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Cisco Bug: CSCvv26537 - IPv6 egress qos is not working fine, when we have egress ACL & QoS

Last Modified

Oct 22, 2020

Products (1)

  • Cisco Network Convergence System 5500 Series

Known Affected Releases

7.1.2.BASE 7.2.1.BASE 7.2.2.BASE 7.3.1.BASE

Description (partial)

Symptom:
QoS statistics are incorrect, when using this cli - "show policy-map interface <interface name> output". seeing more statistics and packets are in wrong queues.

>sh policy-map int be 6 output
Bundle-Ether6 output: pmap_bundle_egress

Class out_bundle1

  Classification statistics          (packets/bytes)     (rate - kbps)

    Matched             :            27016029/92733929924          335614.  <<<< packets are expected here

    Transmitted         :            27016029/92733929924          335614

    Total Dropped       :                   0/0                    0

  Queueing statistics

    Queue ID                             : None (Bundle)

    Taildropped(packets/bytes)           : 0/0

Class out_bundle2

  Classification statistics          (packets/bytes)     (rate - kbps)

    Matched             :             3412123/11847574096          42858    <<<<<<< why traffic is hitting here, is it recycled packets?

    Transmitted         :             3412123/11847574096          42858

    Total Dropped       :                   0/0                    0

  Queueing statistics

    Queue ID                             : None (Bundle)

    Taildropped(packets/bytes)           : 0/0

Conditions:
IPv6 ACL & QoS together applied on an interface, where IPv6 traffic is sent on DNX platform.
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