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When PIM is enabled, the IGMP-enabled SVI should be the IGMP querier. However, IGMP snooping pushes the switch querier: switch# show ip igmp interface vrf all | grep Vlan64 Vlan64, Interface status: protocol-up/link-up/admin-up switch# show ip igmp snooping querier | grep Vlan64 64 192.0.2.1 v3 00:01:51 Switch querier This causes the IGMP Reports not being passed to L3 IGMP process for processing, which in turn makes the L3 IGMP to lose state after some time (meaning, the L3 IGMP entries expire) and the multicast traffic to stop being received.
PIM is enabled for the Bridge Domain, which also has IGMP Snooping and IGMP Snooping Querier enabled for it.
Disable the querier under the IGMP snooping policy for the Bridge Domain.
This issue might occur when due to whatever reason the BD SVI comes up later than the IGMP Snooping Querier config is pushed to the switch. Examples of the triggers are upgrade, clean-reload, or enabling the routing on BD/configuring it to push the Default SVI Gateway later than enabling the IGMP Snooping Querier on that BD.
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