[c-nsp] Monitioring Output Drops in a Specific Queue

[Jeff Wojciechowski]

Hi All:

What is the best way to monitor drops in a particular output queue? In particular I am trying to keep track of when we are dropping in the highsilver queue below.

Ive got some SNMP monitoring that will show drops on the interface as a whole but it doesn't differentiate between class-default drops or highsilver - in this case our highsilver is SIP and I am trying to figure out of the drops are causing problems.

The multilink connection below is 3xMPLS full T1's.

Router >sh policy-map interface
 Multilink123

  Service-policy output: PPS

    Class-map: explicit (match-all)
      123210239 packets, 7954843168 bytes
      5 minute offered rate 123000 bps, drop rate 0 bps
      Match: access-group 107
      Queueing
        Strict Priority
        Output Queue: Conversation 264
        Bandwidth 2048 (kbps) Burst 51200 (Bytes)
        (pkts matched/bytes matched) 17325065/1118418114
        (total drops/bytes drops) 0/0
      QoS Set
        dscp ef
          Packets marked 123210255

    <<<<<Class-map: highsilver (match-all)>>>>>
      105805964 packets, 6587618396 bytes
      5 minute offered rate 44000 bps, drop rate 0 bps
      Match: access-group 108
      QoS Set
        dscp af31
          Packets marked 105805966
      Queueing
        Output Queue: Conversation 265
        Bandwidth 512 (kbps) Max Threshold 64 (packets)
        (pkts matched/bytes matched) 9918039/607408715
        <<<<<<<<<<<<<(depth/total drops/no-buffer drops) 0/20678/0>>>>>>>>>>>>>>

    Class-map: class-default (match-any)
      356472191 packets, 54650243608 bytes
      5 minute offered rate 700000 bps, drop rate 0 bps
      Match: any
      Queueing
        Flow Based Fair Queueing
        Maximum Number of Hashed Queues 256
        (total queued/total drops/no-buffer drops) 0/25887/0
      QoS Set
        dscp af21
          Packets marked 356472215


Thank you,

Jeff Wojciechowski


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