Configuring IGMP Query Control

An IGMP querier periodically sends IGMP Query messages on a shared network segment to refresh information about IGMP group members. IGMP parameters configured on all the interfaces of the multicast devices on the same network segment with the user host should be consistent; otherwise, a fault occurs on the network.

Configuring an IGMPv1 Querier: Configuring an IGMPv1 querier involves setting the interval for sending General Query messages and a robustness variable.

Configuring an IGMPv2/v3 Querier: Configuring an IGMPv2/v3 querier involves setting the interval for sending General Query messages, robustness variable, maximum response time of the Query messages, Keepalive time of other IGMP queriers, interval for sending IGMP Last Member Query messages, and interval for sending IGMP group-specific messages, and configuring group membership to never time out on the interface and the IGMP fast leave function.