24-Port Managed Gigabit Switch
ther router continues forwarding the multicast traffic to the VLAN.
The switch only forwards IP multicast group traffic to those hosts
listed in the forwarding table for that IP multicast group.
When hosts need to leave a multicast group, they can either ignore
the periodic general-query requests sent by the router, or they can
send a leave message. When the swith receives a leave message
from a host, it sends out a group-specific query to determine if any
devices behind that interface are interested in traffic for the specific
multicast group. If, after a mumber of queries, the router process or
receives no reports from a VLAN, it removes the group for the
VLAN from its multicast forwarding table.
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