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Mukund Sandur
Beginner

IGMP snooping in NX-OS

Hi,

I have a query regarding multicast in Nexus 5K.

I have two Nexus 5596 switches connected to each other and have multiple VLANs configured on both switches

say VLAN 10,20,30 & 40


I need to run IGMP snooping which is by default enabled...Nexus 5596 is purely running in L2 mode and I want to configure IGMP snooping querier.

In NX-OS, IGMP snooping querier must be configured under vlan mode and not on L3 interface ( In Cisco IOS Software, an IGMP Snooping Querier is configured under the layer-3 interface.)

1) If an IGMP snooping querier is configured on both switches, only one of them will be active because an IGMP snooping querier shuts down if a query is seen in the traffic.-- what it means about shutting down IGMP snooping querier. Does it disable L2 vlan on other switch. What does it exactly do.

   vlan 10

    ip igmp snooping-querier 192.168.10.1

   vlan 20

    ip igmp snooping-querier 192.168.20.1

   vlan 30

    ip igmp snooping-querier 192.168.30.1

   vlan 40

    ip igmp snooping-querier 192.168.40.1


If I enable igmp snooping querier on both switchesand current IGNMP snooping querier fails, will the other automatically start functioning as querier?

Thanks & Rgds,

Mukund Sandur

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