WRED

From: haducbinh (haducbinh@gmail.com)
Date: Fri Mar 30 2007 - 19:37:41 ART

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Hi GS!

I configure WRED, but I don't understand the meaning two of this:

exponential weight: 9

mean queue depth: 13

what do "exponential" and "mean queue depth" mean?

R2#sh policy-map interface s0/1

 Serial0/1

  Service-policy output: TRAFFIC

    Class-map: VoIP (match-all)

      0 packets, 0 bytes

      30 second offered rate 0 bps, drop rate 0 bps

      Match: dscp ef

      Queueing

        Strict Priority

        Output Queue: Conversation 40

        Bandwidth 60 (%)

        Bandwidth 76 (kbps) Burst 1900 (Bytes)

        (pkts matched/bytes matched) 0/0

        (total drops/bytes drops) 0/0

    Class-map: PING (match-any)

      1845 packets, 2334016 bytes

      30 second offered rate 55000 bps, drop rate 0 bps

      Match: dscp af21

        971 packets, 1229040 bytes

        30 second rate 27000 bps

      Match: dscp af23

        874 packets, 1104976 bytes

        30 second rate 28000 bps

      Queueing

        Output Queue: Conversation 41

        Bandwidth 10 (kbps)

        (pkts matched/bytes matched) 1533/1865680

        (depth/total drops/no-buffer drops) 12/0/0

         exponential weight: 9 !<-- here

         mean queue depth: 13 !<-- here

   dscp Transmitted Random drop Tail drop Minimum Maximum
Mark

           pkts/bytes pkts/bytes pkts/bytes thresh thresh
prob

   af11 0/0 0/0 0/0 32 40
1/10

   af12 0/0 0/0 0/0 28 40
1/10

   af13 0/0 0/0 0/0 24 40
1/10

   af21 975/1234144 0/0 0/0 32 40
1/10

   af22 0/0 0/0 0/0 28 40
1/10

   af23 874/1104976 0/0 0/0 24 40
1/10

   af31 0/0 0/0 0/0 32 40
1/10

   af32 0/0 0/0 0/0 28 40
1/10

   af33 0/0 0/0 0/0 24 40
1/10

   af41 0/0 0/0 0/0 32 40
1/10

   af42 0/0 0/0 0/0 28 40
1/10

   af43 0/0 0/0 0/0 24 40
1/10

    cs1 0/0 0/0 0/0 22 40
1/10

    cs2 0/0 0/0 0/0 24 40
1/10

    cs3 0/0 0/0 0/0 26 40
1/10

    cs4 0/0 0/0 0/0 28 40
1/10

    cs5 0/0 0/0 0/0 30 40
1/10

    cs6 0/0 0/0 0/0 32 40
1/10

    cs7 0/0 0/0 0/0 34 40
1/10

     ef 0/0 0/0 0/0 36 40
1/10

   rsvp 0/0 0/0 0/0 36 40
1/10

default 0/0 0/0 0/0 20 40
1/10

Thanks!

HaDucBinh
Email: <mailto:haducbinh@vnpro.org> haducbinh@vnpro.org
Y/M: haducbinh
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