Allied Telesis AT-S63 User Manual

Page 373

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AT-S63 Management Software Command Line Interface User’s Guide

Section III: IGMP Snooping, MLD Snooping, and RRP Snooping

373

for queries from the router. If the switch does
not detect any queries from a multicast
router 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router is assumed to be no longer active on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
that the specified value. For example, a
setting of 25 seconds can result in the switch
classifying a host node or multicast router as
inactive after just 15 seconds. A setting of 10
seconds or less can result in the immediate
timeout of an inactive host node or router.

numbermulticastgroups

Specifies the maximum number of multicast
addresses 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
addresses; the default is 64 addresses.

Note

The combined maximum number of multicast address groups for
IGMP and MLD snooping cannot exceed 255.

routerport

Specifies the port(s) on the switch
connected to a multicast router. Options are:

port

Specifies the router port(s)

manually.

all

Specifies all of the switch ports.

none

Sets the mode to manual

without any router ports
specified.

auto

Activates auto-detect, where

the switch automatically
determines the ports with
multicast routers.

Description

This command configures the IGMP snooping parameters.

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