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Cisco Bug: CSCur42298 - Default COPP Policy for IGMP should be higher

Last Modified

Aug 15, 2017

Products (1)

  • Cisco Unified Computing System

Known Affected Releases

2.2(2c)A

Description (partial)

Symptom:
Certain hosts or VM's behind a UCS 6200 Fabric Interconnect will not join multicast groups.

Conditions:
IGMP reports are not processed despite the fact that they are received by the FI.  
You see a high number of violations when running the following from nxos:

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;
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