
Customizing IGMP
114064 Rev. B 3-5
Configuring IGMP on an Interface
The following sections show you how to configure interface-specific IGMP
features using Site Manager.
Enabling and Disabling IGMP
IGMP is automatically enabled when you add it to an IP interface. You can use
Site Manager to disable and reenable IGMP on the interface.
Specifying a Query Rate
By default, IGMP sends out group membership queries on the interface every 120
seconds. You can use Site Manager to specify a query rate from 0 to 4096 seconds.
Specifying 0 affects queries only. The router still forwards multicast datagrams on
this circuit.
Site Manager: Enable parameter: page A-15
Site Manager: Interface Query Rate parameter: page A-16
Note: If another IGMP router on this network has taken on the query role, this
router will not send out queries unless it has not heard of any within the
number of seconds specified by the Designated Router Timeout parameter.
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