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Cisco Bug: CSCur21818 - F3:Transient l2mcast/otv traffic drop during ISSU from 6.2.6/8 to 6.2.10

Last Modified

Oct 16, 2014

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases


Description (partial)

Multicast traffic drop during ISSU for a small window of time in F3 modules for the following traffic cases
-  IGMPv3 L2 multicast traffic on CE/DCE VLAN
-  IGMPv3 L2 multicast traffic with Layer 3 routing from one SVI to another SVI 
-  OTV L2 multicast traffic with IGMPv3

Note: Traffic using IGMPv3 entries will encounter this issue. Traffic using IGMPv2 entries will not encounter this issue.

1) IGMP snooping enabled and working in IGMPv3 mode (and)
2) ISSU from 6.2.6 (or) 6.2.8 to 6.2.10
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