Displaying IS-IS Statistics and Counters

Use the following procedure to display the IS-IS statistics and counters.

Procedure

  1. Display IS-IS system statistics:

    show isis statistics

  2. Display IS-IS interface counters:

    show isis int-counters

  3. Display IS-IS level 1 control packet counters:
    show isis int-l1-cntl-pkts
    Note

    Note

    The switch uses level 1 IS-IS. The switch does not support level 2 IS-IS. The command show isis int-l2-contl-pkts is not supported because the IEEE 802.1aq standard currently only defines the use of one hierarchy, Level 1.

  4. Clear IS-IS statistics:

    clear isis stats [error-counters] [packet-counters]

Example

Switch:1# show isis statistics
================================================================================
                               ISIS System Stats
================================================================================

LEVEL    CORR   AUTH   AREA   MAX SEQ   SEQ NUM  OWN LSP  BAD ID  PART   LSP    DB 
			 LSPs  FAILS  DROP   EXCEEDED   SKIPS    PURGE    LEN    CHANGES OLOAD  
--------------------------------------------------------------------------------
Level-1  0      0      0      0        1        0        0       0       0      

Switch:1# show isis int-counters
================================================================================
                            ISIS Interface Counters
================================================================================

IFIDX    LEVEL   AUTH     ADJ          INIT      REJ     ID LEN  MAX AREA LAN    DIS 
                 FAILS    CHANGES 		  FAILS   	ADJ                       CHANGES 
--------------------------------------------------------------------------------
Mlt2     Level 1-2  0        1       		0       0       	0       0        0       
Port1/21 Level 1-2  0        1       		0       0       	0       0        0   


Switch:1# show isis int-l1-cntl-pkts
================================================================================
                        ISIS L1 Control Packet counters
================================================================================
IFIDX         DIRECTION     HELLO        LSP          CSNP         PSNP        

--------------------------------------------------------------------------------
Mlt2           Transmitted   	13346        231          2            229         
Mlt2           Received      	13329        230          1            230         
Port1/21       Transmitted   	13340        227          2            226         
Port1/21       Received      	13335        226          1            227

Variable Definitions

The following table defines parameters for the clear isis stats command.

Variable

Value

error-counters

Clears IS-IS stats error-counters.

packet-counters

Clears IS-IS stats packet-counters.

Job Aid

show isis statistics

The following table describes the fields in the output for the show isis statistics command.

Parameter

Description

LEVEL

Shows the level of the IS-IS interface.

CORR LSPs

Shows the number of corrupted LSPs detected.

AUTH FAILS

Shows the number of times authentication has failed on the global level.

AREA DROP

Shows the number of manual addresses dropped from the area.

MAX SEQ EXCEEDED

Shows the number of attempts to exceed the maximum sequence number.

SEQ NUM SKIPS

Shows the number of times the sequence number was skipped.

OWN LSP PURGE

Shows how many times the local LSP was purged.

BAD ID LEN

Shows the number of ID field length mismatches.

PART CHANGES

Shows the number of partition link changes.

LSP DB OLOAD

Show the number of times the switch was in the overload state.

show isis int-counters

The following table describes the fields in the output for the show isis int-counters command.

Parameter

Description

IFIDX

Shows the interface index for the Ethernet or MLT interface.

LEVEL

Shows the level of the IS-IS interface.

AUTH FAILS

Shows the number of times authentication has failed per interface.

ADJ CHANGES

Shows the number of times the adjacencies have changed.

INIT FAILS

Shows the number of times the adjacency has failed to establish.

REJ ADJ

Shows the number of times the adjacency was rejected by another router.

ID LEN

Shows the ID field length mismatches.

MAX AREA

Shows the maximum area address mismatches.

LAN DIS CHANGES

Shows the number of times the DIS has changed.

show isis int-l1-cntl-pkts

The following table describes the fields in the output for the show isis int-l1-cntl-pkts command.

Parameter

Description

IFIDX

Shows the interface index for the Ethernet or MLT interface.

DIRECTION

Shows the packet flow (Transmitted or Received).

HELLO

Shows the amount of interface-level Hello packets.

LSP

Shows the amount of LSP packets.

CSNP

Shows the amount of CSNPs.

PSNP

Shows the amount of PSNPs.
9036830-00 Rev AD