Viewing and editing multicast router discovery information

View multicast router discovery information to view the current configuration.

About this task

You can configure IGMP on a VRF instance the same way you configure the Global Router except that you must first launch the appropriate VRF context.

In the navigation pane, expand the following folders: Configuration > IP.
Click IGMP.
Click the Multicast Router Discovery tab.
To edit the current configuration, double-click the value, make the change, and then click Apply.

Use the data in the following table to use the Multicast Router Discovery tab.


Name	Description
Interface	Shows the interface where IGMP is enabled.
MrdiscEnable	Enables (true) or disables (false) the router interface to listen for multicast router discovery messages to determine where to send multicast source data and IGMPv2 reports. If you enable snoop, you automatically enable multicast router discovery.
DiscoveredRouterPorts	Lists ports that the Multicast Router Discovery (MRDISC) protocol discovers. Important: The switch does not support the MRDISC protocol on brouter ports.
MaxAdvertiseInterval	Shows the maximum time allowed between sending router advertisements from the interface, in seconds. The range is from 2–180 seconds. The default is 20 seconds.
MinAdvertiseInterval	Shows the minimum time allowed between sending unsolicited router advertisements from the interface, in seconds. This value must be more than 3 seconds but no greater than the value assigned to the MaxAdvertiseInterval value.
MaxInitialAdvertiseInterval	Configures the maximum number (in seconds) of multicast advertisement intervals that you can configure on the switch.
MaxInitialAdvertisements	Configures the maximum number of initial multicast advertisements that you can configure on the switch.
NeighborDeadInterval	Shows the time interval (in seconds) before the router interface drops traffic after a user leaves the multicast group.