Allied Telesis AT-S63 - Manual (Page 390)

Chapter 18: IGMP Snooping
390 Section III: IGMP Snooping, MLD Snooping, and RRP Snooping
VLAN
The VID of the VLAN where the port is an untagged member.
Port/Trunk
The port on the switch where the host node is connected. If the host
node is connected to the switch through a trunk, the trunk ID number,
not the port number, is displayed.
HostIP
The IP address of the host node connected to the port.
IGMP Ver.
The version of IGMP used by the host.
Exp. Time
The number of seconds remaining before the host is timed out if no
further IGMP reports are received from it.