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show interface switch

  • From: ww
  • Date: Tue Feb 29 14:25:19 2000

There used to be an undocumented command in Cisco IOS that would
provide statistics about how packets were being dealt with -- namely
'show interface switch'. A sample output of the command:

Ethernet1/1 
         Throttle count:          0
     Protocol       Path    Pkts In   Chars In   Pkts Out  Chars Out
        Other    Process        451      54909      24890    1493400
            Cache misses          0
                    Fast          0          0          0          0
               Auton/SSE          0          0          0          0
           IP    Process      17354    2180875     123854   12437965
            Cache misses      18678
                    Fast   13066464  788505528   11642545 4290345939
               Auton/SSE          0          0          0          0
Trans. Bridge    Process          0          0        104       6240
            Cache misses          0
                    Fast        549      38962         63       8268
               Auton/SSE          0          0          0          0
      DEC MOP    Process          0          0        414      31878
            Cache misses          0
                    Fast          0          0          0          0
               Auton/SSE          0          0          0          0
Spanning Tree    Process          0          0        584      35040
            Cache misses          0
                    Fast          0          0          0          0
               Auton/SSE          0          0          0          0
          ARP    Process      75404    4531576        149       8940
            Cache misses          0
                    Fast          0          0          0          0
               Auton/SSE          0          0          0          0
          CDP    Process         35      10885        533     168537
            Cache misses          0
                    Fast          0          0          0          0
               Auton/SSE          0          0          0          0

For certain this command exists in versions of 11.X vintage, although
it seems to have disappeared in 12.X. Does anyone know why it has been 
abandoned? These are usefull statistics from a debugging perspective
(i.e. why is this router crumbling under high traffic load? because
it's process switching all of its packets) and I don't think that it's 
possible to garner them from netflow. Has it been replaced by another
undocumented command? 

Cheers,
Will Waites
ww@pandora.styx.org






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