User`s guide

AT-S45 User’s Guide
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This parameter also specifies the time interval used by the switch in
determining whether a multicast router is still active. The switch
makes the determination by watching for queries from the router. If
the switch does not detect any queries from a multicast router during
the specified time interval, it assumes that the router is no longer
active on the port.
VLAN ID
Specifies the VLAN’s ID configured on the switch.
Multicast Group Address
Specifies the IP multicast addresses the switch has learned. The
switch can learn up to 128 multicast addresses.