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
• Unit – Stack unit. (Range: 1-8)
• Port or Trunk – Specifies the interface attached to a multicast router/
switch.
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