Enabling the IGMP snooping querier
This feature enables the switch to periodically send IGMP general queries to establish and maintain multicast forwarding entries at the data link Layer. You can enable the IGMP snooping querier on a network without Layer 3 multicast devices.
Configuration restrictions and guidelines
When you enable the IGMP snooping querier, follow these restrictions and guidelines:
Do not enable the IGMP snooping querier on a multicast network that runs IGMP. The IGMP snooping querier does not take part in IGMP querier elections. However, it might affect IGMP querier elections if it sends IGMP general queries with a low source IP address. For more information about the IGMP querier election, see "Configuring IGMP."
Assume that an RB acts as both the IGMP snooping querier and the AVF of a VLAN on a TRILL network. As a best practice, configure the appointed port of the VLAN as a static router port to ensure that IGMP snooping forwarding entries can be created. For more information about TRILL, RBs, AVFs, and appointed ports, see TRILL Configuration Guide.
Configuration procedure
To enable the IGMP snooping querier:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter VLAN view. | vlan vlan-id | N/A |
3. Enable the IGMP snooping querier. | igmp-snooping querier | By default, the IGMP snooping querier is disabled. |