Is Igmpv3 Backwards Compatible with Igmpv2?

IGMPv3 supports source-specific join and leave messages and is backward compatible with IGMPv1 and IGMPv2.

How are the different versions of IGMP compatible?

An interface or router sends the queries and reports that include its IGMP version specified on it. ... Also, a router running IGMP V3 can recognize and process IGMP V2 packet, but when that router sends queries to an IGMP V2 interface, the downgraded version is supported, no the upgraded version.

What is the difference between IGMP V2 and V3?

IGMP Versions Differences

IGMPv2 improves over IGMPv1 by adding the ability for a host to signal desire to leave a multicast group and IGMPv3 improves over IGMPv2 mainly by adding the ability to listen to multicast originating from a set of source IP addresses only.