Allied Telesis AT-S63 - Manual (Page 356)

Chapter 18: IGMP Snooping
356 Section II: Advanced Operations
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. Also, the last 10 seconds are not aged
out regardless of the interval you set. You may need to take this
information into account when setting this parameter.
4 - Maximum Multicast Groups
This parameter specifies the maximum number of multicast groups the
switch learns. 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.
Note
A change to any parameter in this menu is immediately activated on
the switch.
Note
Selection 6, View Multicast Hosts List, is described in ”Displaying a
List of Host Nodes”, next. Selection 7, View Multicast Routers List, is
described in “Displaying a List of Multicast Routers” on page 360.
4. After making changes, type R until you return to the Main Menu. Then
type S to select Save Configuration Changes.
Your changes are activated immediately on the switch.