Description

Multicast packets are not forwarding between the VMs

Solution

The EXSi Host's connected on two different VM server on same vlan is unable to communicate to its multicast address to elect the master/backup for proxy service.

 

EXSI host ------xe-X/X/X & xe-X/X/X ---EX -- xe-X/X/X & xe-X/X/X –EXSI host

 

As per packet capture,  we can confirm that the multicast packet is being received on the switch.

 

However, it appears that the VM is not sending any IGMP query messages to the multicast group. If the source were sending query messages, the switch would forward the packets based on the group ID, the switch is not receiving any such packets.

 

We remove the below configuration on the switch

 

    igmp-snooping {

        vlan all;

   }

}

 

Further the packets are exchanging between the VMs

Modification History

2025-01-07 : Article Created