Preventing unjoined multicast traffic

For more information about unjoined multicast traffic, see Unjoined multicast traffic.

Syntax:

[no] igmp filter-unknown-mcast

Enables interface isolation for unjoined multicast groups. IGMP is configured so that each interface with IGMP enabled will have a data-driven multicast filter associated with it, preventing unjoined IP multicast packets from being flooded. A reboot is required for the change to take effect.

Default: Disabled