Multicast Filtering Commands

4-221

4
IGMP Filtering and Throttling Commands
In certain switch applications, the administrator may want to control the multicast
services that are available to end users. For example, an IP/TV service based on a
specific subscription plan. The IGMP filtering feature fulfills this requirement by
restricting access to specified multicast services on a switch port and IGMP
throttling limits the number of simultaneous multicast groups a port can join.

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
• IGMP filtering enables you to assign a profile to a switch port that specifies
multcast groups that are permitted or denied on the port. An IGMP f ilter 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.
Table4-72 IGMP Filtering and Thro ttling Commands
Command Function Mode Page
ip igmp filter Enables IGMP filtering and throttling on the switch GC 4-221
ip igmp profile Sets a profile number and enters IGMP filter profile
configuration mode
GC 4-222
permit, deny Sets a profile access mode to permit or deny IPC 4-222
range Specifies one or a range of multicast addresses for a profile IPC 4-223
ip igmp filter Assigns an IGMP filter profile to an interface IC 4-223
ip igmp max-groups Specifies an IGMP throttling nu mber for an interface IC 4-224
ip igmp max-groups action Sets the IGMP throttling action for an interface IC 4-225
show ip igmp filter Displays the IGMP filtering status PE 4-225
show ip igmp profile Displays IGMP profiles and settings PE 4-226
show ip igmp throttle
interface
Displays the IGMP throttling setting for interfaces PE 4-226