Display IS-IS Statistics and Counters

1. Display IS-IS system statistics:

   show isis statistics

2. Display IS-IS interface counters:

   show isis int-counters [home|remote]

3. Display IS-IS level 1 control packet counters:
   show isis int-l1-cntl-pkts [home|remote]

   

   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  AREA   AREA-NAME
         LSPs   FAILS  DROP   EXCEEDED  SKIPS    PURGE    LEN     CHANGES OLOAD  
------------------------------------------------------------------------------------------------------
Level-1  0      0      0      0        1        0        0       0       0        HOME    area-9.00.02 
Level-1  0      0      0      0        1        0        0       0       0        REMOTE  area-9.00.02    

Switch:1# show isis int-counters
===============================================================================================
                                   ISIS Interface Counters
===============================================================================================
IFIDX    LEVEL   AUTH    ADJ       INIT    REJ   ID LEN  MAX AREA  LAN DIS  AREA  AREA-NAME
                 FAILS   CHANGES   FAILS   ADJ                     CHANGES 
----------------------------------------------------------------------------------------------
Mlt2     Level 1  0       1        0       0      0       0        0        HOME  area-9.00.02     
Port1/21 Level 1  0       1        0       0      0       0        0        HOME  area-9.00.02

Switch:1# show isis int-l1-cntl-pkts
============================================================================================
                        ISIS L1 Control Packet counters
============================================================================================
IFIDX      DIRECTION       HELLO        LSP      CSNP         PSNP   AREA   AREA-NAME      
--------------------------------------------------------------------------------------------
Mlt2        Transmitted    13346        231        2           229   HOME   area-9.00.02 
Mlt2        Received       13329        230        1           230   HOME   area-9.00.02  
Port1/21    Transmitted    13340        227        2           226   HOME   area-9.00.02   
Port1/21    Received       13335        226        1           227   HOME   area-9.00.02