Allied Telesis AT-S41 - Manual (Page 226)

AT-S41 User’s Guide
226
Activating IGMP Snooping
To enable or disable IGMP snooping on the switch and to configure
IGMP snooping parameters, perform the following procedure:
1. Click on the Advanced Config menu tab and select IGMP Snooping
from the sub-menu.
The IGMP Snooping page will appear, as displayed in Figure 81.
Figure 81 IGMP Snooping
The parameters on the IGMP Snooping page are defined below:
IGMP Snooping Status
Enables and disables IGMP snooping on the switch.
After selecting Enable or Disable, click the Apply button below the
pull-down menus.
Age Out Timer
Specifies the time period in seconds after which the switch stops
sending out multicast packets out of a port with an inactive host
node. An inactive host node is a node that has not sent an IGMP
report during the specified time interval. The range is from 280 to
420 seconds. The default is 280 seconds.
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during the specified time interval, it assumes that the router is no
longer active on the port.
After entering a new time, click the Apply button below the pull-
down menus.