Adding a Permanent Multicast Static Entry

On SummitStack and ExtremeSwitching series switches, you can create FDB entries to multicast MAC addresses (that is, 01:00:00:00:00:01) and list one or more ports.

Use the create fdb mac_addr vlan vlan_name [ports port_list | blackhole] command to enter the multicast FDB address. After traffic with a multicast MAC destination address enters the switch, that traffic is multicast to all ports on the list.

However, if the MAC address is in the IP multicast range (for example, 01:00:5e:XX:XX:XX), IGMP snooping rules take precedence over the multicast static FDB entry. Of course, if you disable IGMP snooping on all VLANs, the static FDB entry forwards traffic.