Allied Telesis AT-S63 - Manual (Page 273)

AT-S63 Stack Command Line User’s Guide
Section III: Snooping Protocol 273
during the specified time interval, the router
is assumed to be no longer active on the
port.
The actual timeout may be ten seconds less
than the specified value. For example, at a
setting of 25 seconds host nodes or
multicast routers could be labeled as inactive
after just 15 seconds. A setting of 10
seconds or less could result in the immediate
timeout of inactive host nodes or routers.
numbermulticastgroups Specifies the maximum number of multicast
addresses the stack can learn. Useful in
networks with large numbers of multicast
groups, this parameter can be used to
protect a stack’s MAC address table from
filling up with multicast addresses, leaving
no room for dynamic or static MAC
addresses. The range is 0 to 255 addresses;
the default is 64 addresses.
routerport Specifies the port(s) on the stack connected
to a multicast router. Options are:
port Specifies the router port(s)
manually. Port numbers are
specified in the following
format:
module ID.port number
For instructions, refer to “Port
Numbers in Commands” on
page 42.
all Specifies all of the stack’s
ports.
none Sets the mode to manual
without any router ports
specified.
auto Activates auto-detect, where
the stack automatically
determines the ports with
multicast routers.
Description
This command configures the IGMP snooping parameters.