Displaying IS-IS statistics

Use one or more of the following commands to verify IS-IS information. The commands do not have to be entered in this order.

Enter the show isis command.

device# show isis

IS-IS Routing Protocol Operation State: Enabled
IS-Type: Level-1-2
System Id: 768e.f805.5812
Manual area address(es): 11
Level-1-2 Database State: On
Administrative Distance 115
Maximum Paths 8
Default redistribution metric 0
Default link metric for level-1 0 (conf)/ 10 (adv)
Default link metric for level-2 0 (conf)/ 10 (adv)
Protocol Routes Redistributed into IS-IS: None
Number of Routes Redistributed into IS-IS: 0
Level-1 Auth-mode: None
Level-2 Auth-mode: None
Metric Style Supported for Level-1: Narrow
Metric Style Supported for Level-2: Narrow
Graceful-Restart Helper Support: Enabled
ISIS Partial SPF Optimizations: Enabled
Timers:
L1 SPF: Max-wait 5s Init-wait 5000ms Second-wait 5000ms
L2 SPF: Max-wait 5s Init-wait 5000ms Second-wait 5000ms
L1 SPF is not scheduled
L2 SPF is not scheduled
PSPF: Max-wait 5000ms Init-wait 2000ms Second-wait 5000ms
PSPF is not scheduled
LSP: max-lifetime 1200s refresh-interval 900s gen-interval 10s
retransmit-interval 5s, lsp-interval 33ms
SNP: csnp-interval 10s psnp-interval 2s
Global Hello Padding: Enabled
Global Hello Padding For Point to Point Circuits: Enabled
Ptpt Three Way HandShake Mechanism: Enabled
BGP Ipv4 Converged: False BGP Ipv6 Converged: False
IS-IS Traffic Engineering Support: Disabled
No ISIS Shortcuts Configured
BFD: Disabled, BFD HoldoverInterval: 0
NSR: Disabled
LSP-SYNC: Not Globally Enabled

This example output displays general IS-IS information..

Enter the show isis config command.
```
device# show isis config

router isis
net 11.768e.f805.5812.00
address-family ipv4 unicast
!
address-family ipv6 unicast
!
```
This example shows the global IS-IS configuration commands that are in effect on the device..

Enter the show isis counts command.

device# show isis counts

Area Mismatch: 0
Max Area Mismatch: 0
System ID Length Mismatch: 0
LSP Sequence Number Skipped: 0
LSP Max Sequence Number Exceeded: 0
Level-1 Database Overload: 1
Level-2 Database Overload: 0
Our LSP Purged: 2

This example shows IS-IS error statistics..

Enter the show isis hostname command.

device# show isis hostname

Total number of entries in IS-IS Hostname Table: 1
System ID Hostname * = local IS
----------------------------------------------------
* 768e.f805.5812 R1

This example shows the router-name-to-system-ID mapping table entries for the device.

Enter the show isis interface command.

device# show isis interface

Total number of IS-IS Interfaces: 11
Interface: Ve 301
Circuit State: UP Circuit Mode: Level 1-2
Circuit Type: BCAST Passive State: FALSE
Circuit Number: 2, MTU: 1500
Level-1 Auth-mode: NONE
Level-2 Auth-mode: NONE
Level-1 Metric: 10, Level-1 Priority: 64
Level-1 Hello Interval: 10, Level-1 Hello Multiplier: 3
Level-1 Designated IS: R1-02 Level-1 DIS Changes: 2
Level-2 Metric: 10, Level-2 Priority: 64
Level-2 Hello Interval: 10, Level-2 Hello Multiplier: 3
Level-2 Designated IS: R1-02 Level-2 DIS Changes: 2
Next IS-IS LAN Level-2 Hello in 11 seconds
Number of active Level-2 adjacencies: 0
Next IS-IS LAN Level-1 Hello in 1 seconds
Number of active Level-1 adjacencies: 0
Circuit State Changes: 1 Circuit Adjacencies State Changes: 0
Rejected Adjacencies: 0
Circuit Authentication L1 failures: 0
Circuit Authentication L2 failures: 0
Bad LSPs: 0
Control Messages Sent: 7577 Control Messages Received: 0
Hello Padding: Enabled
IP Enabled: TRUE
IP Addresses:
11.2.1.1/30
IPv6 Enabled: FALSE
MPLS TE Enabled: FALSE
BFD Enabled: FALSE
LDP-SYNC: Disabled, State:
…

This example shows information about IS-IS interfaces for a device.

Enter the show isis interface command, using the brief keyword.

device# show isis interface brief

Total number of IS-IS Interfaces: 11
Interface Type State Mode Passive MTU UpAdj DIS StateChg AdjStateChg
Ve 301 BCAST UP L12 FALSE 1500 0 None 1 0
Ve 302 BCAST UP L12 FALSE 1500 0 None 1 0
Ve 303 BCAST UP L12 FALSE 1500 0 None 1 0
Ve 304 BCAST UP L12 FALSE 1500 0 None 1 0
Ve 305 BCAST UP L12 FALSE 1500 0 None 1 0
Ve 306 BCAST UP L12 FALSE 1500 0 None 1 0
Ve 307 BCAST UP L12 FALSE 1500 0 None 1 0
Ve 308 BCAST UP L12 FALSE 1500 0 None 1 0
Ve 309 BCAST UP L12 FALSE 1500 0 None 1 0
Ve 310 BCAST UP L12 FALSE 1500 0 None 1 0
Lo 1 BCAST UP L12 TRUE 0 0 None 1 0

This example shows summarized information about IS-IS interfaces for a device.

Enter the show isis neighbor command.
```
device# show isis neighbor
```
This example shows IS-IS neighbor information.

Enter the show isis spf-log command.

device# show isis spf-log

ISIS Level-1 SPF Log
When Duration Nodes Count Last-Trigger-LSP Trigger
10h34m13s 0ms 1 10 R1.00-00 Interface State Change
10h34m38s 0ms 1 2 R1.00-00 Interface Config Change
10h34m43s 0ms 1 18 R1.00-00 Interface Config Change
10h34m48s 0ms 1 5 R1.00-00 Interface State Change
ISIS Level-2 SPF Log
When Duration Nodes Count Last-Trigger-LSP Trigger
10h34m13s 0ms 1 10 R1.00-00 Interface State Change
10h34m38s 0ms 1 2 R1.00-00 Interface Config Change
10h34m43s 0ms 1 18 R1.00-00 Interface Config Change
10h34m48s 0ms 1 5 R1.00-00 Interface State Change

This example shows IS-IS link-state packet (LSP) logging information.

Enter the show isis traffic command.

show isis traffic

                             Message Received     Message Sent
 Level-1 Hellos              0                    44912
 Level-2 Hellos              0                    44927
 PTP Hellos                  0                    0
 Level-1 LSP                 0                    0
 Level-2 LSP                 0                    0
 Level-1 CSNP                0                    0
 Level-2 CSNP                0                    0
 Level-1 PSNP                0                    0
 Level-2 PSNP                0                    0

This example shows information about IS-IS packet counts..