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Cisco Bug: CSCuj53593 - ACL filter for QOS classification does not work when CEF is enabled.

Last Modified

Nov 27, 2020

Products (2)

  • Cisco 2600 Series Multiservice Platforms
  • Cisco 2600 Series Multiservice Platforms

Known Affected Releases

15.2(4)M 15.2(4)M2 15.2(4)M3.11 15.2(4)M4.5 15.3(3)M1.9 15.4(0.26)T

Description (partial)

When CEF is enabled, ACL filter for QOS classification does not work. The issue can be seen as below:

892#show policy-map int gi0

  Service-policy output: pmap-OUT

    Class-map: class-default (match-any)
      210 packets, 36423 bytes
      5 minute offered rate 1000 bps, drop rate 0000 bps
      Service-policy : pmap-qos

        queue stats for all priority classes:
          queue limit 64 packets
          (queue depth/total drops/no-buffer drops) 0/0/0
          (pkts output/bytes output) 37/6438

        Class-map: cmap-qos (match-any)
          0 packets, 0 bytes                                    <<===   This counter does not increase even the traffic for the acl is flowing
          5 minute offered rate 0000 bps, drop rate 0000 bps    <<===   
          Match: access-group name acl-qos   
            0 packets, 0 bytes                                  <<===   
            5 minute rate 0 bps                                 <<===   

This symptom is not observed under any specific conditions.
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