Restrictions and guidelines: IGMP snooping configuration

For IGMP reports received from secondary VLANs, the associated IGMP snooping forwarding entries are maintained by the primary VLAN. Therefore, you need to enable IGMP snooping only for the primary VLAN. The IGMP snooping configuration made in secondary VLANs does not take effect. For more information about primary VLANs and secondary VLANs, see Layer 2—LAN Switching Configuration Guide.

The IGMP snooping configurations made on Layer 2 aggregate interfaces do not interfere with the configurations made on member ports. In addition, the configurations made on Layer 2 aggregate interfaces do not take part in aggregation calculations. The configuration made on a member port of the aggregate group takes effect after the port leaves the aggregate group.

Some features can be configured for a VLAN in VLAN view or for multiple VLANs in IGMP-snooping view. The configuration made in VLAN view and the configuration made in IGMP-snooping view have the same priority, and the most recent configuration takes effect.

Some features can be configured for a VLAN in VLAN view or globally for all VLANs in IGMP-snooping view. The VLAN-specific configuration takes priority over the global configuration.

Some features can be configured for a VSI in VSI view or globally for all VSIs in IGMP-snooping view. The VSI-specific configuration takes priority over the global configuration.

Some features can be configured for an interface in interface view or for all interfaces of the specified VLANs in IGMP-snooping view. The interface-specific configuration takes priority over the configuration made in IGMP-snooping view.