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Cisco Bug: CSCvu63081 - FEX 2248 dropping multicast during IGMP update from client on a different FEX

Last Modified

Sep 18, 2020

Products (12)

  • Cisco Nexus 5000 Series Switches
  • Cisco Nexus 5548P Switch
  • Cisco Nexus 5596UP Switch
  • Cisco Nexus 6004 Switch
  • Cisco Nexus 5624Q Switch
  • Cisco Nexus 5672UP Switch
  • Cisco Nexus 6001 Switch
  • Cisco Nexus 5548UP Switch
  • Cisco Nexus 56128P Switch
  • Cisco Nexus 5696Q Switch
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Known Affected Releases


Description (partial)

FEX N2K-C2248TP-E-1GE with a Nexus 5000 parent switch is intermittently dropping a small number of multicast packets during IGMP updates coming to the parent switch.

The issue happens only during IGMP update the parent Nexus switch. In particular, it is seen when parent Nexus 5K receives IGMP leave report from a host connected to a different FEX.
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