M
ULTICAST
F
ILTERING
3-191

Assigning Ports to Multicast Services

Multicast filtering can be dynamically configured using IGMP Snooping
and IGMP Query messages as described in “Configuring IGMP snooping
and Query Parameters” on page 3-133. For certain applications that
require tighter control, you may need to statically configure a multicast
service on the switch. First add all the ports attached to participating hosts
to a common VLAN, and then assign the multicast service to that VLAN
group.
Command Usage
Static multicast addresses are never aged out.
When a multicast address is assigned to an interface in a specific
VLAN, the corresponding traffic can only be forwarded to ports
within that VLAN.
Command Attributes
Interface – Activates the Port or Trunk scroll down list.
VLAN ID – Selects the VLAN to propagate all multicast traffic
coming from the attached multicast router/switch.
Multicast IP – The IP address for a specific multicast service
Port or Trunk – Specifies the interface attached to a multicast router/
switch.