IGMP Snooping

With IGMP Snooping switches identify which ports multicast group members hosts are associated with to optimize the distribution of multicast traffic.

Some common use-cases for IGMP Snooping are:

Configuring IGMP Snooping on switches for specific VLANs.
Enabling the feature globally for all edge switches in specific VLANs assigned to a network policy.
Supporting IGMP Snooping to be disabled using switch template VLAN attributes override or device-level configuration override.

The IGMP Snooping feature can be configured in multiple locations, in an overriding hierarchy, listed in order of priority:

Device Specific VLAN configuration
VLAN attributes screen
Device templates
Common settings

When IGMP Snooping is not configured, the higher-level settings take effect. For example, if device-specific VLAN IGMP settings are set to disabled, the VLAN attributes settings for the VLAN take effect.