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Cisco Bug: CSCum46296 - multicast packet dropped by esxi firewall after upgrading to esxi5.5

Last Modified

Mar 16, 2016

Products (2)

  • Cisco Nexus 1000V Switch for VMware vSphere
  • Cisco Nexus 1000V Switch

Known Affected Releases


Description (partial)

Customer upgraded esxi to 5.5 and upgraded 1000v. After upgrade, ping from one vm to another vm on different host will fail for about 10 min. Further troubleshooting find out multicast packet (igmp join) got dropped by esxi firewall (customer configured vxlan multicast mode for 1000v),

esxi 5.5 vxlan in multicast mode
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