Web – Click IGMP Snooping, IP Multicast Registration Table. Select a
VLAN ID and the IP address for a multicast service from the scroll-down
lists. The switch will display all the interfaces that are propagating this
multicast service.
Figure 3-97 Displaying Port Members of Multicast Services
CLI – This example displays all the known multicast services supported
on VLAN 1, along with the ports propagating the corresponding services.
The Type field shows if this entry was learned dynamically or was statically
configured.
Console#show mac-address-table multicast vlan 1
VLAN M'cast IP addr. Member ports Type
---- --------------- ------------ -------
1
224.1.1.12
1
224.1.2.3
Console#
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 3-223. 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.
Eth1/2
USER
Eth1/2
IGMP
M
F
ULTICAST
ILTERING
4-271
3-229
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