Chapter 22
| Multicast Filtering Commands
IGMP Filtering and Throttling
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ip igmp filter
(Global Configuration)
This command globally enables IGMP filtering and throttling on the switch. Use the
no form to disable the feature.
Syntax
[no] ip igmp filter
Default Setting
Disabled
Command Mode
Global Configuration
Command Usage
â—† IGMP filtering enables you to assign a profile to a switch port that specifies
multicast groups that are permitted or denied on the port. An IGMP filter profile
can contain one or more, or a range of multicast addresses; but only one profile
can be assigned to a port. When enabled, IGMP join reports received on the
port are checked against the filter profile. If a requested multicast group is
permitted, the IGMP join report is forwarded as normal. If a requested multicast
group is denied, the IGMP join report is dropped.
â—† IGMP filtering and throttling only applies to dynamically learned multicast
groups, it does not apply to statically configured groups.
â—† The IGMP filtering feature operates in the same manner when MVR is used to
forward multicast traffic.
Example
Console(config)#ip igmp filter
Console(config)#
show ip igmp query-drop Shows if the interface is configured to drop IGMP query
packets
PE
show ip igmp throttle
interface
Displays the IGMP throttling setting for interfaces PE
Table 121: IGMP Filtering and Throttling Commands (Continued)
Command Function Mode
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