Allied Telesis AT-S63 - Manual (Page 309)

AT-S63 Management Software Menus User’s Guide
Section III: Snooping Protocols 309
Port/Trunk ID
The port on the switch where the multicast router is connected. If the
switch learned the router on a port trunk, the trunk ID number, not the
port number, is displayed.
Router IP
The IP address of the multicast router.
Exp Time
The number of seconds remaining before the multicast router is timed
out if no further queries are received from it.