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IGMP join cannot reach upstream switch with Flex-10 VLAN tunneling

 
Biao Zhou
Occasional Visitor

IGMP join cannot reach upstream switch with Flex-10 VLAN tunneling

I have a C7000 chassis with Flex-10 module with 3.01 firmware, I notice that IGMP join can not reach upstream switch in VLAN tunneling mode if IGMP snooping is enabled. If I disable IGMP snooping, IGMP join can be received by upstream switch. If Flex-10 is In VLAN tagging mode with IGMP snooping enabled, IGMP join can reach upstream switch.

Do I need any other configuration to get IGMP working in VLAN tunneling mode or this sounds a bug?