Allied Telesis AT-S41 - Manual (Page 125)

AT-S41 User’s Guide
125
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during the specified time interval, it assumes that the router is no
longer active on the port.
[V]iew Group Members
Allows you to display a list of the group members of each
multicast group on a switch.
3. Type E to select enable/disable IGMP snooping option and then type
E at the command prompt.
IGMP is now activated on the switch.