Active multicast receiver entries are aging on each IGMP query sent on the VLAN (A): When IGMP snooping querier is enabled on a VLAN, it functions to manage multicast traffic within the VLAN by keeping track of multicast group memberships. The IGMP querier sends queries to determine which ports require the multicast traffic. The multicast receiver entries, which are entries that indicate which devices have requested the multicast data, age or time out based on these IGMP queries. Each query refreshes active connections but ages out entries that no longer respond, helping to ensure that multicast traffic is only sent to ports with active receivers.
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