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Cisco Bug: CSCur28109 - COPP Policies need to be modifiable on 62xx

Last Modified

Sep 11, 2019

Products (1)

  • Cisco Unified Computing System

Known Affected Releases


Description (partial)

IGMP groups will not be programmed correctly on the FI and multicast traffic will not flow correctly.  You will see violations if you see the following:

UCS-A(nxos)# sh policy-map interface control-plane class copp-system-class-igmp
Control Plane
  service-policy  input: copp-system-policy-default
    class-map copp-system-class-igmp (match-any)
      match protocol igmp
      police cir 1024 kbps , bc 65535 bytes
        conformed 250907808688 bytes; action: transmit
        violated 97842375808 bytes;

If a lot of IGMP joins hit the switch at the same time, some may be dropped if they violate the default COPP policy
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