WRED thresholds and queue-limit

Hello,
Is this a valid configuration of WRED, where the queue-limit is set to 64
packets by default, the WRED Min Threshold is 100 (packets) and Max
threshold is 400 (packets)? Would this configuration defeat the whole
purpose of using WRED, as the average queue depth will never reach 100
packets (min threshold)? Am I understanding this correctly?

<sample output>
R1#sh policy-map int gi0/0 out
 GigabitEthernet0/0

  Service-policy output: test-pmap

    Class-map: test1 (match-all)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: none
      Queueing
      queue limit 64 packets
      (queue depth/total drops/no-buffer drops) 0/0/0
      (pkts output/bytes output) 0/0
      bandwidth 30000 kbps
        Exp-weight-constant: 9 (1/512)
        Mean queue depth: 0 packets
        dscp Transmitted Random drop Tail drop
Minimum Maximum Mark
                  pkts/bytes pkts/bytes pkts/bytes
thresh thresh prob

        cs3 0/0 0/0
0/0 100 400 1/10

<sample config of wred>
policy-map test-pmap
 class test1
    bandwidth 30000
     random-detect dscp-based
     random-detect dscp 24 100 400

Thank you,

Tom Kacprzynski

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Received on Tue Jan 24 2012 - 15:10:29 ART