Configuring IGMP router alert, snoop, and proxy on a VLAN

Use this procedure to configure IGMP router alert on a VLAN. The router alert feature instructs the router to drop control packets that do not have the router-alert flag in the IP header.

This procedure also allows you to configure IGMP snooping and proxy.


Attention

With IGMP snoop, the QueryInterval, Robustness, and Version values must be the same as those configured on the interface (VLAN) of the multicast router (IGMP querier).


Attention

To maximize your network performance, Nortel recommends that you set the router alert parameter according to the version of IGMP currently in use:

  • IGMPv1—Disable
  • IGMPv2—Enable
  • IGMPv3—Enable

IGMP snoop, proxy, and router alert are all disabled by default.

Procedure steps


Step Action

1

From the Device Manager menu bar, select VLAN > VLANs.

The VLAN dialog box appears with the Basic tab displayed.

2

Select a VLAN.

3

Click IP.

The IP, VLAN dialog box appears with the IP Address tab displayed.

4

Click the IGMP tab.

5

To enable the router alert option, select enable in the RouterAlertEnable box.

6

To enable IGMP snoop, select the SnoopEnable box.

7

To enable IGMP proxy, select the ProxySnoopEnable box.

8

To configure the other IGMP properties, modify the values in the boxes provided.

9

Click Apply.


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