In some situations, you might want multicast traffic to be forwarded to a port where a multicast-enabled host is not available (for example, when you test multicast configurations). Static MLD emulates a host or router attached to a switch port, so that multicast traffic is forwarded to that port, and the switch sends a proxy join for all the statically configured MLD groups when an MLD query is received. You can emulate a host to forward a particular multicast group to a port; and you may emulate a router to forward all multicast groups to a port.