Allied Telesis AT-S62 - Manual (Page 208)

Chapter 15: IGMP Snooping
Section II: Advanced Operations 208
When selecting a value for this parameter, it is important to note that
the value you enter actually defines the approximate mid-point of a
range within which a timeout can occur. Consequently, an actual
timeout may occur earlier or later than the value that you enter. The
range is from 0.7 to 1.4 of your value. For example, if you leave this
parameter set to the default 260 seconds, a timeout can occur from
182 seconds to 364 seconds. You may need to take this into account
when setting this parameter.
4 - Maximum Multicast Groups
Specifies the maximum number of multicast groups the switch will
learn. This parameter is useful with networks that contain a large
number of multicast groups. You can use the parameter to prevent
the switch’s MAC address table from filling up with multicast
addresses, leaving no room for dynamic or static MAC addresses. The
range is 1 to 255 groups. The default is 64 multicast groups.
5 - Multicast Router Port(s)
Specifies the port on the switch to which a multicast router is
detected. You can let the switch determine this automatically by
selecting Auto Detect, or you can specify the port yourself by entering
a port number. To select Auto Detect, enter “0” (zero) for this
parameter. You can specify more than one port.
Your changes are immediately activated on the switch.
Note
Option “6 - View Multicast Hosts List” is described in Displaying a List
of Host Nodes, next. Option “7 - View Multicast Routers List” is
described in Displaying a List of Multicast Routers on page 211.
3. After making changes, type R until you return to the Main Menu. Then
type S to select Save Configuration Changes.