Table Of Contents
show ip tcp header-compression
show sctp association parameters
show sctp association statistics
show ip sockets
To display IP socket information, use the show ip sockets command in user EXEC or privileged EXEC mode.
show ip sockets
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
Usage Guidelines
Use this command to verify that the socket being used is opening correctly. If there is a local and remote endpoint, a connection is established with the ports indicated.
Examples
The following is sample output from the show ip sockets command:
Router# show ip socketsProto Remote Port Local Port In Out Stat TTY OutputIF17 10.0.0.0 0 172.16.186.193 67 0 0 1 017 172.16.191.135 514 172.16.191.129 1811 0 0 0 017 172.16.135.20 514 172.16.191.1 4125 0 0 0 017 172.16.207.163 49 172.16.186.193 49 0 0 9 017 10.0.0.0 123 172.16.186.193 123 0 0 1 088 10.0.0.0 0 172.16.186.193 202 0 0 0 017 172.16.96.59 32856 172.16.191.1 161 0 0 1 017 --listen-- --any-- 496 0 0 1 0The following sample output from the show ip sockets command shows IPv6 socket information:
Router# show ip socketsProto Remote Port Local Port In Out Stat TTY OutputIF17(v6) --listen-- --any-- 1024 0 0 0 017(v6) --listen-- --any-- 7 0 0 0 0 17(v6) --listen-- --any-- 161 0 0 0 017(v6) --listen-- --any-- 162 0 0 0 017 --listen-- --any-- 1024 0 0 0 017 --listen-- --any-- 7 0 0 0 017 --listen-- --any-- 9 0 0 0 017 --listen-- --any-- 19 0 0 0 017 --listen-- --any-- 1645 0 0 0 017 --listen-- --any-- 1646 0 0 0 017 --listen-- --any-- 161 0 0 0 017 --listen-- --any-- 162 0 0 0 0Table 57 describes the significant fields shown in the display.
Related Commands
show ip tcp header-compression
To display Transmission Control Protocol (TCP)/IP header compression statistics, use the show ip tcp header-compression command in user EXEC or privileged EXEC mode.
show ip tcp header-compression [interface-type interface-number] [detail]
Syntax Description
interface-type interface-number
(Optional) The interface type and number.
detail
(Optional) Displays details of each connection. This keyword is available only in privileged EXEC mode.
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
Examples
The following is sample output from the show ip tcp header-compression command:
Router# show ip tcp header-compressionTCP/IP header compression statistics:Interface Serial2/0 (compression on, IETF)Rcvd: 53797 total, 53796 compressed, 0 errors, 0 status msgs0 dropped, 0 buffer copies, 0 buffer failuresSent: 53797 total, 53796 compressed, 0 status msgs, 0 not predicted1721848 bytes saved, 430032 bytes sent5.00 efficiency improvement factorConnect: 16 rx slots, 16 tx slots,1 misses, 0 collisions, 0 negative cache hits, 15 free contexts99% hit ratio, five minute miss rate 0 misses/sec, 0 maxTable 58 describes significant fields shown in the display.
Related Commands
ip tcp compression-connections
Specifies the total number of TCP header compression connections that can exist on an interface
show ip traffic
To display statistics about IP traffic, use the show ip traffic command in user EXEC or privileged EXEC mode.
show ip traffic
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
Examples
The following is sample output from the show ip traffic command:
Router# show ip trafficIP statistics:Rcvd: 27 total, 27 local destination0 format errors, 0 checksum errors, 0 bad hop count0 unknown protocol, 0 not a gateway0 security failures, 0 bad options, 0 with optionsOpts: 0 end, 0 nop, 0 basic security, 0 loose source route0 timestamp, 0 extended security, 0 record route0 stream ID, 0 strict source route, 0 alert, 0 cipso, 0 ump0 otherFrags: 0 reassembled, 0 timeouts, 0 couldn't reassemble0 fragmented, 0 couldn't fragmentBcast: 27 received, 0 sentMcast: 0 received, 0 sentSent: 0 generated, 0 forwardedDrop: 0 encapsulation failed, 0 unresolved, 0 no adjacency0 no route, 0 unicast RPF, 0 forced dropDrop: 0 packets with source IP address zeroICMP statistics:Rcvd: 0 format errors, 0 checksum errors, 0 redirects, 0 unreachable0 echo, 0 echo reply, 0 mask requests, 0 mask replies, 0 quench0 parameter, 0 timestamp, 0 info request, 0 other0 irdp solicitations, 0 irdp advertisements0 time exceeded, 0 timestamp replies, 0 info repliesSent: 0 redirects, 0 unreachable, 0 echo, 0 echo reply0 mask requests, 0 mask replies, 0 quench, 0 timestamp0 info reply, 0 time exceeded, 0 parameter problem0 irdp solicitations, 0 irdp advertisementsBGP statistics:Rcvd: 0 total, 0 opens, 0 notifications, 0 updates0 keepalives, 0 route-refresh, 0 unrecognizedSent: 0 total, 0 opens, 0 notifications, 0 updates0 keepalives, 0 route-refreshEIGRP-IPv4 statistics:Rcvd: 0 totalSent: 0 totalTCP statistics:Rcvd: 0 total, 0 checksum errors, 0 no portSent: 0 totalPIMv2 statistics: Sent/ReceivedTotal: 0/0, 0 checksum errors, 0 format errorsRegisters: 0/0 (0 non-rp, 0 non-sm-group), Register Stops: 0/0, Hellos: 0/0Join/Prunes: 0/0, Asserts: 0/0, grafts: 0/0Bootstraps: 0/0, Candidate_RP_Advertisements: 0/0State-Refresh: 0/0IGMP statistics: Sent/ReceivedTotal: 0/0, Format errors: 0/0, Checksum errors: 0/0Host Queries: 0/0, Host Reports: 0/0, Host Leaves: 0/0DVMRP: 0/0, PIM: 0/0UDP statistics:Rcvd: 185515 total, 0 checksum errors, 185515 no portSent: 0 total, 0 forwarded broadcastsOSPF statistics:Rcvd: 0 total, 0 checksum errors0 hello, 0 database desc, 0 link state req0 link state updates, 0 link state acksSent: 0 total0 hello, 0 database desc, 0 link state req0 link state updates, 0 link state acksProbe statistics:Rcvd: 0 address requests, 0 address replies0 proxy name requests, 0 where-is requests, 0 otherSent: 0 address requests, 0 address replies (0 proxy)0 proxy name replies, 0 where-is repliesARP statistics:Rcvd: 1477 requests, 8841 replies, 396 reverse, 0 otherSent: 1 requests, 20 replies (0 proxy), 0 reverseDrop due to input queue full: 0Cisco 10000 Series Routers Example Only
The following is sample output from the show ip traffic command:
Router# show ip trafficIP statistics:Rcvd: 27 total, 27 local destination0 format errors, 0 checksum errors, 0 bad hop count0 unknown protocol, 0 not a gateway0 security failures, 0 bad options, 0 with optionsOpts: 0 end, 0 nop, 0 basic security, 0 loose source route0 timestamp, 0 extended security, 0 record route0 stream ID, 0 strict source route, 0 alert, 0 cipso, 0 ump0 otherFrags: 0 reassembled, 0 timeouts, 0 couldn't reassemble0 fragmented, 0 couldn't fragmentBcast: 27 received, 0 sentMcast: 0 received, 0 sentSent: 0 generated, 0 forwardedDrop: 0 encapsulation failed, 0 unresolved, 0 no adjacency0 no route, 0 unicast RPF, 0 forced drop0 options denied, 0 source IP address zeroTable 59 describes the significant fields shown in the display.
show ip wccp
To display global statistics related to Web Cache Communication Protocol (WCCP), use the show ip wccp command in user EXEC or privileged EXEC mode.
show ip wccp [service-number | interfaces {cef | counts | detail} | | web-cache] [detail | view]
Syntax Description
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
Usage Guidelines
Use the clear ip wccp command to reset the counter for the "Packets Redirected" information.
Use the show ip wccp service-number command to provide the "Total Packets Redirected" count. The "Total Packets Redirected" count is the number of flows, or sessions, that are redirected.
Use the show ip wccp service-number detail command to provide the "Packets Redirected" count. The "Packets Redirected" count is the number of flows, or sessions, that are redirected.
Use the show ip wccp web-cache detail command to provide an indication of how many flows, rather than packets, are using Layer 2 redirection.
For cache-engine clusters using Cisco cache engines, the reverse proxy service-number is indicated by a value of 99.
Cisco IOS counters display software-based (CEF and process switching) fowarding of WCCP packets. The Cisco ASR 1000 series aggregation services routers implement WCCP in hardware, rather than in the CEF or process-switching paths, which produces a packet count of 0 when the show ip wccp command is entered. Use the show platform software wccp command to display global statistics related to WCCP on the Cisco ASR 1000 series aggregation services routers.
Examples
This section contains examples and field descriptions for the following forms of this command:
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show ip wccp service-number (service mode displayed)
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show ip wccp service-number (Service Mode Displayed)
The following is sample output from the show ip wccp service-number command:
Router# show ip wccp 90Global WCCP information:Router information:Router Identifier: 100.1.1.16Protocol Version: 2.0Service Identifier: 90Number of Service Group Clients: 1Number of Service Group Routers: 1Total Packets s/w Redirected: 0Process: 0CEF: 0Service mode: ClosedService Access-list: tcp91Total Packets Dropped Closed: 0Redirect Access-list: -none-Total Packets Denied Redirect: 0Total Packets Unassigned: 0Group Access-list: -none-Total Messages Denied to Group: 0Total Authentication failures: 0Total Bypassed Packets Received: 0Table 60 describes the significant fields shown in the display.
show ip wccp service-number view
The following is sample output from the show ip wccp service-number view command for service group 1:
Router# show ip wccp 1 viewWCCP Router Informed of:10.168.88.1010.168.88.20WCCP Cache Engines Visible10.168.88.1110.168.88.12WCCP Cache Engines Not Visible:-none-
Note
If any web cache is displayed under the WCCP Cache Engines Not Visible field, the router needs to be reconfigured to map the web cache that is not visible to it.
Table 61 describes the significant fields shown in the display.
show ip wccp service-number detail
The following example displays WCCP client information and WCCP router statistics that include the type of services:
Router# show ip wccp 91 detailWCCP Client information:WCCP Client ID: 10.1.1.14Protocol Version: 2.0State: UsableRedirection: GREPacket Return: GREAssignment: HASHInitial Hash Info: 0000000000000000000000000000000000000000000000000000000000000000Assigned Hash Info: FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFHash Allotment: 256 (100.00%)Packets Redirected: 0Connect Time: 00:01:56Bypassed PacketsProcess: 0CEF: 0show ip wccp interfaces
The following is sample output from the show ip wccp interfaces command:
Router# show ip wccp interfacesWCCP interface configuration:FastEthernet0/1/0Output services: 2Input services: 3Mcast services: 1Exclude In: FALSETable 62 describes the significant fields shown in the display.
show ip wccp web-cache
The following is sample output from the show ip wccp web-cache command:
Router# show ip wccp web-cacheGlobal WCCP Information:Service Name: web-cache:Number of Cache Engines: 1Number of Routers: 1Total Packets Redirected: 213Redirect access-list: no_linuxTotal Packets Denied Redirect: 88Total Packets Unassigned: -none-Group access-list: 0Total Messages Denied to Group: 0Total Authentication failures: 0Table 63 describes the significant fields shown in the display.
show ip wccp web-cache detail
The following example displays web-cache engine information and WCCP router statistics for the web-cache service:
Router# show ip wccp web-cache detailWCCP Router information:IP Address 10.168.88.10Protocol Version: 2.0WCCP Client InformationIP Address: 10.168.88.11Protocol Version: 2.0State: UsableInitial Hash Info: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAssigned Hash Info: FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFHash Allotment: 256 (100.00%)Packets Redirected: 21345Connect Time: 00:13:46Table 64 describes the significant fields shown in the display.
show ip wccp web-cache detail (Bypass Counters)
The following example displays web-cache engine information and WCCP router statistics that include the bypass counters:
Router# show ip wccp web-cache detailWCCP Router information:IP Address: 10.168.88.10Protocol Version: 2.0WCCP Client InformationIP Address: 10.168.88.11Protocol Version: 2.0State: UsableInitial Hash Info: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAssigned Hash Info: FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFHash Allotment: 256 (100.00%)Packets Redirected: 21345Connect Time: 00:13:46Bypassed PacketsProcess: 0Fast: 0CEF: 250Table 65 describes the significant fields shown in the display.
Related Commands
show ip wccp web-caches
The show ip wccp web-caches command has been replaced by the show ip wccp web-cache detail command. See the description of the show ip wccp command in this book for more information.
show platform software wccp
To display global statistics related to Web Cache Communication Protocol (WCCP) on Cisco ASR 1000 series aggregation services routers, use the show platform software wccp command in user EXEC or privileged EXEC mode.
show platform software wccp [service-number counters | slot [service-number [access-list]] | cache-info [object-id] | interface | statistics | web-cache [access-list]]]
Syntax Description
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
Usage Guidelines
Use the show platform software wccp to display global statistics related to WCCP on the Cisco ASR 1000 series aggregation services routers. The show ip wccp command displays information about software-based (process, fast, and Cisco Express Forwarding [CEF]) forwarding of WCCP packets. The Cisco ASR 1000 series aggregation services routers implement WCCP in hardware, rather than in the CEF or process-switching paths. This results in a packet count of 0 when the show ip wccp command is entered.
Examples
The following is sample output from the show platform software wccp counters command:
Router# show platform software wccp 61 countersService Group (1, 61) countersUnassigned count = 0Dropped due to closed service count = 0Bypass count = 0Bypass failed count = 0Denied count = 0Redirect count = 313635910244CE = 10.1.1.2, obj_id = 58, Redirect Packets = 42768533218CE = 10.2.1.2, obj_id = 165, Redirect Packets = 45619768766...Table 66 describes the significant fields shown in the display.
The following is sample output from the show platform software wccp slot interface command:
Router# show platform software wccp f0 interfaceInterface FastEthernet0/1/0if_handle: 11, direction: InStandard web-cache serviceTable 67 describes the significant fields shown in the display.
The following is sample output from the show platform software wccp interface counters command:
Router# show platform software wccp interface countersInterface FastEthernet0/1/0Input Redirect Packets = 0Output Redirect Packets = 0Table 68 describes the significant fields shown in the display.
The following is sample output from the show platform software wccp web-cache counters command:
Router# show platform software wccp web-cache countersService Group (0, 0) countersUnassigned count = 0Dropped due to closed service count = 0Bypass count = 0Bypass failed count = 0Denied count = 0Redirect count = 0Table 69 describes the significant fields shown in the display.
Related Commands
ip wccp
Enables WCCP on a router and specifies the type of services to be used.
ip wccp redirect
Enables packet redirection on an outbound or inbound interface using WCCP.
show sctp association
To display accumulated information for a specific Stream Control Transmission Protocol (SCTP) association, use the show sctp association command in privileged EXEC mode.
show sctp association assoc-id
Syntax Description
assoc-id
Association identifier, which can be obtained from the output of the show sctp association list command.
Command Modes
Privileged EXEC (#)
Command History
12.4(11)T
This command was introduced.
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 sctp statistics command was executed.
Because thousands of associations can be on a single socket and instance ID, this command has been created to limit the output by displaying the status of one particular association ID.
Examples
The following sample output shows the established associations:
Router# show sctp association list** SCTP Association List **AssocID: 3011699535, Instance ID: 1Current state: ESTABLISHEDLocal port: 2000, Addrs: 10.1.0.1 10.2.0.1 10.3.0.1 10.0.20.105Remote port: 1000, Addrs: 10.1.0.1 10.2.0.1 10.3.0.1 10.0.20.105AssocID: 2740019456, Instance ID: 0Current state: ESTABLISHEDLocal port: 1000, Addrs: 10.1.0.1 10.2.0.1 10.3.0.1 10.0.20.105Remote port: 2000, Addrs: 10.1.0.1 10.2.0.1 10.3.0.1 10.0.20.105The following sample output shows information for SCTP association 3011699535:
Router# show sctp association 3011699535AssocID: 3011699535, Instance ID: 1Current state: ESTABLISHEDLocal port: 2000, Addrs: 10.1.0.1 10.2.0.1 10.3.0.1 10.0.20.105Remote port: 1000, Addrs: 10.1.0.1 10.2.0.1 10.3.0.1 10.0.20.105Table 70 describes the significant fields shown in the display.
Related Commands
show sctp association list
To display identifiers and information for current Stream Control Transmission Protocol (SCTP) associations and instances, use the show sctp association list command in privileged EXEC mode.
show sctp association list
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC (#)
Command History
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 sctp association list*** SCTP Association List ****AssocID:0, Instance ID:0Current state:ESTABLISHEDLocal port:8989, Addrs:10.1.0.2 10.2.0.2Remote port:8989, Addrs:10.6.0.4 10.5.0.4AssocID:1, Instance ID:0Current state:ESTABLISHEDLocal port:8989, Addrs:10.1.0.2 10.2.0.2Remote port:8990, Addrs:10.6.0.4 10.5.0.4AssocID:2, Instance ID:0Current state:ESTABLISHEDLocal port:8989, Addrs:10.1.0.2 10.2.0.2Remote port:8991, Addrs:10.6.0.4 10.5.0.4Table 71 describes the significant fields shown in the display.
Related Commands
show sctp association parameters
To display configured and calculated parameters for the specified Stream Control Transmission Protocol (SCTP) association, use the show sctp association parameters command in privileged EXEC mode.
show sctp association parameters assoc-id
Syntax Description
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
The show 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 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:
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The association configuration section displays information similar to that in the show 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 sctp association parameters 0** SCTP Association Parameters **AssocID: 0 Context: 0 InstanceID: 1Assoc state: ESTABLISHED Uptime: 19:05:57.425Local port: 8181Local addresses: 10.1.0.3 10.2.0.3Remote port: 8181Primary dest addr: 10.5.0.4Effective primary dest addr: 10.5.0.4Destination addresses:10.5.0.4: State: ACTIVEHeartbeats: Enabled Timeout: 30000 msRTO/RTT/SRTT: 1000/16/38 ms TOS: 0 MTU: 1500cwnd: 5364 ssthresh: 3000 outstand: 768Num retrans: 0 Max retrans: 5 Num times failed: 010.6.0.4: State: ACTIVEHeartbeats: Enabled Timeout: 30000 msRTO/RTT/SRTT: 1000/4/7 ms TOS: 0 MTU: 1500cwnd: 3960 ssthresh: 3000 outstand: 0Num retrans: 0 Max retrans: 5 Num times failed: 0Local vertag: 9A245CD4 Remote vertag: 2A08D122Num inbound streams: 10 outbound streams: 10Max assoc retrans: 5 Max init retrans: 8CumSack timeout: 200 ms Bundle timeout: 100 msMin RTO: 1000 ms Max RTO: 60000 msLocalRwnd: 18000 Low: 13455 RemoteRwnd: 15252 Low: 13161Congest levels: 0 current level: 0 high mark: 325Table 72 describes the significant fields shown in the display.
Related Commands
show sctp association statistics
To display statistics that have accumulated for the specified Stream Control Transmission Protocol (SCTP) association, use the show sctp association statistics command in privileged EXEC mode.
show sctp association statistics assoc-id
Syntax Description
assoc-id
Association identifier, which can be obtained from the output of the show sctp association list command.
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
This command shows only the information that has become available since the last time a clear sctp statistics command was executed.
Examples
The following sample output shows the statistics accumulated for SCTP association 0:
Router# show sctp association statistics 0** SCTP Association Statistics **AssocID/InstanceID: 0/1Current State: ESTABLISHEDControl ChunksSent: 623874 Rcvd: 660227Data Chunks SentTotal: 14235644 Retransmitted: 60487Ordered: 6369678 Unordered: 6371263Avg bundled: 18 Total Bytes: 640603980Data Chunks RcvdTotal: 14496585 Discarded: 1755575Ordered: 6369741 Unordered: 6371269Avg bundled: 18 Total Bytes: 652346325Out of Seq TSN: 3069353ULP DgramsSent: 12740941 Ready: 12740961 Rcvd: 12740941Table 73 describes the significant fields shown in the display.
Related Commands
show sctp errors
To display the error counts logged by the Stream Control Transmission Protocol (SCTP), use the show sctp errors command in privileged EXEC mode.
show sctp errors
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC (#)
Command History
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 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 sctp errors*** SCTP Error Statistics ****No SCTP errors logged.The following sample output shows a session that has SCTP errors:
Router# show sctp errors** SCTP Error Statistics **Invalid verification tag: 5Communication Lost: 64Destination Address Failed: 3Unknown INIT params rcvd: 16Invalid cookie signature: 5Expired cookie: 1Peer restarted: 1No Listening instance: 2Field descriptions are self-explanatory.
Related Commands
show sctp instance
To display Stream Control Transmission Protocol (SCTP) endpoint information for one specific currently configured instance, use the show sctp instance command in privileged EXEC mode.
show sctp instance instance-id
Syntax Description
instance-id
Instance identifier, which is defined as the transport ID (TransID) value in the output from the show sockets command.
Command Modes
Privileged EXEC (#)
Command History
12.4(11)T
This command was introduced.
12.4(15)T
This command was moved to the Cisco IP Application Services Command Reference.
Usage Guidelines
This command displays information for the currently configured instance with the ID specified in the command syntax. 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 (shown in the example output in the next section) are used for establishing incoming associations, the maximum number of associations allowed for this instance is shown, and a snapshot of each existing association is shown, if any exists.
Examples
The following sample output displays information for SCTP instance 0. In this example, instance 0 is using local port 1000 and has three current associations.
Router# show sctp instance 0Instance ID:0 Local port:1000 State:availableLocal addrs:10.1.0.2 10.2.0.2Default streams inbound:1 outbound:1Current associations: (max allowed:200)AssocID:0 State:ESTABLISHED Remote port:8989Dest addrs:10.6.0.4 10.5.0.4AssocID:1 State:ESTABLISHED Remote port:8990Dest addrs:10.6.0.4 10.5.0.4AssocID:2 State:ESTABLISHED Remote port:8991Dest addrs:10.6.0.4 10.5.0.4The following sample output displays information for SCTP instance 1. In this example, instance 1 is using local port 9191 and has no current associations.
Router# show sctp instance 1Instance ID:1 Local port:9191 State:availableLocal addrs:10.1.0.2 10.2.0.2Default streams inbound:1 outbound:1No current associations established for this instance.Max allowed:6Field descriptions are self-explanatory.
Related Commands
show sctp instances
To display information for each of the currently configured Stream Control Transmission Protocol (SCTP) instances, use the show sctp instances command in privileged EXEC mode.
show sctp instances
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC (#)
Command History
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, the maximum number of associations allowed for this instance is shown, and a snapshot of each existing association is shown, if any exists.
When you enter the show sctp instances command, you must type the complete word instances in the command syntax. If you try to enter an abbreviated form of this word, there will be a partial match that identifies the show sctp instance instance-id command.
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 sctp instances*** SCTP Instances ****Instance ID:0 Local port:8989Instance state:availableLocal addrs:10.1.0.2 10.2.0.2Default streams inbound:1 outbound:1Current associations: (max allowed:6)AssocID:0 State:ESTABLISHED Remote port:8989Dest addrs:10.6.0.4 10.5.0.4AssocID:1 State:ESTABLISHED Remote port:8990Dest addrs:10.6.0.4 10.5.0.4AssocID:2 State:ESTABLISHED Remote port:8991Dest addrs:10.6.0.4 10.5.0.4Instance ID:1 Local port:9191Instance state:availableLocal addrs:10.1.0.2 10.2.0.2Default streams inbound:1 outbound:1No current associations established for this instance.Max allowed:6Field descriptions are self-explanatory.
Related Commands
show sctp statistics
To display the overall statistics counts for Stream Control Transmission Protocol (SCTP) activity, use the show sctp statistics command in privileged EXEC mode.
show sctp statistics
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
This command displays the overall SCTP statistics accumulated since the last clear 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 SCTP statistics:
Router# show sctp statistics*** SCTP Overall Statistics ****Total Chunks Sent: 2097Total Chunks Rcvd: 2766Data Chunks Rcvd In Seq: 538Data Chunks Rcvd Out of Seq: 0Total Data Chunks Sent: 538Total Data Chunks Rcvd: 538Total Data Bytes Sent: 53800Total Data Bytes Rcvd: 53800Total Data Chunks Discarded: 0Total Data Chunks Retrans: 0Total SCTP Dgrams Sent: 1561Total SCTP Dgrams Rcvd: 2228Total ULP Dgrams Sent: 538Total ULP Dgrams Ready: 538Total ULP Dgrams Rcvd: 538Field descriptions are self-explanatory.
Related Commands
show sockets
To display IP socket information, use the show sockets command in user EXEC or privileged EXEC mode.
show sockets process-id [detail] [events]
Syntax Description
Command Default
IP socket information is not displayed.
Command Modes
User EXEC
Privileged EXECCommand History
Usage Guidelines
Use this command to display the number of sockets currently open and their distribution with respect to the transport protocol process specified by the process-id argument.
Use the optional detail keyword to display additional information including the local and remote port, protocol type, sub-type for Stream Control Transmission Protocol (SCTP) sockets, IP version, and socket state. Use the optional events keyword to display information about the status of the event model for the specified socket. The events keyword also displays the events being watched using the event model, events being watched using select calls, and any current events present on the socket.
Use the show processes command to display the list of running processes and their associated process IDs.
Examples
The following is sample output from the show sockets command when there are no sockets open for the specified process:
Router# show sockets 99There are no open sockets for this processThe following example displays the total number of open sockets for the specified process:
Router# show sockets 35Total open sockets - TCP:7, UDP:0, SCTP:0The following example shows how to display detailed information about open sockets:
Router# show sockets 35 detailFD LPort FPort Proto Type TransID0 5000 0 TCP STREAM 0x6654DEBCState: SS_ISBOUNDOptions: SO_ACCEPTCONN1 5001 0 TCP STREAM 0x6654E494State: SS_ISBOUNDOptions: SO_ACCEPTCONN2 5002 0 TCP STREAM 0x656710B0State: SS_ISBOUNDOptions: SO_ACCEPTCONN3 5003 0 TCP STREAM 0x65671688State: SS_ISBOUNDOptions: SO_ACCEPTCONN4 5004 0 TCP STREAM 0x65671C60State: SS_ISBOUNDOptions: SO_ACCEPTCONN5 5005 0 TCP STREAM 0x65672238State: SS_ISBOUNDOptions: SO_ACCEPTCONN6 5006 0 TCP STREAM 0x64C7840CState: SS_ISBOUNDOptions: SO_ACCEPTCONNTotal open sockets - TCP:7, UDP:0, SCTP:0The following example displays IP socket event information:
Router# show sockets 35 eventsEvents watched for this process: READFD Watched Present Select Present0 --- --- R-- R--Table 74 describes the significant fields shown in the displays.
Related Commands
show standby
To display Hot Standby Router Protocol (HSRP) information, use the show standby command in user EXEC or privileged EXEC mode.
show standby [type number [group]] [all | brief]
Syntax Description
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
Usage Guidelines
To specify a group, you must specify an interface type and number.
Examples
The following is sample output from the show standby command:
Router# show standbyEthernet0/1 - Group 1State is Active2 state changes, last state change 00:30:59Virtual IP address is 10.1.0.20Secondary virtual IP address 10.1.0.21Active virtual MAC address is 0004.4d82.7981Local virtual MAC address is 0004.4d82.7981 (bia)Hello time 4 sec, hold time 12 secNext hello sent in 1.412 secsGratuitous ARP 14 sent, next in 7.412 secsPreemption enabled, min delay 50 sec, sync delay 40 secActive router is localStandby router is 10.1.0.6, priority 75 (expires in 9.184 sec)Priority 95 (configured 120)Tracking 2 objects, 0 upDown Interface Ethernet0/2, pri 15Down Interface Ethernet0/3Group name is "HSRP1" (cfgd)Follow by groups:Et1/0.3 Grp 2 Active 10.0.0.254 0000.0c07.ac02 refresh 30 secs (next 19.666)Et1/0.4 Grp 2 Active 10.0.0.254 0000.0c07.ac02 refresh 30 secs (next 19.491)Group name is "HSRP1", advertisement interval is 34 secThe following is sample output from the show standby command when HSRP version 2 is configured:
Router# show standbyEthernet0/1 - Group 1 (version 2)State is SpeakVirtual IP address is 10.21.0.10Active virtual MAC address is unknownLocal virtual MAC address is 0000.0c9f.f001 (v2 default)Hello time 3 sec, hold time 10 secNext hello sent in 1.804 secsPreemption enabledActive router is unknownStandby router is unknownPriority 20 (configured 20)Group name is "hsrp-Et0/1-1" (default)Ethernet0/2 - Group 1State is SpeakVirtual IP address is 10.22.0.10Active virtual MAC address is unknownLocal virtual MAC address is 0000.0c07.ac01 (v1 default)Hello time 3 sec, hold time 10 secNext hello sent in 1.804 secsPreemption disabledActive router is unknownStandby router is unknownPriority 90 (default 100)Track interface Serial2/0 state Down decrement 10Group name is "hsrp-Et0/2-1" (default)The following is sample output from the show standby command with the brief keyword specified:
Router# show standby briefInterface Grp Prio P State Active addr Standby addr Group addrEt0 0 120 Init 10.0.0.1 unknown 10.0.0.12The following is sample output from the show standby command when HSRP MD5 authentication is configured:
Router# show standbyEthernet0/1 - Group 1State is Active5 state changes, last state change 00:17:27Virtual IP address is 10.21.0.10Active virtual MAC address is 0000.0c07.ac01Local virtual MAC address is 0000.0c07.ac01 (default)Hello time 3 sec, hold time 10 secNext hello sent in 2.276 secsAuthentication MD5, key-string, timeout 30 secsPreemption enabledActive router is localStandby router is unknownPriority 110 (configured 110)Group name is "hsrp-Et0/1-1" (default)The following is sample output from the show standby command when HSRP group shutdown is configured:
Router# show standbyEthernet0/0 - Group 1State is Init (tracking shutdown)3 state changes, last state change 00:30:59Track object 100 state UpTrack object 101 state DownTrack object 103 state UpThe following is sample output from the show standby command when HSRP BFD peering is enabled:
Router# show standbyEthernet0/0 - Group 2State is Listen2 state changes, last state change 01:18:18Virtual IP address is 10.0.0.1Active virtual MAC address is 0000.0c07.ac02Local virtual MAC address is 0000.0c07.ac02 (v1 default)Hello time 3 sec, hold time 10 secPreemption enabledActive router is 10.0.0.250, priority 120 (expires in 9.396 sec)Standby router is 10.0.0.251, priority 110 (expires in 8.672 sec)BFD enabledPriority 90 (configured 90)Group name is "hsrp-Et0/0-1" (default)The following is sample output from the show standby command used to display the state of the standby RP:
Router# show standbyGigabitEthernet3/25 - Group 1State is Init (standby RP, peer state is Active)Virtual IP address is 10.0.0.1Active virtual MAC address is unknownLocal virtual MAC address is 0000.0c07.ac01 (v1 default)Hello time 3 sec, hold time 10 secPreemption disabledActive router is unknownStandby router is unknownPriority 100 (default 100)Group name is "hsrp-Gi3/25-1" (default)Table 75 describes the significant fields shown in the displays.
Related Commands
show standby arp gratuitous
To display the number and configured interval of gratuitous Address Resolution Protocol (ARP) packets sent by Hot Standby Router Protocol (HSRP), use the show standby arp gratuitous command in user EXEC or privileged EXEC configuration mode.
show standby arp gratuitous [type number]
Syntax Description
Command Default
The number of user-configured gratuitous ARP packets is not displayed.
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
Usage Guidelines
This command displays the interface to which HSRP sends gratuitous ARP packets, the interval (in seconds) and the number. Gratuitous ARP packets are sent only when an HSRP group transitions to the Active state.
Examples
The following sample output displays information about HSRP gratuitous ARP packets:
Router# show standby arp gratuitousHSRP Gratuitous ARPInterface Interval CountEthernet0/0 3 2Related Commands
show standby capability
To display the limitation on how many virtual MAC addresses that some interfaces can listen to, use the show standby capability command in user EXEC or privileged EXEC mode.
show standby capability [type number]
Syntax Description
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
Usage Guidelines
HSRP allows up to 256 groups to be configured on each interface, but it is possible that the MAC address filter of the interface does not support that many entries. For example, Versatile Interface Processor (VIP) interfaces only support 32 MAC addresses in their MAC address filter. If more HSRP groups are created than there are address filter entries, then it is likely that the router will stop listening to packets sent to the MAC address of an active HSRP group.
Examples
The following is sample output from the show standby capability command:
Router# show standby capability7206VXR * indicates hardware may support HSRP|Interface Type H Potential Max GroupsFastEthernet0/0 18 DEC21140A * 256 (0x60194B00,0x60194BE8)FastEthernet1/0 18 DEC21140A * 256 (0x60194B00,0x60194BE8)Ethernet2/0 61 AmdP2 * 256 (0x601A252C,0x601A25E4)Ethernet2/1 61 AmdP2 * 256 (0x601A252C,0x601A25E4)Ethernet2/2 61 AmdP2 * 256 (0x601A252C,0x601A25E4)Ethernet2/3 61 AmdP2 * 256 (0x601A252C,0x601A25E4)Ethernet2/4 61 AmdP2 * 256 (0x601A252C,0x601A25E4)Ethernet2/5 61 AmdP2 * 256 (0x601A252C,0x601A25E4)Ethernet2/6 61 AmdP2 * 256 (0x601A252C,0x601A25E4)Ethernet2/7 61 AmdP2 * 256 (0x601A252C,0x601A25E4)ATM3/0 74 ENHANCED ATM PA * 256 LAN emulationTokenRing4/0 66 HAWKEYE * 3 HSRP TR functionaladdresses (0x6076A590)TokenRing4/1 66 HAWKEYE * 3 HSRP TR functionaladdresses (0x6076A590)TokenRing4/2 66 HAWKEYE * 3 HSRP TR functionaladdresses (0x6076A590)TokenRing4/3 66 HAWKEYE * 3 HSRP TR functionaladdresses (0x6076A590)Serial5/0 67 M4T -Serial5/1 67 M4T -Serial5/2 67 M4T -Serial5/3 67 M4T -FastEthernet6/0 18 DEC21140A * 256 (0x60194B00,0x60194BE8)VoIP-Null0 102 VoIP-Null -Table 76 describes the significant fields in the display.
show standby delay
To display Hot Standby Router Protocol (HSRP) information about delay periods, use the show standby delay command in user EXEC or privileged EXEC mode.
show standby delay [type number]
Syntax Description
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
Examples
The following is sample output from the show standby delay command:
Router# show standby delayInterface Minimum ReloadEthernet0/3 1 5Table 77 describes the significant fields shown in the display.
Related Commands
show standby internal
To display internal flags and conditions, use the show standby internal command in user EXEC or privileged EXEC mode.
show standby internal [type number]
Syntax Description
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
Examples
This example shows a configuration example and the output from the show standby internal command for the configuration:
interface Ethernet2/0ip address 10.0.0.254 255.255.0.0standby use-biastandby version 2standby 1 ip 10.0.0.1standby 1 timers 2 6standby 1 priority 110standby 1 preemptRouter# show standby internalGlobal Confg: 0000Et2/0 If hw AmdP2, State 0x210040Et2/0 If hw Confg: 0001, USEBIAEt2/0 If hw Flags: 0000Et2/0 If sw Confg: 0040, VERSIONEt2/0 If sw Flags: 0001, USEBIAEt2/0 Grp 1 Confg: 0072, IP_PRI, PRIORITY, PREEMPT, TIMERSEt2/0 Grp 1 Flags: 0000The above output shows internal flags and hardware and software information for Ethernet interface 2/0. The output shows that HSRP group 1 is configured for priority, preemption, and the standby timers and standby-use bia commands have been configured.
Related Commands
show standby neighbors
To display information about Hot Standby Router Protocol (HSRP) peer routers on an interface, use the show standby neighbors command in privileged EXEC mode.
show standby neighbors [interface-type interface-number]
Syntax Description
Command Default
HSRP neighbor information is displayed for all interfaces.
Command Modes
Privileged EXEC
Command History
Usage Guidelines
Use this command to display information about HSRP peer neighbors. This command displays the HSRP groups for which each neighbor is acting as the active and standby router and whether Bidirectional Forwarding Detection (BFD) peering is enabled for each neighbor.
Examples
The following example displays the HSRP neighbors on Ethernet interface 0/0. Neighbor 10.0.0.250 is active for group 2 and standby for groups 1 and 8, and is registered with BFD:
Router# show standby neighbors Ethernet0/0HSRP neighbors on Ethernet0/010.0.0.250Active groups: 2Standby groups: 1, 8BFD enabled10.0.0.251Active groups: 5, 8Standby groups: 2BFD enabled10.0.0.253No Active groupsNo Standby groupsBFD enabledThe following example displays information for all HSRP neighbors:
Router# show standby neighborsHSRP neighbors on FastEthernet2/010.0.0.2No active groupsStandby groups: 1BFD enabledHSRP neighbors on FastEthernet2/010.0.0.1Active groups: 1No standby groupsBFD enabledTable 78 describes the significant fields shown in the displays.
Related Commands
show standby redirect
To display Internet Control Message Protocol (ICMP) redirect information on interfaces configured with the Hot Standby Router Protocol (HSRP), use the show standby redirect command in user EXEC or privileged EXEC mode.
show standby redirect [ip-address | interface-type interface-number [active | passive | timers]]
Syntax Description
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
Examples
The following is sample output from the show standby direct command with no optional keywords:
Router# show standby redirectInterface Redirects Unknown Adv HolddownEthernet0/2 enabled enabled 30 180Ethernet0/3 enabled disabled 30 180Active Hits Interface Group Virtual IP Virtual MAC10.19.0.7 0 Ethernet0/2 3 10.19.0.13 0000.0c07.ac03local 0 Ethernet0/3 1 10.20.0.11 0000.0c07.ac01local 0 Ethernet0/3 2 10.20.0.12 0000.0c07.ac02Passive Hits Interface Expires in10.19.0.6 0 Ethernet0/2 151.800Table 79 describes the significant fields in the display.
The following is sample output from the show standby redirect command with a specific interface Ethernet 0/3:
Router# show standby redirect e0/3Interface Redirects Unknown Adv HolddownEthernet0/3 enabled disabled 30 180Active Hits Interface Group Virtual IP Virtual MAClocal 0 Ethernet0/3 1 10.20.0.11 0000.0c07.ac01local 0 Ethernet0/3 2 10.20.0.12 0000.0c07.ac02The following is sample output from the show standby redirect command showing all active routers on interface Ethernet 0/3:
Router# show standby redirect e0/3 activeActive Hits Interface Group Virtual IP Virtual MAClocal 0 Ethernet0/3 1 10.20.0.11 0000.0c07.ac01local 0 Ethernet0/3 2 10.20.0.12 0000.0c07.ac02The following is sample output from the show standby redirect ip-address command, where the IP address is the real IP address of the router:
Router# show standby redirect 10.19.0.7Active Hits Interface Group Virtual IP Virtual MAC10.19.0.7 0 Ethernet0/2 3 10.19.0.13 0000.0c07.ac03Related Commands
show standby
Displays the HSRP information.
standby redirects
Enables ICMP redirect messages to be sent when HSRP is configured on an interface.
show tcp
To display the status of Transmission Control Protocol (TCP) connections when Cisco IOS or Cisco IOS Software Modularity images re running, use the show tcp command in user EXEC or privileged EXEC mode.
show tcp [line-number] [tcb address]
Syntax Description
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
Examples
Example output varies between Cisco IOS software images and Cisco IOS Software Modularity software images. To view the appropriate output, choose one of the following sections:
•
Cisco IOS Software
The following is sample output that displays the status and option flags:
Router# show tcp...Status Flags: passive open, active open, retransmission timeout, app closedOption Flags: vrf id setIP Precedence value: 6...SRTT: 273 ms, RTTO: 490 ms, RTV: 217 ms, KRTT: 0 msminRTT: 0 ms, maxRTT: 300 ms, ACK hold: 200 msStatus Flags: active open, retransmission timeoutOption Flags: vrf id setIP Precedence value: 6Table 80 contains the types of flags, all possible command output enhancements, and descriptions. See Table 81 through Table 85 for descriptions of the other fields in the sample output.
The following is sample output from the show tcp command:
Router# show tcptty0, connection 1 to host ciderConnection state is ESTAB, I/O status: 1, unread input bytes: 0Local host: 172.31.232.17, Local port: 11184Foreign host: 172.31.1.137, Foreign port: 23Enqueued packets for retransmit: 0, input: 0, saved: 0Event Timers (current time is 67341276):Timer: Retrans TimeWait AckHold SendWnd KeepAliveStarts: 30 0 32 0 0Wakeups: 1 0 14 0 0Next: 0 0 0 0 0iss: 67317172 snduna: 67317228 sndnxt: 67317228 sndwnd: 4096irs: 1064896000 rcvnxt: 1064897597 rcvwnd: 2144 delrcvwnd: 0SRTT: 317 ms, RTTO: 900 ms, RTV: 133 ms, KRTT: 0 msminRTT: 4 ms, maxRTT: 300 ms, ACK hold: 300 msFlags: higher precedence, idle user, retransmission timeoutDatagrams (max data segment is 536 bytes):Rcvd: 41 (out of order: 0), with data: 34, total data bytes: 1596Sent: 57 (retransmit: 1), with data: 35, total data bytes: 55Table 81 describes the first five lines of output shown in the above display.
Note
The following line of output shows the current elapsed time according to the system clock of the local host. The time shown is the number of milliseconds since the system started.
Event Timers (current time is 67341276):The following lines of output display the number of times that various local TCP timeout values were reached during this connection. In this example, the local host re-sent data 30 times because it received no response from the remote host, and it sent an acknowledgment many more times because there was no data.
Timer: Retrans TimeWait AckHold SendWnd Keepalive GiveUp PmtuAgerStarts: 30 0 32 0 0 0 0Wakeups: 1 0 14 0 0 0 0Next: 0 0 0 0 0 0 0Table 82 describes the fields in the above lines of output.
The following lines of output display the sequence numbers that TCP uses to ensure sequenced, reliable transport of data. The local host and remote host each use these sequence numbers for flow control and to acknowledge receipt of datagrams.
iss: 67317172 snduna: 67317228 sndnxt: 67317228 sndwnd: 4096irs: 1064896000 rcvnxt: 1064897597 rcvwnd: 2144 delrcvwnd: 0Table 83 describes the fields shown in the display above.
The following lines of output display values that the local host uses to keep track of transmission times so that TCP can adjust to the network that it is using.
SRTT: 317 ms, RTTO: 900 ms, RTV: 133 ms, KRTT: 0 msminRTT: 4 ms, maxRTT: 300 ms, ACK hold: 300 msFlags: higher precedence, idle user, retransmission timeoutTable 84 describes the significant fields shown in the output above.
Note
The following lines of output display the number of datagrams that are transported with data.
Datagrams (max data segment is 536 bytes):Rcvd: 41 (out of order: 0), with data: 34, total data bytes: 1596Sent: 57 (retransmit: 1), with data: 35, total data bytes: 55Table 85 describes the significant fields shown in the last lines of the show tcp command output.
The following is sample output from the show tcp tcb command that displays detailed information by hexadecimal address about an ECN-enabled connection:
Router# show tcp tcb 0x62CD2BB8Connection state is LISTEN, I/O status: 1, unread input bytes: 0Connection is ECN enabledLocal host: 10.10.10.1, Local port: 179Foreign host: 10.10.10.2, Foreign port: 12000Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)Event Timers (current time is 0x4F31940):Timer Starts Wakeups NextRetrans 0 0 0x0TimeWait 0 0 0x0AckHold 0 0 0x0SendWnd 0 0 0x0KeepAlive 0 0 0x0GiveUp 0 0 0x0PmtuAger 0 0 0x0DeadWait 0 0 0x0iss: 0 snduna: 0 sndnxt: 0 sndwnd: 0irs: 0 rcvnxt: 0 rcvwnd: 4128 delrcvwnd: 0SRTT: 0 ms, RTTO: 2000 ms, RTV: 2000 ms, KRTT: 0 msminRTT: 60000 ms, maxRTT: 0 ms, ACK hold: 200 msFlags: passive open, higher precedence, retransmission timeoutTCB is waiting for TCP Process (67)Datagrams (max data segment is 516 bytes):Rcvd: 6 (out of order: 0), with data: 0, total data bytes: 0Sent: 0 (retransmit: 0, fastretransmit: 0), with data: 0, total databytes: 0Cisco IOS Software Modularity
The following is sample output from the show tcp tcb command from a Software Modularity image:
Router# show tcp tcb 0x1059C10Connection state is ESTAB, I/O status: 0, unread input bytes: 0Local host: 10.4.2.32, Local port: 23Foreign host: 10.4.2.39, Foreign port: 11000VRF table id is: 0Current send queue size: 0 (max 65536)Current receive queue size: 0 (max 32768) mis-ordered: 0 bytesEvent Timers (current time is 0xB9ACB9):Timer Starts Wakeups Next(msec)Retrans 6 0 0SendWnd 0 0 0TimeWait 0 0 0AckHold 8 4 0KeepAlive 11 0 7199992PmtuAger 0 0 0GiveUp 0 0 0Throttle 0 0 0irs: 1633857851 rcvnxt: 1633857890 rcvadv: 1633890620 rcvwnd: 32730iss: 4231531315 snduna: 4231531392 sndnxt: 4231531392 sndwnd: 4052sndmax: 4231531392 sndcwnd: 10220SRTT: 84 ms, RTTO: 650 ms, RTV: 69 ms, KRTT: 0 msminRTT: 0 ms, maxRTT: 200 ms, ACK hold: 200 msKeepalive time: 7200 sec, SYN wait time: 75 secGiveup time: 0 ms, Retransmission retries: 0, Retransmit forever: FALSEState flags: noneFeature flags: NagleRequest flags: noneWindow scales: rcv 0, snd 0, request rcv 0, request snd 0Timestamp option: recent 0, recent age 0, last ACK sent 0Datagrams (in bytes): MSS 1460, peer MSS 1460, min MSS 1460, max MSS 1460Rcvd: 14 (out of order: 0), with data: 10, total data bytes: 38Sent: 10 (retransmit: 0, fastretransmit: 0), with data: 5, total data bytes: 76Header prediction hit rate: 72 %Socket states: SS_ISCONNECTED, SS_PRIVRead buffer flags: SB_WAIT, SB_SEL, SB_DEL_WAKEUPRead notifications: 4Write buffer flags: SB_DEL_WAKEUPWrite notifications: 0Socket status: 0Related Commands
show tcp brief
To display a concise description of TCP connection endpoints, use the show tcp brief command in user EXEC or privileged EXEC mode.
show tcp brief [all | numeric]
Syntax Description
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
Examples
The following is sample output from the show tcp brief command while a user is connected to the system by using Telnet:
Router# show tcp briefTCB Local Address Foreign Address (state)609789AC Router.cisco.com.23 cider.cisco.com.3733 ESTABThe following example shows the IP activity by using the numeric keyword to display the addresses in IP format.
Router# show tcp brief numericTCB Local Address Foreign Address (state)6523A4FC 10.1.25.3.11000 10.1.25.3.23 ESTAB65239A84 10.1.25.3.23 10.1.25.3.11000 ESTAB653FCBBC *.1723 *.* LISTENTable 86 describes the significant fields shown in the display.
Related Commands
show tcp statistics
To display TCP statistics, use the show tcp statistics command in user EXEC or privileged EXEC mode.
show tcp statistics
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
Usage Guidelines
Cisco IOS Software Modularity
There are three transport protocols used in Software Modularity: TCP, UDP, and raw IP. The transport protocol statistics are generally counters, though some are averages and time stamps. Use the show tcp statistics command to display the TCP statistics and use the clear tcp statistics command to reset the TCP statistics. Many of the statistics are relevant to all of the transport protocols. To view the other transport protocol statistics used in Software Modularity, see the show raw statistics and show udp statistics commands.
Examples
Example output varies between Cisco IOS software images and Cisco IOS Software Modularity software images. To view the appropriate output, choose one of the following sections:
•
Cisco IOS Software
The following is sample output from the show tcp statistics command:
Router# show tcp statisticsRcvd: 210 Total, 0 no port0 checksum error, 0 bad offset, 0 too short132 packets (26640 bytes) in sequence5 dup packets (502 bytes)0 partially dup packets (0 bytes)0 out-of-order packets (0 bytes)0 packets (0 bytes) with data after window0 packets after close0 window probe packets, 0 window update packets0 dup ack packets, 0 ack packets with unsend data69 ack packets (3044 bytes)Sent: 175 Total, 0 urgent packets16 control packets (including 1 retransmitted)69 data packets (3029 bytes)0 data packets (0 bytes) retransmitted73 ack only packets (49 delayed)0 window probe packets, 17 window update packets7 Connections initiated, 1 connections accepted, 8 connections established8 Connections closed (including 0 dropped, 0 embryonic dropped)1 Total rxmt timeout, 0 connections dropped in rxmt timeout0 Keepalive timeout, 0 keepalive probe, 0 Connections dropped in keepaliveTable 87 describes the significant fields shown in the display.
Cisco IOS Software Modularity
The following is sample output from the show tcp statistics command when a Software Modularity image is running under Cisco IOS Release 12.2(18)SXF4:
Router# show tcp statisticsCurrent packet level is 0 (Clear)Rcvd: 0 Total, 0 no port0 checksum error, 0 bad offset, 0 too short0 packets (0 bytes) in sequence0 dup packets (0 bytes)0 partially dup packets (0 bytes)0 out-of-order packets (0 bytes)0 packets (0 bytes) with data after window0 packets after close0 window probe packets, 0 window update packets0 dup ack packets, 0 ack packets for unsent data0 ack packets (0 bytes)0 packets dropped due to PAWS0 packets dropped due to receive packet limits0 packets dropped due to receive byte limitsSent: 0 Total, 0 urgent packets0 control packets (including 0 retransmitted)0 data packets (0 bytes)0 data packets (0 bytes) retransmitted0 data packets (0 bytes) fastretransmitted0 Sack retransmitted bytes, 0 Sack skipped bytes0 ack only packets (0 delayed)0 window probe packets, 0 window update packets0 Connections initiated, 0 connections accepted, 0 connections established0 Connections closed (including 0 dropped, 0 embryonic dropped)0 Total rxmt timeout, 0 connections dropped in rxmt timeout0 RTO, 0 KRTO (milliseconds)0 VJ SRTT, 0 variance (milliseconds)0 min RTT, 0 max RTT (milliseconds)0 Keepalive timeout, 0 keepalive probe, 0 Connections dropped in keepalive0 increase MSS, 0 decrease MSS15 Open sockets0 Timer interrupts0 Packets used by socket I/O0 Packets used by TCP reassembly0 Packets recovered after starvation0 Packet memory warnings0 Packet memory alarms0 Packet allocation errors0 Packet to octet switches due to send flow control0 Packet to octet switches due to partial ACKs0 Packet to octet switches due to inadequate resources0 Output function calls0 Truncated write I/O vectors0 Transmission pulse errors0 Packet punts from IP 0 Packet punts to IP0 Packet punts from application0 Packet punts to applicationTable 88 describes the significant fields shown in the display that are different from Table 87.
Related Commands
clear tcp statistics
Clears TCP statistics.
show raw statistics
Displays raw IP transport protocol statistics.
show udp statistics
Displays UDP transport protocol statistics.
show time-range ipc
To display the statistics about the time-range interprocess communications (IPC) messages between the Route Processor and line card, use the show time-range ipc command in user EXEC or privileged EXEC mode.
show time-range ipc
Syntax Description
This command has no argument or keywords.
Defaults
No default behavior or values.
Command Modes
User EXEC
Privileged EXECCommand History
12.2(2)T
This command was introduced.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
Usage Guidelines
The debug time-range ipc EXEC command must be enabled for the show time-range ipc command to display the time-range IPC message statistics.
Examples
The following is sample output from the show time-range ipc command:
Router# show time-range ipcRP Time range Updates Sent :3RP Time range Deletes Sent :2Table 89 describes the significant fields shown in the display.
Related Commands
show track
To display information about objects that are tracked by the tracking process, use the show track command in privileged EXEC mode.
show track [object-number [brief] | interface [brief] | ip route [brief] | resolution | timers]
Syntax Description
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
Use this command to display information about objects that are tracked by the tracking process. When no arguments or keywords are specified, information for all objects is displayed.
Examples
The following example shows information about the state of IP routing on the interface that is being tracked:
Router# show track 1Track 1Interface Ethernet0/2 ip routingIP routing is Down (no IP addr)1 change, last change 00:01:08Tracked by:HSRP Ethernet0/3 1The following example shows information about the line-protocol state on the interface that is being tracked:
Router# show track 1Track 1Interface Ethernet0/1 line-protocolLine protocol is Up1 change, last change 00:00:05Tracked by:HSRP Ethernet0/3 1The following example shows information about the reachability of a route that is being tracked:
Router# show track 1Track 1IP route 10.16.0.0 255.255.0.0 reachabilityReachability is Up (RIP)1 change, last change 00:02:04First-hop interface is Ethernet0/1Tracked by:HSRP Ethernet0/3 1The following example shows information about the threshold metric of a route that is being tracked:
Router# show track 1Track 1IP route 10.16.0.0 255.255.0.0 metric thresholdMetric threshold is Up (RIP/6/102)1 change, last change 00:00:08Metric threshold down 255 up 254First-hop interface is Ethernet0/1Tracked by:HSRP Ethernet0/3 1The following example shows the object type, the interval in which it is polled, and the time until the next poll:
Router# show track timersObject type Poll Interval Time to next pollinterface 1 expiredip route 30 29.364The following example shows the state of the IP SLAs tracking:
Router# show track 50Track 50IP SLA 400 stateState is Up1 change, last change 00:00:23Delay up 60 secs, down 30 secsLatest operation return code: UnknownThe following example shows whether a route is reachable:
Router# show track 3Track 3IP SLA 1 reachabilityReachability is Up1 change, last change 00:00:47Latest operation return code: over thresholdLatest RTT (millisecs) 4Tracked by:HSRP Ethernet0/1 3Table 90 describes the significant fields shown in the displays.
The following output shows that there are two objects. Object 1 has been configured with a weight of 10 "down," and object 2 has been configured with a weight of 20 "up." Object 1 is down (expressed as 0/10) and object 2 is up. The total weight of the tracked list is 20 with a maximum of 30 (expressed as 20/30). The "up" threshold is 20, so the list is "up."
Router# show trackTrack 6List threshold weightThreshold weight is Up (20/30)1 change, last change 00:00:08object 1 Down (0/10)object 2 weight 20 Up (20/30)Threshold weight down 10 up 20Tracked by:HSRP Ethernet0/3 1The following example shows information about the Boolean configuration:
Router# show trackTrack 3List boolean andBoolean AND is Down1 change, last change 00:00:08object 1 not Upobject 2 DownTracked by:HSRP Ethernet0/3 1Table 91 describes the significant fields shown in the displays.
The following example shows information about a stub object that has been created to be tracked using Embedded Event Manager (EEM):
Router# show trackTrack 1Stub-objectState is Up1 change, last change 00:00:04, by UndefinedThe following example shows information about a stub object when the brief keyword is used:
Router# show track briefTrack Object Parameter Value Last Change1 Stub-object Undefined Up 00:00:12The following example shows information about the line-protocol state on an interface that is being tracked and which has carrier-delay detection enabled:
Router# show trackTrack 101Interface Ethernet1/0 line-protocolLine protocol is Down (carrier-delay)1 change, last change 00:00:03Table 92 describes the significant fields shown in the displays.
Table 93 describes the significant fields shown in the displays.
Related Commands
show udp
To display IP socket information about User Datagram Protocol (UDP) processes, use the show udp command in user EXEC or privileged EXEC mode.
show udp [detail]
Syntax Description
Command Default
IP socket information about UDP processes is not displayed.
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
Usage Guidelines
Use this command to verify that the UDP socket being used is opening correctly. If there is a local and remote endpoint, a connection is established with the ports indicated.
Examples
The following is sample output from the show udp command with the detail keyword specified:
Router# show udp detailProto Remote Port Local Port In Out Stat TTY OutputIF17 10.0.0.0 0 10.0.21.70 67 0 0 2211 0Queues: output 0input 0 (drops 0, max 50, highwater 0)Proto Remote Port Local Port In Out Stat TTY OutputIF17 10.0.0.0 0 10.0.21.70 2517 0 0 11 0Queues: output 0input 0 (drops 0, max 50, highwater 0)Proto Remote Port Local Port In Out Stat TTY OutputIF17 10.0.0.0 0 10.0.21.70 5000 0 0 211 0Queues: output 0input 0 (drops 0, max 50, highwater 0)Proto Remote Port Local Port In Out Stat TTY OutputIF17 10.0.0.0 0 10.0.21.70 5001 0 0 211 0Queues: output 0input 0 (drops 0, max 50, highwater 0)Proto Remote Port Local Port In Out Stat TTY OutputIF17 10.0.0.0 0 10.0.21.70 5002 0 0 211 0Queues: output 0input 0 (drops 0, max 50, highwater 0)Proto Remote Port Local Port In Out Stat TTY OutputIF17 10.0.0.0 0 10.0.21.70 5003 0 0 211 0Queues: output 0input 0 (drops 0, max 50, highwater 0)Proto Remote Port Local Port In Out Stat TTY OutputIF17 10.0.0.0 0 10.0.21.70 5004 0 0 211 0Queues: output 0input 0 (drops 0, max 50, highwater 0)Table 94 describes the significant fields shown in the display.
Related Commands
show vrrp
To display a brief or detailed status of one or all configured Virtual Router Redundancy Protocol (VRRP) groups on the router, use the show vrrp command in privileged EXEC mode.
show vrrp [all | brief]
Syntax Description
all
(Optional) Provides VRRP group information about all VRRP groups, including groups in a disabled state.
brief
(Optional) Provides a summary view of the group information.
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
If no group is specified, all groups are displayed.
Examples
The following is sample output from the show vrrp command:
Router# show vrrpEthernet1/0 - Group 1State is MasterVirtual IP address is 10.2.0.10Virtual MAC address is 0000.5e00.0101Advertisement interval is 3.000 secPreemption is enabledmin delay is 0.000 secPriority 100Track object 1 state down decrement 15Master Router is 10.2.0.1 (local), priority is 100Master Advertisement interval is 3.000 secMaster Down interval is 9.609 secEthernet1/0 - Group 2State is MasterVirtual IP address is 10.0.0.20Virtual MAC address is 0000.5e00.0102Advertisement interval is 1.000 secPreemption is enabledmin delay is 0.000 secPriority 95Master Router is 10.0.0.1 (local), priority is 95Master Advertisement interval is 1.000 secMaster Down interval is 3.628 secThe following sample output shows the MD5 authentication for a VRRP group using a key string:
Router# show vrrpEthernet0/1 - Group 1State is MasterVirtual IP address is 10.21.0.10Virtual MAC address is 0000.5e00.0101Advertisement interval is 1.000 secPreemption is enabledmin delay is 0.000 secPriority is 100Authentication MD5, key-stringMaster Router is 10.21.0.1 (local), priority is 100Master Advertisement interval is 1.000 secMaster Down interval is 3.609 secThe following is sample output from the show vrrp command in Cisco IOS Release 12.2(33)SRC or later releases, displaying peer RP state information:
Router# show vrrpEthernet0/0 - Group 1State is Init (standby RP, peer state is Master)Virtual IP address is 172.24.1.1Virtual MAC address is 0000.5e00.0101Advertisement interval is 1.000 secPreemption enabledPriority is 255Master Router is 172.24.1.1 (local), priority is 255Master Advertisement interval is 1.000 secMaster Down interval is 3.003 secTable 95 describes the significant fields shown in the displays.
The following is sample output from the show vrrp command with the brief keyword:
Router# show vrrp briefInterface Grp Prio Time Own Pre State Master addr Group addrEthernet1/0 1 100 3609 P Master 10.0.0.4 10.0.0.10Ethernet1/0 2 105 3589 P Master 10.0.0.4 10.0.0.20Table 96 describes the fields shown in the display.
Related Commands
vrrp ip
Enables VRRP on an interface and identifies the IP address of the virtual router.
show vrrp interface
To display the Virtual Router Redundancy Protocol (VRRP) groups and their status on a specified interface, use the show vrrp interface command in user EXEC or privileged EXEC mode.
show vrrp interface type number [brief]
Syntax Description
type
Interface type.
number
Interface number.
brief
(Optional) Provides a summary view of the group information.
Command Modes
User EXEC (>)
Privileged EXEC (#)Command History
Examples
The following is sample output from the show vrrp interface command:
Router# show vrrp interface ethernet 1/0Ethernet1/0 - Group 1State is MasterVirtual IP address is 10.2.0.10Virtual MAC address is 0000.5e00.0101Advertisement interval is 3.000 secPreemption enabled, delay min 4 secsPriority is 100Master Router is 10.2.0.1 (local), priority is 100Master Advertisement interval is 3.000 secMaster Down interval is 9.609 secEthernet1/0 - Group 2State is MasterVirtual IP address is 10.0.0.20Virtual MAC address is 0000.5e00.0102Advertisement interval is 1.000 secPreemption enabled, delay min 2 secPriority is 95Authentication MD5, key-stringMaster Router is 10.0.0.1 (local), priority is 95Master Advertisement interval is 1.000 secMaster Down interval is 3.628 secTable 97 describes the significant fields shown in the display.
Related Commands
snmp-server enable traps slb
To enable IOS SLB traps for real- and virtual-server state changes, use the snmp-server enable traps slb command in global configuration mode. To disable the traps use the no form of this command.
snmp-server enable traps slb {real | virtual}
no snmp-server enable traps slb {real | virtual}
Syntax Description
real
Enables traps for real server state changes.
virtual
Enables traps for virtual server state changes.
Defaults
IOS SLB traps for real- and virtual-server state changes are not enabled.
Command Modes
Global configuration (config)
Command History
Examples
The following example enables IOS SLB traps for real server state changes:
Router(config)# snmp-server enable traps slb realstandby arp gratuitous
To configure the number of gratuitous Address Resolution Protocol (ARP) packets sent by a Hot Standby Router Protocol (HSRP) group when it transitions to the active state, and how often the ARP packets are sent, use the standby arp gratuitous command in interface configuration mode. To configure HSRP to send the default number of gratuitous of ARP packets at the default interval when an HSRP group changes to the active state, use the no form of this command.
standby arp gratuitous [count number] [interval seconds]
no standby arp gratuitous
Syntax Description
Command Default
HSRP sends one gratuitous ARP packet when a group becomes active, and then another two and four seconds later.
Command Modes
Interface configuration (config-if)
Command History
Usage Guidelines
You can configure HSRP to send a gratuitous ARP packet from one or more HSRP active groups. By default, HSRP sends one gratuitous ARP packet when a group becomes active, and then another two and four seconds later.
Use the standby arp gratuitous command in interface configuration mode to configure the number of gratuitous ARP packets sent by an Active HSRP group, and how often they are sent. The count and interval keywords can be specified in any order. If both the count and interval keywords are set to their default values, the standby arp gratuitous command does not appear in the running configuration.
Use the standby send arp command in EXEC mode to configure HSRP to send a single gratuitous ARP packet when an HSRP group becomes active.
Examples
The following example shows how to configure HSRP to send three gratuitous ARP packets every 4 seconds:
Router(config-if)# standby arp gratuitous count 3 interval 4Related Commands
standby authentication
To configure an authentication string for the Hot Standby Router Protocol (HSRP), use the standby authentication command in interface configuration mode. To delete an authentication string, use the no form of this command.
standby [group-number] authentication {text string | md5 {key-string [0 | 7] key [timeout seconds] | key-chain name-of-chain}}
no standby [group-number] authentication {text string | md5 {key-string [0 | 7] key [timeout seconds] | key-chain name-of-chain}}
Syntax Description
Command Default
No text authentication string is configured.
Command Modes
Interface configuration (config-if)
Command History
