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Multimedia Traffic Control with IP Multicast (IGMP)
CLI: Configuring and Displaying IGMP
Viewing the Current IGMP Configuration. This command lists the IGMP
configuration for all VLANs configured on the switch or for a specific VLAN.
(For IGMP operating status, see the appendix on monitoring and analyzing
switch operation in the Management and Configuration Guide.)
For example, suppose you have the following VLAN and IGMP configurations
on the switch:
You could use the CLI to display this data as follows:
Figure 4-1. Example Listing of IGMP Configuration for All VLANs in the Switch
The following version of the show ip igmp command includes the VLAN ID (
vid)
designation, and combines the above data with the IGMP per-port
configuration:
Syntax: show ip igmp config
IGMP configuration for all VLANs on the switch.
Syntax: show ip igmp < vid > config
IGMP configuration for a specific VLAN on the switch, including
per-port data
Syntax: show ip igmp group < ip-address >
Lists the ports on which the specified multicast group IP address
is registered.
VLAN ID VLAN Name IGMP
Enabled
Forward with
High Priority
Querier
1 DEFAULT_VLAN Yes No No
22 VLAN-2 Yes Yes Yes
33 VLAN-3 No No No
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