts as a client of MRIB, such as
MLD and PIM. The colon is required.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(2)T
This
command was introduced.
12.2(18)S
This
command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
This
command was integrated into Cisco IOS Release 12.0(26)S.
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 introduced on Cisco ASR 1000 Series Routers.
15.1(4)M
The
vrfvrf-name
keyword and argument were added.
15.0(2)SE
This
command was integrated into Cisco IOS Release 15.0(2)SE.
15.4(1)S
This command was implemented on the Cisco ASR 901 series
routers.
Usage Guidelines
Use the
filter
keyword to display information about the MRIB flags each client owns and the
flags in which each client is interested.
Examples
The following is
sample output from the
showipv6mribclientcommand:
Router# show ipv6 mrib client
IP MRIB client-connections
igmp:145 (connection id 0)
pim:146 (connection id 1)
mfib ipv6:3 (connection id 2)
slot 3 mfib ipv6 rp agent:16 (connection id 3)
slot 1 mfib ipv6 rp agent:16 (connection id 4)
slot 0 mfib ipv6 rp agent:16 (connection id 5)
slot 4 mfib ipv6 rp agent:16 (connection id 6)
slot 2 mfib ipv6 rp agent:16 (connection id 7)
The table below
describes the significant fields shown in the display.
Table 24 show ipv6 mrib client Field
Descriptions
Field
Description
igmp:145
(connection id 0) pim:146 (connection id 1) mfib ipv6:3 (connection id 2) mfib
ipv6 rp agent:16 (connection id 3)
Client ID
(client name:process ID)
show ipv6 mrib route
To display
Multicast Routing Information Base (MRIB) route information, use the
showipv6mribroute command in user EXEC or privileged EXEC
mode.
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
link-local
(Optional) Displays the link-local groups.
summary
(Optional) Displays the number of MRIB entries (including link-local groups)
and interfaces present in the MRIB table.
sourceaddress-or-name
(Optional) IPv6 address or name of the source.
*
(Optional) Displays all MRIB route information.
groupnameor-address
(Optional) IPv6 address or name of the multicast group.
prefix-length
(Optional) IPv6 prefix length.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release
Modification
12.3(2)T
This
command was introduced.
12.2(18)S
This
command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The
link-local
keyword was added.
12.3(4)T
The
link-local
keyword was added.
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 introduced on Cisco ASR 1000 Series Routers.
15.1(4)M
The
vrfvrf-name
keyword and argument were added.
15.0(2)SE
This
command was integrated into Cisco IOS Release 15.0(2)SE.
15.4(1)S
This command was implemented on the Cisco ASR 901 series
routers.
Usage Guidelines
All entries are
created by various clients of the MRIB, such as Multicast Listener Discovery
(MLD), Protocol Independent Multicast (PIM), and Multicast Forwarding
Information Base (MFIB). The flags on each entry or interface serve as a
communication mechanism between various clients of the MRIB. The entries reveal
how PIM sends register messages for new sources and the action taken.
The
summary
keyword shows the count of all entries, including link-local entries.
The interface
flags are described in the table below.
Table 25 Description of Interface
Flags
Flag
Description
F
Forward--Data is forwarded out of this interface
A
Accept--Data received on this interface is accepted for forwarding
IC
Internal
copy
NS
Negate
signal
DP
Do not
preserve
SP
Signal
present
II
Internal
interest
ID
Internal
uninterest
LI
Local
interest
LD
Local
uninterest
C
Perform
directly connected check
Special entries
in the MRIB indicate exceptions from the normal behavior. For example, no
signaling or notification is necessary for arriving data packets that match any
of the special group ranges. The special group ranges are as follows:
Undefined
scope (FFX0::/16)
Node local
groups (FFX1::/16)
Link-local
groups (FFX2::/16)
Source
Specific Multicast (SSM) groups (FF3X::/32).
For all the
remaining (usually sparse-mode) IPv6 multicast groups, a directly connected
check is performed and the PIM notified if a directly connected source arrives.
This procedure is how PIM sends register messages for new sources.
Examples
The following is
sample output from the
showipv6mribroutecommand using the
summary
keyword:
Router# show ipv6 mrib route summary
MRIB Route-DB Summary
No. of (*,G) routes = 52
No. of (S,G) routes = 0
No. of Route x Interfaces (RxI) = 10
The table below
describes the significant fields shown in the display.
Table 26 show ipv6 mrib route Field
Descriptions
Field
Description
No. of
(*, G) routes
Number of
shared tree routes in the MRIB.
No. of
(S, G) routes
Number of
source tree routes in the MRIB.
No. of
Route x Interfaces (RxI)
Sum of
all the interfaces on each MRIB route entry.
show ipv6 mroute
To display the
information in the PIM topology table in a format similar to the
showipmroute command, use the
showipv6mroute command in user EXEC or privileged EXEC
mode.
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
link-local
(Optional) Displays the link-local groups.
group-name |
group-address
(Optional) IPv6 address or name of the multicast group.
source-address |
source-name
(Optional) IPv6 address or name of the source.
summary
(Optional) Displays a one-line, abbreviated summary of each entry in the IPv6
multicast routing table.
count
(Optional) Displays statistics from the Multicast Forwarding Information Base
(MFIB) about the group and source, including number of packets, packets per
second, average packet size, and bytes per second.
Command Default
The
showipv6mroute command displays all groups and sources.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(2)T
This
command was introduced.
12.2(18)S
This
command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The
link-local
keyword was added.
12.3(4)T
The
link-local
keyword was added.
12.2(25)S
The
link-local
keyword was added.
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
vrfvrf-name
keyword and argument were added.
15.0(2)SE
This
command was integrated into Cisco IOS Release 15.0(2)SE.
15.4(1)S
This command was implemented on the Cisco ASR 901 series
routers.
Usage Guidelines
The IPv6
multicast implementation does not have a separate mroute table. For this
reason, theshowipv6mroute command enables you to display the
information in the PIM topology table in a format similar to the
showipmroute command.
If you omit all
optional arguments and keywords, the
showipv6mroute command displays all the entries in the PIM
topology table (except link-local groups where the
link-local
keyword is available).
The Cisco IOS
software populates the PIM topology table by creating (S,G) and (*,G) entries
based on PIM protocol messages, MLD reports, and traffic. The asterisk (*)
refers to all source addresses, the "S" refers to a single source address, and
the "G" is the destination multicast group address. In creating (S, G) entries,
the software uses the best path to that destination group found in the unicast
routing table (that is, through Reverse Path Forwarding [RPF]).
Use the
showipv6mroutecommand to display the forwarding status of
each IPv6 multicast route.
Examples
The following is
sample output from the
showipv6mroutecommand:
Router# show ipv6 mroute ff07::1
Multicast Routing Table
Flags:D - Dense, S - Sparse, B - Bidir Group, s - SSM Group,
C - Connected, L - Local, I - Received Source Specific Host Report,
P - Pruned, R - RP-bit set, F - Register flag, T - SPT-bit set,
J - Join SPT
Timers:Uptime/Expires
Interface state:Interface, State
(*, FF07::1), 00:04:45/00:02:47, RP 2001:0DB8:6::6, flags:S
Incoming interface:Tunnel5
RPF nbr:6:6:6::6
Outgoing interface list:
POS4/0, Forward, 00:04:45/00:02:47
(2001:0DB8:999::99, FF07::1), 00:02:06/00:01:23, flags:SFT
Incoming interface:POS1/0
RPF nbr:2001:0DB8:999::99
Outgoing interface list:
POS4/0, Forward, 00:02:06/00:03:27
The following is
sample output from theshowipv6mroutecommand with the
summarykeyword:
Router# show ipv6 mroute ff07::1 summary
Multicast Routing Table
Flags:D - Dense, S - Sparse, B - Bidir Group, s - SSM Group,
C - Connected, L - Local, I - Received Source Specific Host Report,
P - Pruned, R - RP-bit set, F - Register flag, T - SPT-bit set,
J - Join SPT
Timers:Uptime/Expires
Interface state:Interface, State
(*, FF07::1), 00:04:55/00:02:36, RP 2001:0DB8:6::6, OIF count:1, flags:S
(2001:0DB8:999::99, FF07::1), 00:02:17/00:01:12, OIF count:1, flags:SFT
The following is
sample output from theshowipv6mroutecommand with the
countkeyword:
Router# show ipv6 mroute ff07::1 count
IP Multicast Statistics
71 routes, 24 groups, 0.04 average sources per group
Forwarding Counts:Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per second
Other counts:Total/RPF failed/Other drops(OIF-null, rate-limit etc)
Group:FF07::1
RP-tree:
RP Forwarding:0/0/0/0, Other:0/0/0
LC Forwarding:0/0/0/0, Other:0/0/0
Source:2001:0DB8:999::99,
RP Forwarding:0/0/0/0, Other:0/0/0
LC Forwarding:0/0/0/0, Other:0/0/0
HW Forwd: 20000/0/92/0, Other:0/0/0
Tot. shown:Source count:1, pkt count:20000
The table below
describes the significant fields shown in the display.
Table 27 show ipv6 mroute Field
Descriptions
Field
Description
Flags:
Provides
information about the entry.
S--sparse. Entry is operating in sparse mode.
s--SSM group. Indicates that a multicast group is within the SSM range of IP
addresses. This flag is reset if the SSM range changes.
C--connected. A member of the multicast group is present on the directly
connected interface.
L--local. The router itself is a member of the multicast group.
I--received source specific host report. Indicates that an (S, G) entry was
created by an (S, G) report. This flag is set only on the designated router
(DR).
P--pruned. Route has been pruned. The Cisco IOS software keeps this information
so that a downstream member can join the source.
R--RP-bit set. Indicates that the (S, G) entry is pointing toward the RP. This
is typically prune state along the shared tree for a particular source.
F--register flag. Indicates that the software is registering for a multicast
source.
T--SPT-bit set. Indicates that packets have been received on the shortest path
source tree.
J--join SPT. For (*, G) entries, indicates that the rate of traffic flowing
down the shared tree is exceeding the SPT-Threshold value set for the group.
(The default SPT-Threshold setting is 0 kbps.) When the J - Join shortest path
tree (SPT) flag is set, the next (S, G) packet received down the shared tree
triggers an (S, G) join in the direction of the source, thereby causing the
router to join the source tree.
The default SPT-Threshold value of 0 kbps is used for the
group, and the J - Join SPT flag is always set on (*, G) entries and is never
cleared. The router immediately switches to the shortest path source tree when
traffic from a new source is received.
Timers:
Uptime/Expires
"Uptime"
indicates per interface how long (in hours, minutes, and seconds) the entry has
been in the IPv6 multicast routing table. "Expires" indicates per interface how
long (in hours, minutes, and seconds) until the entry will be removed from the
IPv6 multicast routing table.
Interface
state:
Indicates
the state of the incoming or outgoing interface.
Interface. Indicates the type and number of the interface listed in the
incoming or outgoing interface list.
Next-Hop. "Next-Hop" specifies the IP address of the downstream neighbor.
State/Mode. "State" indicates that packets will either be forwarded, pruned, or
null on the interface depending on whether there are restrictions due to access
lists. "Mode" indicates that the interface is operating in sparse mode.
(*,
FF07::1) and (2001:0DB8:999::99)
Entry in
the IPv6 multicast routing table. The entry consists of the IPv6 address of the
source router followed by the IPv6 address of the multicast group. An asterisk
(*) in place of the source router indicates all sources.
Entries
in the first format are referred to as (*, G) or "star comma G" entries.
Entries in the second format are referred to as (S, G) or "S comma G" entries;
(*, G) entries are used to build (S, G) entries.
RP
Address
of the RP router.
flags:
Information set by the MRIB clients on this MRIB entry.
Incoming
interface:
Expected
interface for a multicast packet from the source. If the packet is not received
on this interface, it is discarded.
RPF nbr
IP
address of the upstream router to the RP or source.
Outgoing
interface list:
Interfaces through which packets will be forwarded. For (S,G) entries, this
list will not include the interfaces inherited from the (*,G) entry.
Related Commands
Command
Description
ipv6multicast-routing
Enables
multicast routing using PIM and MLD on all IPv6-enabled interfaces of the
router and enables multicast forwarding.
showipv6mfib
Displays the forwarding entries and interfaces in the IPv6 MFIB.
show ipv6 mroute active
To display the active multicast streams on the router, use the
showipv6mrouteactivecommand in user EXEC or privileged EXEC mode.
(Optional) Specifies a virtual routing and forwarding (VRF) configuration.
link-local
(Optional) Displays the link-local groups.
group-name |
group-address
(Optional) IPv6 address or name of the multicast group.
kbps
(Optional) Displays the rate that active sources are sending to multicast groups. Active sources are those sending at the kbps value or higher. The
kbps argument defaults to 4 kbps.
Command Default
The
kbps argument defaults to 4 kbps.
Command Modes
User EXEC
Privileged EXEC
Command History
Release
Modification
12.3(2)T
This command was introduced.
12.2(18)S
This command was integrated into Cisco IOS Release 12.2(18)S.
12.0(26)S
The
link-local keyword was added.
12.3(4)T
The
link-local keyword was added.
12.2(25)S
The
link-local keyword was added.
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
vrfvrf-name keyword and argument were added.
Usage Guidelines
The
showipv6mrouteactivecommand displays active multicast streams with data rates that are greater than or equal to the kilobits per second set by the user. The command default is 4 kbps.
Examples
The following is sample output from the
showipv6mrouteactivecommand:
Router# show ipv6 mroute active
Active IPv6 Multicast Sources - sending >= 4 kbps
Group:FF05::1
Source:2001::1:1:1
Rate:11 pps/8 kbps(1sec), 8 kbps(last 8 sec)
The table below describes the significant fields shown in the display.
Table 28 show ipv6 mroute active Field Descriptions
Field
Description
Group:
Summary information about counters for (*, G) and the range of (S, G) states for one particular group G. The following RP-tree: and Source: output fields contain information about the individual states belonging to this group.
Note
For Source Specific Multicast (PIM-SSM) range groups, the Group: displays are statistical. All SSM range (S, G) states are individual, unrelated SSM channels.
Rate...kbps
Bytes per second divided by packets per second divided by 1000. On an IP multicast fast-switching platform, the number of packets per second is the number of packets during the last second. Other platforms may use a different approach to calculate this number. Please refer to the platform documentation for more information.
show ipv6 mtu
To display maximum transmission unit (MTU) cache information for IPv6 interfaces, use the
showipv6mtucommand in user EXEC or privileged EXEC mode.
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)SB
The
vrf keyword and
vrfname argument were added.
Usage Guidelines
The
vrf keyword and
vrfname argument allow you to view MTUs related to a specific VRF.
Examples
The following is sample output from the
showipv6mtucommand:
Router# show ipv6 mtu
MTU Since Destination Address
1400 00:04:21 5000:1::3
1280 00:04:50 FE80::203:A0FF:FED6:141D
The following is sample output from the
showipv6mtu command using the
vrf keyword and
vrfname argument. This example provides information about the VRF named vrfname1:
Router# show ipv6 mtu vrf vrfname1
MTU Since Source Address Destination Address
1300 00:00:04 2001:0DB8:2 2001:0DB8:7
The table below describes the significant fields shown in the display.
Table 29 show ipv6 mtu Field Descriptions
Field
Description
MTU
MTU, which was contained in the Internet Control Message Protocol (ICMP) packet-too-big message, used for the path to the destination address.
Since
Age of the entry since the ICMP packet-too-big message was received.
Destination Address
Address contained in the received ICMP packet-too-big message. Packets originating from this router to this address should be no bigger than the given MTU.
Related Commands
Command
Description
ipv6mtu
Sets the MTU size of IPv6 packets sent on an interface.