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Cisco Bug: CSCup55118 - ORIB buffer exhaustion on IGMP join/leave

Last Modified

Aug 01, 2019

Products (8)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 4-Slot Switch
  • Cisco Nexus 7700 6-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7700 18-Slot Switch
  • Cisco Nexus 7700 10-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch

Known Affected Releases

5.2(1) 6.1(4) 6.2(8a)

Description (partial)

Symptom:
ORIB buffer exhaustion when we receive continuous IGMP join/leave

 show ip igmp snooping internal ribs
IGMP Snooping internal RIB information
  RIB name: M2RIB (type 0), ready: Yes No , xid 0x1f6cd
    Max. outstanding buffers: 4
    Current outstanding buffers: 0
    Max. OMF entries per buffer: 400
    Max. OMF route entries per buffer: 50
    Max. route entries per buffer: 400
    Fabricpath redist instance: 1
    Used buffer queue count: 0
    Free buffer queue count: 10
      Buffer: 0x0x98650ac, type: none, xid: 0x0, count: 0
      Buffer: 0x0x9869f04, type: none, xid: 0x0, count: 0
      Buffer: 0x0x986ed5c, type: none, xid: 0x0, count: 0
      Buffer: 0x0x9873bb4, type: none, xid: 0x0, count: 0
      Buffer: 0x0x985174c, type: none, xid: 0x0, count: 0
      Buffer: 0x0x984c8f4, type: none, xid: 0x0, count: 0
      Buffer: 0x0x9847a9c, type: none, xid: 0x0, count: 0
      Buffer: 0x0x98565a4, type: none, xid: 0x0, count: 0
      Buffer: 0x0x985b3fc, type: none, xid: 0x0, count: 0
      Buffer: 0x0x9860254, type: none, xid: 0x0, count: 0
    TXLIST member version: 0
  RIB name: ORIB (type 1), ready: Yes No , xid 0x10009
    Used buffer queue count: 10
      Buffer: 0x0x97ff7ac, type: route, xid: 0x10000, count: 1
      Buffer: 0x0x9804604, type: route, xid: 0x10001, count: 1
      Buffer: 0x0x980945c, type: route, xid: 0x10002, count: 1
      Buffer: 0x0x980e2b4, type: route, xid: 0x10003, count: 1
      Buffer: 0x0x981310c, type: route, xid: 0x10004, count: 1
      Buffer: 0x0x97e6ff4, type: route, xid: 0x10005, count: 1
      Buffer: 0x0x97ebe4c, type: route, xid: 0x10006, count: 1
      Buffer: 0x0x97f0ca4, type: route, xid: 0x10007, count: 1
      Buffer: 0x0x97f5afc, type: route, xid: 0x10008, count: 1
      Buffer: 0x0x97fa954, type: route, xid: 0x10009, count: 1
    Free buffer queue count: 0
    TXLIST member version: 69545

Conditions:
this issue is seen in OTV environment
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Bug Details Include

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