L
AYER
2 IGMP (S
NOOPING
AND
Q
UERY
)
16-11
Assigning Ports to Multicast Services
Multicast filtering can be dynamically configured using IGMP Snooping
and IGMP Query messages as described in “C onfiguring IGMP Snooping
and Query Parameters” on page 16-4. 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.