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Cisco IOS IP Application Services Command Reference
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Introduction
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carrier-delay (tracking) through forwarding-agent
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ip accounting through ip sctp authenticate
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ip tcp adjust-mss through ipv6 tcp adjust-mss
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mls ip install-threshold through platform trace runtime process forwarding-manager module wccp
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sctp through show ip sctp statistics
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show ip sockets through show sockets
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show tcp through start-forwarding agent
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threshold metric through track timer
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Index
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Feedback
Contents
sctp through show ip sctp statistics
- sctp
- show debugging
- show interface mac
- show interface precedence
- show ip accounting
- show ip casa affinities
- show ip casa oper
- show ip casa stats
- show ip casa wildcard
- show ip helper-address
- show ip icmp rate-limit
- show ip redirects
- show ip sctp association list
- show ip sctp association parameters
- show ip sctp association statistics
- show ip sctp errors
- show ip sctp instances
- show ip sctp statistics
sctp
To enter the Stream Control Transmission Protocol (SCTP) configuration, use the sctp command in IDSN User Adaptation Layer (IUA) configuration mode. To disable, use the no form of this command.
sctp [ [ t1-init milliseconds ] [ t3-rtx-min seconds ] [ t3-rtx-max milliseconds ] [ startup-rtx number ] [ assoc-rtx number ] [ path-rtx number ] ]
no sctp
Syntax Description
t1 -init milliseconds
Timer T1 initiation value in milliseconds. Valid values are from 1000 to 60000. The t1-init configurable option applies only during the creation of an SCTP instance.
t3 -rtx-min seconds
Timer T3 retransmission minimum timeout in seconds. Valid values are from 1 to 300.
t3 -rtx-max milliseconds
Timer T3 retransmission maximum timeout in milliseconds. Valid values are from 1000 to 60000.
startup -rtx number
Maximum startup retransmissions. The startup-rtx configurable option applies only during the creation of an SCTP instance. Valid values are from 2 to 20.
assoc -rtx number
Maximum association retransmissions. Valid values are from 2 to 20.
path-rtx number
Maximum path retransmissions. Valid values are from 2 to 20.
Command History
Release
Modification
12.2(15)T
This command was introduced on the Cisco 2420, Cisco 2600 series, Cisco 3600 series, and Cisco 3700 series; and Cisco AS5300, Cisco AS5350, Cisco AS5400, and Cisco AS5850 network access server (NAS) platforms.
12.4(15)T
This command was moved to the Cisco IOS IP Application Services Command Reference.
Usage Guidelines
To enter SCTP configuration commands, you must first enter IUA configuration mode and then enter sctp at the Router(config-iua)# prompt to enter SCTP configuration mode.
Examples
The following example shows how to enter IUA configuration mode:
Router# configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)# iua Router(config-iua)#The following is an example of how to set failover time (in milliseconds) between 1 and 10 seconds as part of SCTP configuration of the T1 initiation timer. This example uses the lowest failover timer value allowed (1 second):
Router(config-iua)# as as5400-3 fail-over 1000The following is an example of how to set SCTP maximum startup retransmission interval. This example uses the maximum startup retransmission interval value allowed:
Router(config-iua)# as as5400-3 sctp-startup 20The following is an example of how to configure the number of SCTP streams for this AS. This example uses the maximum SCTP streams allowed:
Router(config-iua)# as as5400-3 sctp-streams 57The following is an example of how to configure the SCTP T1 initiation timer (in milliseconds). This example uses the maximum timer value allowed:
Router(config-iua)# as as5400-3 sctp-t1init 60000show debugging
To display information about the types of debugging that are enabled for your router, use the show debugging command in privileged EXEC mode.
Command History
Release
Modification
11.1
This command was introduced.
12.3(7)T
The output of this command was enhanced to show TCP Explicit Congestion Notification (ECN) configuration.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(31)SB2
This command was integrated into Cisco IOS Release 12.2(31)SB2.
12.2SX
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
12.4(20)T
The output of this command was enhanced to show the user-group debugging configuration.
Cisco IOS XE 3.3SE
This command was implemented in Cisco IOS XE Release 3.3SE.
Examples
The following is sample output from the show debugging command. In this example, the remote host is not configured or connected.
Router# show debugging ! TCP: TCP Packet debugging is on TCP ECN debugging is on ! Router# telnet 10.1.25.234 ! Trying 10.1.25.234 ... ! 00:02:48: 10.1.25.31:11001 <---> 10.1.25.234:23 out ECN-setup SYN 00:02:48: tcp0: O CLOSED 10.1.25.234:11001 10.1.25.31:23 seq 1922220018 OPTS 4 ECE CWR SYN WIN 4128 00:02:50: 10.1.25.31:11001 <---> 10.1.25.234:23 congestion window changes 00:02:50: cwnd from 1460 to 1460, ssthresh from 65535 to 2920 00:02:50: tcp0: R SYNSENT 10.1.25.234:11001 10.1.25.31:23 seq 1922220018 OPTS 4 ECE CWR SYN WIN 4128 00:02:54: 10.1.25.31:11001 <---> 10.1.25.234:23 congestion window changes 00:02:54: cwnd from 1460 to 1460, ssthresh from 2920 to 2920 00:02:54: tcp0: R SYNSENT 10.1.25.234:11001 10.1.25.31:23 seq 1922220018 OPTS 4 ECE CWR SYN WIN 4128 00:03:02: 10.1.25.31:11001 <---> 10.1.25.234:23 congestion window changes 00:03:02: cwnd from 1460 to 1460, ssthresh from 2920 to 2920 00:03:02: tcp0: R SYNSENT 10.1.25.234:11001 10.1.25.31:23 seq 1922220018 OPTS 4 ECE CWR SYN WIN 4128 00:03:18: 10.1.25.31:11001 <---> 10.1.25.234:23 SYN with ECN disabled 00:03:18: 10.1.25.31:11001 <---> 10.1.25.234:23 congestion window changes 00:03:18: cwnd from 1460 to 1460, ssthresh from 2920 to 2920 00:03:18: tcp0: O SYNSENT 10.1.25.234:11001 10.1.25.31:23 seq 1922220018 OPTS 4 SYN WIN 4128 00:03:20: 10.1.25.31:11001 <---> 10.1.25.234:23 congestion window changes 00:03:20: cwnd from 1460 to 1460, ssthresh from 2920 to 2920 00:03:20: tcp0: R SYNSENT 10.1.25.234:11001 10.1.25.31:23 seq 1922220018 OPTS 4 SYN WIN 4128 00:03:24: 10.1.25.31:11001 <---> 10.1.25.234:23 congestion window changes 00:03:24: cwnd from 1460 to 1460, ssthresh from 2920 to 2920 00:03:24: tcp0: R SYNSENT 10.1.25.234:11001 10.1.25.31:23 seq 1922220018 OPTS 4 SYN WIN 4128 00:03:32: 10.1.25.31:11001 <---> 10.1.25.234:23 congestion window changes 00:03:32: cwnd from 1460 to 1460, ssthresh from 2920 to 2920 00:03:32: tcp0: R SYNSENT 10.1.25.234:11001 10.1.25.31:23 seq 1922220018 OPTS 4 SYN WIN 4128 !Connection timed out; remote host not respondingThe following is sample output from the show debugging command when user-group debugging is configured:
Router# show debugging ! usergroup: Usergroup Deletions debugging is on Usergroup Additions debugging is on Usergroup Database debugging is on Usergroup API debugging is on!
The following is sample output from the show debugging command when SNAP debugging is configured:
Router# show debugging Persistent variable debugging is currently All SNAP Server Debugging ON SNAP Client Debugging ON Router#The table below describes the significant fields in the output.
Table 1 show debugging Field Descriptions Field
Description
OPTS 4
Bytes of TCP expressed as a number. In this case, the bytes are 4.
ECE
Echo congestion experience.
CWR
Congestion window reduced.
SYN
Synchronize connections--Request to synchronize sequence numbers, used when a TCP connection is being opened.
WIN 4128
Advertised window size, in bytes. In this case, the bytes are 4128.
cwnd
Congestion window (cwnd)--Indicates that the window size has changed.
ssthresh
Slow-start threshold (ssthresh)--Variable used by TCP to determine whether or not to use slow-start or congestion avoidance.
usergroup
Statically defined usergroup to which source IP addresses are associated.
show interface mac
To display MAC accounting information for interfaces configured for MAC accounting, use the show interface mac command in user EXEC or privileged EXEC mode.
Syntax Description
type
(Optional) Interface type supported on your router.
number
(Optional) Port number of the interface. The syntax varies depending on the type of router. For example, on a Cisco 7500 series router the syntax is 0/0/0, where 0 represents the slot, port adapter, and port number (the slash marks are required). Refer to the appropriate hardware manual for numbering information.
Command History
Release
Modification
11.1 CC
This command was introduced.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2SX
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
Usage Guidelines
The show interface mac command displays information for one interface, when specified, or all interfaces configured for MAC accounting.
For incoming packets on the interface, the accounting statistics are gathered before the committed access rate (CAR)/distributed committed access rate (DCAR) functionality is performed on the packet. For outgoing packets on the interface, the accounting statistics are gathered after the CAR output, and before DCAR output or distributed weighted random early detection (DWRED) or distributed weighted fair queuing (DWFQ) functionality is performed on the packet.
Therefore, if DCAR or DWRED is performed on the interface and packets are dropped, the dropped packets are still counted in the show interface mac command.
The maximum number of MAC addresses that can be stored for the input and output addresses is 512 each. After the maximum is reached, subsequent MAC addresses are ignored.
To clear the accounting statistics, use the clear counter EXEC command. To configure an interface for IP accounting based on the MAC address, use the ip accounting mac-address interface configuration command.
Examples
The following is sample output from the show interface mac command:
Router# show interface ethernet 0/1/1 mac Ethernet0/1/1 Input (511 free) 0007.f618.4449(228): 4 packets, 456 bytes, last: 2684ms ago Total: 4 packets, 456 bytes Output (511 free) 0007.f618.4449(228): 4 packets, 456 bytes, last: 2692ms ago Total: 4 packets, 456 bytesThe table below describes the significant fields shown in the display.
Table 2 show interface mac Field Descriptions Field
Description
Ethernet0/1/1
Interface type and number.
Input Output
Number of packets received as input or sent as output by this interface.
0007.f618.4449(228)
MAC address of the interface from or to which this router sends or receives packets.
packets
Total number of messages that have been transmitted or received by the system.
bytes
Total number of bytes, including data and MAC encapsulation, that have been transmitted or received by the system.
last
Time, in milliseconds, since the last IP packet was transmitted or received on the specified interface.
show interface precedence
To display precedence accounting information for interfaces configured for precedence accounting, use the show interface precedence command in user EXEC or privileged EXEC mode.
Syntax Description
type
(Optional) Interface type supported on your router.
number
(Optional) Port number of the interface. The syntax varies depending on the type of router. For example, on a Cisco 7500 series router the syntax is 0/0/0, where 0 represents the slot, port adapter, and port number (the slash is required). Refer to the appropriate hardware manual for numbering information.
Command History
Release
Modification
11.1CC
This command was introduced.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2SX
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
Usage Guidelines
The show interface precedence command displays information for one interface, when specified, or all interfaces configured for IP precedence accounting.
For incoming packets on the interface, the accounting statistics are gathered before the committed access rate (CAR)/distributed committed access rate (DCAR) functionality is performed on the packet. For outgoing packets on the interface, the accounting statistics are gathered after the CAR output, and before DCAR output or distributed weighted random early detection (DWRED) or distributed weighted fair queuing (DWFQ) functionality is performed on the packet. Therefore, if DCAR or DWRED is performed on the interface and packets are dropped, the dropped packets are still counted in the show interface mac command.
To clear the accounting statistics, use the clear counter EXEC command.
To configure an interface for IP accounting based on IP precedence, use the ip accounting precedence interface configuration command.
Examples
The following is sample output from the show interface precedence command. In this example, the total packet and byte counts are calculated for the interface that receives (input) or sends (output) IP packets and sorts the results based on IP precedence.
Router# show interface ethernet 0/1/1 precedence Ethernet0/1/1 Input Precedence 0: 4 packets, 456 bytes Output Precedence 0: 4 packets, 456 bytesThe table below describes the fields shown in the display.
Table 3 show interface precedence Field Descriptions Field
Description
Ethernet0/1/1
Interface type and number.
Input Output
An interface that receives or sends IP packets and sorts the results based on IP precedence.
Precedence
Precedence value for the specified interface.
packets
Total number of messages that have been transmitted or received by the system.
bytes
Total number of bytes, including data and MAC encapsulation, that have been transmitted or received by the system.
show ip accounting
To display the active accounting or checkpointed database or to display access list violations, use the show ip accounting command in user EXEC or privileged EXEC mode.
Syntax Description
checkpoint
(Optional) Indicates that the checkpointed database should be displayed.
output-packets
(Optional) Indicates that information pertaining to packets that passed access control and were routed should be displayed. If neither the output-packets nor access-violations keyword is specified, output-packets is the default.
access-violations
(Optional) Indicates that information pertaining to packets that failed access lists and were not routed should be displayed. If neither the output-packets nor access-violations keyword is specified, output-packets is the default.
Command Default
If neither the output-packets nor access-violations keyword is specified, the show ip accounting command displays information pertaining to packets that passed access control and were routed.
Command History
Release
Modification
10.0
This command was introduced.
10.3
The output-packets and access-violations keywords were added.
12.2SX
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
Usage Guidelines
If you do not specify any keywords, the show ip accounting command displays information about the active accounting database.
To display IP access violations, you must use the access-violations keyword. If you do not specify the keyword, the command defaults to displaying the number of packets that have passed access lists and were routed.
To use this command, you must first enable IP accounting on a per-interface basis.
Examples
The following is sample output from the show ip accounting command:
Router# show ip accounting Source Destination Packets Bytes 172.16.19.40 192.168.67.20 7 306 172.16.13.55 192.168.67.20 67 2749 172.16.2.50 192.168.33.51 17 1111 172.16.2.50 172.31.2.1 5 319 172.16.2.50 172.31.1.2 463 30991 172.16.19.40 172.16.2.1 4 262 172.16.19.40 172.16.1.2 28 2552 172.16.20.2 172.16.6.100 39 2184 172.16.13.55 172.16.1.2 35 3020 172.16.19.40 192.168.33.51 1986 95091 172.16.2.50 192.168.67.20 233 14908 172.16.13.28 192.168.67.53 390 24817 172.16.13.55 192.168.33.51 214669 9806659 172.16.13.111 172.16.6.23 27739 1126607 172.16.13.44 192.168.33.51 35412 1523980 192.168.7.21 172.163.1.2 11 824 172.16.13.28 192.168.33.2 21 1762 172.16.2.166 192.168.7.130 797 141054 172.16.3.11 192.168.67.53 4 246 192.168.7.21 192.168.33.51 15696 695635 192.168.7.24 192.168.67.20 21 916 172.16.13.111 172.16.10.1 16 1137 accounting threshold exceeded for 7 packets and 433 bytesThe following is sample output from the show ip accounting access-violations command. The output pertains to packets that failed access lists and were not routed:
Router# show ip accounting access-violations Source Destination Packets Bytes ACL 172.16.19.40 192.168.67.20 7 306 77 172.16.13.55 192.168.67.20 67 2749 185 172.16.2.50 192.168.33.51 17 1111 140 172.16.2.50 172.16.2.1 5 319 140 172.16.19.40 172.16.2.1 4 262 77 Accounting data age is 41The table below describes the significant fields shown in the displays.
Table 4 show ip accounting Field Descriptions Field
Description
Source
Source address of the packet.
Destination
Destination address of the packet.
Packets
Number of packets sent from the source address to the destination address.
With the access-violations keyword, the number of packets sent from the source address to the destination address that violated an access control list (ACL).
Bytes
Sum of the total number of bytes (IP header and data) of all IP packets sent from the source address to the destination address.
With the access-violations keyword, the total number of bytes sent from the source address to the destination address that violated an ACL.
ACL
Number of the access list of the last packet sent from the source to the destination that failed an access list filter.
accounting threshold exceeded...
Data for all packets that could not be entered into the accounting table when the accounting table is full. This data is combined into a single entry.
Related Commands
Command
Description
clear ip accounting
Clears the active or checkpointed database when IP accounting is enabled.
ip accounting
Enables IP accounting on an interface.
ip accounting-list
Defines filters to control the hosts for which IP accounting information is kept.
ip accounting-threshold
Sets the maximum number of accounting entries to be created.
ip accounting-transits
Controls the number of transit records that are stored in the IP accounting database.
show ip casa affinities
To display statistics about affinities, use the show ip casa affinities command inuser EXEC or privileged EXEC mode.
show ip casa affinities [ daddr ip-address | detail | dport destination-port | protocol protocol-number | saddr ip-address | sport source-port ] [ detail | internal ]
Syntax Description
daddr ip-address
(Optional) Displays the destination address of a given TCP connection. The detail keyword displays detailed information about the destinationIP address. The internal keyword displays internal forwarding agent (FA) information.
detail
(Optional) Displays the detailed statistics.
dport destination-port
(Optional) Displays the destination port of a given TCP connection. The detail keyword displays detailed information about the destination port. The internal keyword displays internal forwarding agent (FA) information.
protocol protocol-number
(Optional) Displays the protocol of a given TCP connection. The detail keyword displays detailed information about the protocol. The internal keyword displays internal forwarding agent (FA) information.
saddr ip-address
(Optional) Displays the source address of a given TCP connection. The detail keyword displays detailed information about the source IP address. The internal keyword displays internal forwarding agent (FA) information.
sport source-port
(Optional) Displays the source port of a given TCP connection. The detail keyword displays detailed information about the source port. The internal keyword displays internal forwarding agent (FA) information.
Examples
The following is sample output of the show ip casa affinities command:
Router# show ip casa affinities Affinity Table Source Address Port Dest Address Port Prot 172.16.36.118 1118 172.16.56.13 19 TCP 172.16.56.13 19 172.16.36.118 1118 TCPThe following is sample output of the show ip casa affinities detail command:
Router# show ip casa affinities detail Affinity Table Source Address Port Dest Address Port Prot 172.44.36.118 1118 172.16.56.13 19 TCP Action Details: Interest Addr: 172.16.56.19 Interest Port: 1638 Interest Packet: 0x0102 SYN FRAG Interest Tickle: 0x0005 FIN RST Dispatch (Layer 2): YES Dispatch Address: 172.26.56.33 Source Address Port Dest Address Port Prot 172.16.56.13 19 172.16.36.118 1118 TCP Action Details: Interest Addr: 172.16.56.19 Interest Port: 1638 Interest Packet: 0x0104 RST FRAG Interest Tickle: 0x0003 FIN SYN Dispatch (Layer 2): NO Dispatch Address: 10.0.0.0The table below describes the significant fields shown in the display.
Table 5 show ip casa affinities Field Descriptions Field
Description
Source Address
Source address of a given TCP connection.
Port
Source port of a given TCP connection.
Dest Address
Destination address of a given TCP connection.
Port
Destination of a given TCP connection.
Prot
Protocol of a given TCP connection.
Action Details
Actions to be taken on a match.
Interest Addr
Services manager address that is to receive interest packets for this affinity.
Interest Port
Services manager port to which interest packets are sent.
Interest Packet
List of TCP packet types of interest to the services manager is interested in.
Interest Tickle
List of TCP packet types for which the services manager wants the entire packet.
Dispatch (Layer 2)
Layer 2 destination information will be modified.
Dispatch Address
Address of the real server.
show ip casa oper
To display operational information about the forwarding agent, use the show ip casa oper command in user EXEC or privileged EXEC mode.
Examples
The following is sample output from the show ip casa oper command:
Router# show ip casa oper Casa is Active Casa control address is 10.10.20.34/32 Casa multicast address is 239.1.1.1 Listening for wildcards on: Port:1637 Current passwd:NONE Pending passwd:NONE Passwd timeout:180 sec (Default)The table below describes the significant fields shown in the display.
Table 6 show ip casa oper Field Descriptions Field
Description
Casa is Active
The forwarding agent is active.
Casa control address
Unique address for this forwarding agent.
Casa multicast address
Services manager broadcast address.
Listening for wildcards on
Port on which the forwarding agent will listen.
Port
Services manager broadcast port.
Current passwd
Current password.
Pending passwd
Password that will override the current password.
Passwd timeout
Interval after which the pending password becomes the current password.
show ip casa stats
To display statistical information about the Forwarding Agent, use the show ip casa stats command in user EXEC or privileged EXEC mode.
Examples
The following is sample output of the show ip casa stats command:
Router# show ip casa stats Casa is active: Wildcard Stats: Wildcards: 6 Max Wildcards: 6 Wildcard Denies: 0 Wildcard Drops: 0 Pkts Throughput: 441 Bytes Throughput: 39120 Affinity Stats: Affinities: 2 Max Affinities: 2 Cache Hits: 444 Cache Misses: 0 Affinity Drops: 0 Casa Stats: Int Packet: 4 Int Tickle: 0 Casa Denies: 0 Drop Count: 0The table below describes the significant fields shown in the display.
Table 7 show ip casa stats Field Descriptions Field
Description
Casa is Active
The Forwarding Agent is active.
Wildcard Stats
Wildcard statistics.
Wildcards
Number of current wildcards.
Max Wildcards
Maximum number of wildcards since the Forwarding Agent became active.
Wildcard Denies
Protocol violations.
Wildcard Drops
Not enough memory to install wildcard.
Pkts Throughput
Number of packets passed through all wildcards.
Bytes Throughput
Number of bytes passed through all wildcards.
Affinity Stats
Affinity statistics.
Affinities
Current number of affinities.
Max Affinities
Maximum number of affinities since the forwarding agent became active.
Cache Hits
Number of packets that match wildcards and fixed affinities.
Cache Misses
Matched wildcard, missed fix.
Affinity Drops
Number of times an affinity could not be created.
Casa Stats
Forwarding agent statistics.
Int Packet
Interest packets.
Int Tickle
Interest tickles.
Casa Denies
Protocol violation.
Security Drops
Packets dropped due to password or authentication mismatch.
Drop Count
Number of messages dropped.
show ip casa wildcard
To display information about wildcard blocks, use the show ip casa wildcard command in user EXEC or privileged EXEC mode.
Examples
The following is sample output from the show ip casa wildcard command:
Router# show ip casa wildcard Source Address Source Mask Port Dest Address Dest Mask Port Prot 10.0.0.0 0.0.0.0 0 172.16.56.2 255.255.255.255 0 ICMP 10.0.0.0 0.0.0.0 0 172.16.56.2 255.255.255.255 0 TCP 10.0.0.0 0.0.0.0 0 172.16.56.13 255.255.255.255 0 ICMP 10.0.0.0 0.0.0.0 0 172.16.56.13 255.255.255.255 0 TCP 172.16.56.2 255.255.255.255 0 10.0.0.0 0.0.0.0 0 TCP 172.16.56.13 255.255.255.255 0 10.0.0.0 0.0.0.0 0 TCPThe following is sample output from the show ip casa wildcard detail command:
Router# show ip casa wildcard detail Source Address Source Mask Port Dest Address Dest Mask Port Prot 10.0.0.0 0.0.0.0 0 172.16.56.2 255.255.255.255 0 ICMP Service Manager Details: Manager Addr: 172.16.56.19 Insert Time: 08:21:27 UTC 04/18/96 Affinity Statistics: Affinity Count: 0 Interest Packet Timeouts: 0 Packet Statistics: Packets: 0 Bytes: 0 Action Details: Interest Addr: 172.16.56.19 Interest Port: 1638 Interest Packet: 0x8000 ALLPKTS Interest Tickle: 0x0107 FIN SYN RST FRAG Dispatch (Layer 2): NO Dispatch Address: 10.0.0.0 Advertise Dest Address: YES Match Fragments: NO Source Address Source Mask Port Dest Address Dest Mask Port Prot 10.0.0.0 0.0.0.0 0 172.16.56.2 255.255.255.255 0 TCP Service Manager Details: Manager Addr: 172.16.56.19 Insert Time: 08:21:27 UTC 04/18/96 Affinity Statistics: Affinity Count: 0 Interest Packet Timeouts: 0 Packet Statistics: Packets: 0 Bytes: 0 Action Details: Interest Addr: 172.16.56.19 Interest Port: 1638 Interest Packet: 0x8102 SYN FRAG ALLPKTS Interest Tickle: 0x0005 FIN RST Dispatch (Layer 2): NO Dispatch Address: 10.0.0.0 Advertise Dest Address: YES Match Fragments: NO
NoteIf a filter is not set, the filter is not active.
The table below describes significant fields shown in the display.
Table 8 show ip casa wildcard Field Descriptions Field
Description
Source Address
Source address of a given TCP connection.
Source Mask
Mask to apply to source address before matching.
Port
Source port of a given TCP connection.
Dest Address
Destination address of a given TCP connection.
Dest Mask
Mask to apply to destination address before matching.
Port
Destination port of a given TCP connection.
Prot
Protocol of a given TCP connection.
Service Manager Details
Services manager details.
Manager Addr
Source address of this wildcard.
Insert Time
System time at which this wildcard was inserted.
Affinity Statistics
Affinity statistics.
Affinity Count
Number of affinities created on behalf of this wildcard.
Interest Packet Timeouts
Number of unanswered interest packets.
Packet Statistics
Packet statistics.
Packets
Number of packets that match this wildcard.
Bytes
Number of bytes that match this wildcard.
Action Details
Actions to be taken on a match.
Interest Addr
Services manager that is to receive interest packets for this wildcard.
Interest Port
Services manager port to which interest packets are sent.
Interest Packet
List of packet types that the services manager is interested in.
Interest Tickle
List of packet types for which the services manager wants the entire packet.
Dispatch (Layer 2)
Layer 2 destination information will be modified.
Dispatch Address
Address of the real server.
Advertise Dest Address
Destination address.
Match Fragments
Indicates whether the wildcard matches fragments based on Boolean logic.
show ip helper-address
To display IP address information from the helper-address table, use the show ip helper-address command in user EXEC or privileged EXEC mode.
Command Default
If no arguments are specified, IP address information for all the entries in the helper-address table is displayed.
Examples
The following is sample output from the show ip helper-address command:
Router# show ip helper-address Interface Helper-Address VPN VRG Name VRG State FastEthernet0/0 172.16.0.0 0 router1 Unknown Ethernet3/3 172.16.1.0 0 None Unknown ATM6/0 172.16.2.0 0 None Unknown Loopback30 172.16.2.1 0 None Unknown 172.16.2.3 0 None Unknown 172.16.5.0 0 None UnknownThe table below describes the significant fields shown in the display.
show ip icmp rate-limit
To display all Internet Control Message Protocol (ICMP) unreachable destination messages or unreachable destination messages for a specified interface including the number of dropped packets, use the show ip icmp rate-limit command in privileged EXEC mode.
Syntax Description
Examples
The following is sample output when the show ip icmp rate-limit command is entered and unreachable messages are generated:
Router# show ip icmp rate-limit DF bit unreachables All other unreachables Interval (millisecond) 500 500 Interface # DF bit unreachables # All other unreachables --------- --------------------- ------------------------ Ethernet0/0 0 0 Ethernet0/2 0 0 Serial3/0/3 0 19 The greatest number of unreachables on Serial3/0/3 is 19.The following is sample output when the show ip icmp rate-limit command is entered and the rate-limit interval has been set at 500. The packet threshold has been set at 1 by using the ip icmp rate-limit unreachable command, so the logging will display on the console when the threshold is exceeded. The total suppressed packets since last log message is displayed.
Router# show ip icmp rate-limit 00:04:18: %IP-3-ICMPRATELIMIT: 2 unreachables rate-limited within 60000 milliseconds on Serial3/0/3. 17 log messages suppressed since last log message displayed on Serial3/0/3The table below describes the significant fields shown in the display.
show ip redirects
To display the address of a default gateway (router) and the address of hosts for which an Internet Control Message Protocol (ICMP) redirect message has been received, use the show ip redirects command in user EXEC or privileged EXEC mode.
Command History
Release
Modification
10.0
This command was introduced.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2SX
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware.
Usage Guidelines
This command displays the default router (gateway) as configured by the ip default-gateway command.
The ip mtucommand enables the router to send ICMP redirect messages.
show ip sctp association list
NoteEffective with Cisco IOS Release 12.4(11)T, the show ip sctp association list command is replaced by the show sctp association list command. See the show sctp association list command for more information.
To display identifiers and information for current Stream Control Transmission Protocol (SCTP) associations and instances, use the show ip sctp association list command in privileged EXEC mode.
Command History
Release
Modification
12.2(2)MB
This command was introduced as part of the show ip sctp command.
12.2(2)T
This command was changed to the show ip sctp association list command.
12.2(4)T
This command was integrated into Cisco IOS Release 12.2(4)T.
12.2(8)T
This command was implemented on the following platforms: Cisco 2600 series, Cisco 3600 series, and Cisco 7200 series. Support for the Cisco AS5300 is not included in this release.
12.2(11)T
This command was integrated into Cisco IOS Release 12.2(11)T.
12.4(11)T
This command was replaced by the show sctp association list command.
12.4(15)T
This command was moved to the Cisco IOS IP Application Services Command Reference.
Usage Guidelines
Use this command to display the current SCTP association and instance identifiers, the current state of SCTP associations, and the local and remote port numbers and addresses that are used in the associations.
Examples
The following is sample output from this command for three association identifiers:
Router# show ip sctp association list *** SCTP Association List **** AssocID:0, Instance ID:0 Current state:ESTABLISHED Local port:8989, Addrs:10.1.0.2 10.2.0.2 Remote port:8989, Addrs:10.6.0.4 10.5.0.4 AssocID:1, Instance ID:0 Current state:ESTABLISHED Local port:8989, Addrs:10.1.0.2 10.2.0.2 Remote port:8990, Addrs:10.6.0.4 10.5.0.4 AssocID:2, Instance ID:0 Current state:ESTABLISHED Local port:8989, Addrs:10.1.0.2 10.2.0.2 Remote port:8991, Addrs:10.6.0.4 10.5.0.4The table below describes the significant fields shown in the display.
Table 11 show ip sctp association list Field Descriptions Field
Description
Assoc ID
SCTP association identifier.
Instance ID
SCTP association instance identifier.
Current state
SCTP association state, which can be ESTABLISHED, CLOSED, COOKIE-WAIT, and COOKIE-ECHOED.
Local port, Addrs
Port and IP address for the local SCTP endpoint.
Remote port, Addrs
Port and IP address for the remote SCTP endpoint.
Related Commands
Command
Description
clear ip sctp statistics
Clears statistics counts for SCTP.
debug ip sctp api
Reports SCTP diagnostic information and messages.
show ip sctp association parameters
Displays the parameters configured for the association defined by the association identifier.
show ip sctp association statistics
Displays the current statistics for the association defined by the association identifier.
show ip sctp errors
Displays error counts logged by SCTP.
show ip sctp instances
Displays the currently defined SCTP instances.
show ip sctp statistics
Displays the overall statistics counts for SCTP.
show iua as
Displays information about the current condition of an application server.
show iua asp
Displays information about the current condition of an application server process.
show ip sctp association parameters
NoteEffective with Cisco IOS Release 12.4(11)T, the show ip sctp association parameters command is replaced by the show sctp association parameters command. See the show sctp association parameters command for more information.
To display configured and calculated parameters for the specified Stream Control Transmission Protocol (SCTP) association, use the show ip sctp association parameters command in privileged EXEC mode.
Command History
Release
Modification
12.2(2)MB
This command was introduced as part of the show ip sctp command.
12.2(2)T
This command was changed to the show ip sctp association parameters command.
12.2(4)T
This command was integrated into Cisco IOS Release 12.2(4)T.
12.2(8)T
Three new output fields were added to this command: Outstanding bytes, per destination address; Round trip time (RTT), per destination address; and Smoothed round trip time (SRTT), per destination address.
12.2(11)T
This command was integrated into Cisco IOS Release 12.2(11)T and support was added for the Cisco AS5300 and Cisco AS5850.
12.2(15)T
This command was implemented on the Cisco 2420, Cisco 2600 series, Cisco 3600 series, and Cisco 3700 series; and Cisco AS5300, Cisco AS5350, Cisco AS5400, and Cisco AS5850 network access server (NAS) platforms.
12.4(11)T
This command was replaced by the show sctp association parameters command.
12.4(15)T
This command was moved to the Cisco IOS IP Application Services Command Reference .
Usage Guidelines
The show ip sctp association parameters command provides information to determine the stability of SCTP associations, dynamically calculated statistics about destinations, and values to assess network congestion. This command also displays parameter values for the specified association.
This command requires an association identifier. Association identifiers can be obtained from the output of the show ip sctp association list command.
Many parameters are defined for each association. Some are configured parameters, and others are calculated. Three main groupings of parameters are displayed by this command:
The association configuration section displays information similar to that in the show ip sctp association list command, including association identifiers, state, and local and remote port and address information. The current primary destination is also displayed.
Examples
The following sample output shows the IP SCTP association parameters for association 0:
Router# show ip sctp association parameters 0 ** SCTP Association Parameters ** AssocID: 0 Context: 0 InstanceID: 1 Assoc state: ESTABLISHED Uptime: 19:05:57.425 Local port: 8181 Local addresses: 10.1.0.3 10.2.0.3 Remote port: 8181 Primary dest addr: 10.5.0.4 Effective primary dest addr: 10.5.0.4 Destination addresses: 10.5.0.4: State: ACTIVE Heartbeats: Enabled Timeout: 30000 ms RTO/RTT/SRTT: 1000/16/38 ms TOS: 0 MTU: 1500 cwnd: 5364 ssthresh: 3000 outstand: 768 Num retrans: 0 Max retrans: 5 Num times failed: 0 10.6.0.4: State: ACTIVE Heartbeats: Enabled Timeout: 30000 ms RTO/RTT/SRTT: 1000/4/7 ms TOS: 0 MTU: 1500 cwnd: 3960 ssthresh: 3000 outstand: 0 Num retrans: 0 Max retrans: 5 Num times failed: 0 Local vertag: 9A245CD4 Remote vertag: 2A08D122 Num inbound streams: 10 outbound streams: 10 Max assoc retrans: 5 Max init retrans: 8 CumSack timeout: 200 ms Bundle timeout: 100 ms Min RTO: 1000 ms Max RTO: 60000 ms LocalRwnd: 18000 Low: 13455 RemoteRwnd: 15252 Low: 13161 Congest levels: 0 current level: 0 high mark: 325The table below describes the significant fields shown in the display.
Table 12 show ip sctp association parameters Field Descriptions Field
Description
AssocID
SCTP association identifier.
Context
Internal upper-layer handle.
InstanceID
SCTP association instance identifier.
Assoc state
SCTP association state, which can be ESTABLISHED, CLOSED, COOKIE-WAIT, and COOKIE-ECHOED.
Uptime
How long the association has been active.
Local port
Port number for the local SCTP endpoint.
Local addresses
IP addresses for the local SCTP endpoint.
Remote port
Port number for the remote SCTP endpoint.
Primary dest addr
Primary destination address.
Effective primary dest addr
Current primary destination address.
Heartbeats
Status of heartbeats.
Timeout
Heartbeat timeout.
RTO/RTT/SRTT
Retransmission timeout, round trip time, and smoothed round trip time, calculated from network feedback.
TOS
IP precedence setting.
MTU
Maximum transmission unit size, in bytes, that a particular interface can handle.
cwnd
Congestion window value calculated from network feedback. This value is the maximum amount of data that can be outstanding in the network for that particular destination.
ssthresh
Slow-start threshold value calculated from network feedback.
outstand
Number of outstanding bytes.
Num retrans
Current number of times that data has been retransmitted to that address.
Max retrans
Maximum number of times that data has been retransmitted to that address.
Num times failed
Number of times that the address has been marked as failed.
Local vertag, Remote vertag
Verification tags (vertags). Tags are chosen during association initialization and do not change.
Num inbound streams, Num outbound streams
Maximum inbound and outbound streams. This number does not change.
Max assoc retrans
Maximum association retransmit limit. Number of times that any particular chunk may be retransmitted before a declaration that the association failed, which indicates that the chunk could not be delivered on any address.
Max init retrans
Maximum initial retransmit limit. Number of times that the chunks for initialization may be retransmitted before a declaration that the attempt to establish the association failed.
CumSack timeout
Cumulative selective acknowledge (SACK) timeout. The maximum time that a SACK may be delayed while attempting to bundle together with data chunks.
Bundle timeout
Maximum time that data chunks may be delayed while attempts are made to bundle them with other data chunks.
Min RTO, Max RTO
Minimum and maximum retransmit timeout values allowed for the association.
LocalRwnd, RemoteRwnd
Local and remote receive windows.
Congest levels: current level, high mark
Current congestion level and highest number of packets queued.
Related Commands
Command
Description
clear ip sctp statistics
Clears statistics counts for SCTP.
debug ip sctp api
Reports SCTP diagnostic information and messages.
show ip sctp association list
Displays a list of all current SCTP associations.
show ip sctp association statistics
Displays the current statistics for the association defined by the association identifier.
show ip sctp errors
Displays error counts logged by SCTP.
show ip sctp instances
Displays all currently defined SCTP instances.
show ip sctp statistics
Displays overall statistics counts for SCTP.
show iua as
Displays information about the current condition of an application server.
show iua asp
Displays information about the current condition of an application server process.
show ip sctp association statistics
NoteEffective with Cisco IOS Release 12.4(11)T, the show ip sctp association statistics command is replaced by the show sctp association statistics command. See the show sctp association statistics command for more information.
To display statistics that have accumulated for the specified Stream Control Transmission Protocol (SCTP) association, use the show ip sctp association statistics command in privileged EXEC mode.
Command History
Release
Modification
12.2(2)MB
This command was introduced as part of the show ip sctp command.
12.2(2)T
This command was changed to the show ip sctp association statistics command.
12.2(4)T
This command was integrated into Cisco IOS Release 12.2(4)T.
12.2(8)T
Two new output fields were added to this command: Number of unordered data chunks sent and Number of unordered data chunks received. Support for the Cisco AS5300, Cisco AS5350, Cisco AS5400, and Cisco AS5850 is not included in this release.
12.2(11)T
This command was implemented on the Cisco AS5300, Cisco AS5350, Cisco AS5400, and Cisco AS5850.
12.4(11)T
This command was replaced by the show sctp association statistics command.
12.4(15)T
This command was moved to the Cisco IOS IP Application Services Command Reference.
Usage Guidelines
This command shows only the information that has become available since the last time a clear ip sctp statistics command was executed.
Examples
The following sample output shows the statistics accumulated for SCTP association 0:
Router# show ip sctp association statistics 0 ** SCTP Association Statistics ** AssocID/InstanceID: 0/1 Current State: ESTABLISHED Control Chunks Sent: 623874 Rcvd: 660227 Data Chunks Sent Total: 14235644 Retransmitted: 60487 Ordered: 6369678 Unordered: 6371263 Avg bundled: 18 Total Bytes: 640603980 Data Chunks Rcvd Total: 14496585 Discarded: 1755575 Ordered: 6369741 Unordered: 6371269 Avg bundled: 18 Total Bytes: 652346325 Out of Seq TSN: 3069353 ULP Dgrams Sent: 12740941 Ready: 12740961 Rcvd: 12740941The table below describes the significant fields shown in the display.
Table 13 show ip sctp association statistics Field Descriptions Field
Description
AssocID/InstanceID
SCTP association identifier and instance identifier.
Current State
State of SCTP association.
Control Chunks
SCTP control chunks sent and received.
Data Chunks Sent
SCTP data chunks sent, ordered and unordered.
Data Chunks Rcvd
SCTP data chunks received, ordered and unordered.
ULP Dgrams
Number of datagrams sent, ready, and received by the Upper-Layer Protocol (ULP).
Related Commands
Command
Description
clear ip sctp statistics
Clears statistics counts for SCTP.
debug ip sctp api
Reports SCTP diagnostic information and messages.
show ip sctp association list
Displays a list of all current SCTP associations.
show ip sctp association parameters
Displays the parameters configured for the association defined by the association identifier.
show ip sctp errors
Displays error counts logged by SCTP.
show ip sctp instances
Displays all currently defined SCTP instances.
show ip sctp statistics
Displays overall statistics counts for SCTP.
show iua as
Displays information about the current condition of an application server.
show iua asp
Displays information about the current condition of an application server process.
show ip sctp errors
NoteEffective with Cisco IOS Release 12.4(11)T, the show ip sctp errors command is replaced by the show sctp errors command. See the show sctp errors command for more information.
To display the error counts logged by the Stream Control Transmission Protocol (SCTP), use the show ip sctp errors command in privileged EXEC mode.
Command History
Release
Modification
12.2(2)MB
This command was introduced as part of the show ip sctp command.
12.2(2)T
This command was changed to the show ip sctp errors command.
12.2(4)T
This command was integrated into Cisco IOS Release 12.2(4)T.
12.2(8)T
This command was integrated into Cisco IOS Release 12.2(8)T. Support for the Cisco AS5300, Cisco AS5350, Cisco AS5400, and Cisco AS5850 is not included in this release.
12.2(11)T
This command was implemented on the Cisco AS5300, Cisco AS5350, Cisco AS5400, and Cisco AS5850.
12.4(11)T
This command was replaced by the show sctp errors command.
12.4(15)T
This command was moved to the Cisco IOS IP Application Services Command Reference.
Usage Guidelines
This command displays all errors across all associations that have been logged since the last time that the SCTP statistics were cleared with the clear ip sctp statistics command. If no errors have been logged, this is indicated in the output.
Examples
The following sample output shows a session with no errors:
Router# show ip sctp errors *** SCTP Error Statistics **** No SCTP errors logged.The following sample output shows a session that has SCTP errors:
Router# show ip sctp errors ** SCTP Error Statistics ** Invalid verification tag: 5 Communication Lost: 64 Destination Address Failed: 3 Unknown INIT params rcvd: 16 Invalid cookie signature: 5 Expired cookie: 1 Peer restarted: 1 No Listening instance: 2Field descriptions are self-explanatory.
Related Commands
Command
Description
clear ip sctp statistics
Clears statistics counts for SCTP.
debug ip sctp api
Reports SCTP diagnostic information and messages.
show ip sctp association list
Displays a list of all current SCTP associations.
show ip sctp association parameters
Displays the parameters configured for the association defined by the association ID.
show ip sctp association statistics
Displays the current statistics for the association defined by the association ID.
show ip sctp instances
Displays the currently defined SCTP instances.
show ip sctp statistics
Displays overall statistics counts for SCTP.
show iua as
Displays information about the current condition of an AS.
show iua asp
Displays information about the current condition of an ASP.
show ip sctp instances
NoteEffective with Cisco IOS Release 12.4(11)T, the show ip sctp instances command is replaced by the show sctp instances command. For more information, see the show sctp instances command.
To display information for each of the currently configured Stream Control Transmission Protocol (SCTP) instances, use the show ip sctp instances command in privileged EXEC mode.
Command History
Release
Modification
12.2(2)MB
This command was introduced as part of the show ip sctp command.
12.2(2)T
This command was changed to the show ip sctp instances command.
12.2(4)T
This command was integrated into Cisco IOS Release 12.2(4)T.
12.2(8)T
This command was integrated into Cisco IOS Release 12.2(8)T. Support for the Cisco AS5300, Cisco AS5350, Cisco AS5400, and Cisco AS5850 is not included in this release.
12.2(11)T
This command was implemented on the Cisco AS5300, Cisco AS5350, Cisco AS5400, and Cisco AS5850.
12.4(11)T
This command was replaced by the show sctp instances command.
12.4(15)T
This command was moved to the Cisco IOS IP Application Services Command Reference.
Usage Guidelines
This command displays information for each of the currently configured instances. The instance number, local port, and address information are displayed. The instance state is either available or deletion pending. An instance enters the deletion pending state when a request is made to delete it but there are currently established associations for that instance. The instance cannot be deleted immediately and instead enters the pending state. No new associations are allowed in this instance, and when the last association is terminated or fails, the instance is deleted.
The default inbound and outbound stream numbers are used for establishing incoming associations, and the maximum number of associations allowed for this instance is shown. Then a snapshot of each existing association is shown, if any exists.
Effective with Cisco IOS Release 12.4(11)T, if you enter the show ip sctp instances command, you must type the complete word instances in the command syntax.
Examples
The following sample output shows available IP SCTP instances. In this example, two current instances are active and available. The first is using local port 8989, and the second is using 9191. Instance identifier 0 has three current associations, and instance identifier 1 has no current associations.
Router# show ip sctp instances *** SCTP Instances **** Instance ID:0 Local port:8989 Instance state:available Local addrs:10.1.0.2 10.2.0.2 Default streams inbound:1 outbound:1 Current associations: (max allowed:6) AssocID:0 State:ESTABLISHED Remote port:8989 Dest addrs:10.6.0.4 10.5.0.4 AssocID:1 State:ESTABLISHED Remote port:8990 Dest addrs:10.6.0.4 10.5.0.4 AssocID:2 State:ESTABLISHED Remote port:8991 Dest addrs:10.6.0.4 10.5.0.4 Instance ID:1 Local port:9191 Instance state:available Local addrs:10.1.0.2 10.2.0.2 Default streams inbound:1 outbound:1 No current associations established for this instance. Max allowed:6Field descriptions are self-explanatory.
Related Commands
Command
Description
clear ip sctp statistics
Clears statistics counts for SCTP.
debug ip sctp api
Reports SCTP diagnostic information and messages.
show ip sctp association list
Displays a list of all current SCTP associations.
show ip sctp association parameters
Displays the parameters configured for the association defined by the association identifier.
show ip sctp association statistics
Displays the current statistics for the association defined by the association identifier.
show ip sctp errors
Displays error counts logged by SCTP.
show ip sctp statistics
Displays the overall statistics counts for SCTP.
show iua as
Displays information about the current condition of an AS.
show iua asp
Displays information about the current condition of an ASP.
show ip sctp statistics
NoteEffective with Cisco IOS Release 12.4(11)T, the show ip sctp statistics command is replaced by the show sctp statistics command. See the show sctp statistics command for more information.
To display the overall statistics counts for Stream Control Transmission Protocol (SCTP) activity, use the show ip sctp statistics command in privileged EXEC mode.
Command History
Release
Modification
12.2(2)MB
This command was introduced as part of the show ip sctp command.
12.2(2)T
This command was changed to the show ip sctp statistics command.
12.2(4)T
This command was integrated into Cisco IOS Release 12.2(4)T.
12.2(8)T
This command was integrated into Cisco IOS Release 12.2(8)T. Support for the Cisco AS5300, Cisco AS5350, Cisco AS5400, and Cisco AS5850 is not included in this release.
12.2(11)T
This command is supported on the Cisco AS5300, Cisco AS5350, Cisco AS5400, and Cisco AS5850 in this release.
12.4(11)T
This command was replaced by the show sctp statistics command.
12.4(15)T
This command was moved to the Cisco IP Application Services Command Reference.
Usage Guidelines
This command displays the overall SCTP statistics accumulated since the last clear ip sctp statistics command. It includes numbers for all currently established associations, and for any that have been terminated. The statistics indicated are similar to those shown for individual associations.
Examples
The following sample output shows IP SCTP statistics:
Router# show ip sctp statistics *** SCTP Overall Statistics **** Total Chunks Sent: 2097 Total Chunks Rcvd: 2766 Data Chunks Rcvd In Seq: 538 Data Chunks Rcvd Out of Seq: 0 Total Data Chunks Sent: 538 Total Data Chunks Rcvd: 538 Total Data Bytes Sent: 53800 Total Data Bytes Rcvd: 53800 Total Data Chunks Discarded: 0 Total Data Chunks Retrans: 0 Total SCTP Dgrams Sent: 1561 Total SCTP Dgrams Rcvd: 2228 Total ULP Dgrams Sent: 538 Total ULP Dgrams Ready: 538 Total ULP Dgrams Rcvd: 538Field descriptions are self-explanatory.
Related Commands
Command
Description
clear ip sctp statistics
Clears statistics counts for SCTP.
debug ip sctp api
Reports SCTP diagnostic information and messages.
show ip sctp association list
Displays a list of all current SCTP associations.
show ip sctp association parameters
Displays the parameters configured and calculated for the association defined by the association identifier.
show ip sctp association statistics
Displays the current statistics for the association defined by the association identifier.
show ip sctp errors
Displays error counts logged by SCTP.
show ip sctp instances
Displays all currently defined SCTP instances.
show iua as
Displays information about the current condition of an AS.
show iua asp
Displays information about the current condition of an ASP.
