SMC Networks SMC8150L2 manual Igmp Filtering and Throttling Commands, 213

Multicast Filtering Commands 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.

Table 4-71 IGMP Filtering and Throttling Commands

Command	Function	Mode	Page
ip igmp filter	Enables IGMP filtering and throttling on the switch	GC	4-211
ip igmp profile	Sets a profile number and enters IGMP filter profile	GC	4-212
	configuration mode
permit, deny	Sets a profile access mode to permit or deny	IPC	4-212
range	Specifies one or a range of multicast addresses for a profile	IPC	4-213
ip igmp filter	Assigns an IGMP filter profile to an interface	IC	4-213
ip igmp max-groups	Specifies an IGMP throttling number for an interface	IC	4-214
ip igmp max-groups action	Sets the IGMP throttling action for an interface	IC	4-215
show ip igmp filter	Displays the IGMP filtering status	PE	4-215
show ip igmp profile	Displays IGMP profiles and settings	PE	4-216
show ip igmp throttle	Displays the IGMP throttling setting for interfaces	PE	4-216
interface

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 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.

•IGMP filtering and throttling only applies to dynamically learned multicast groups, it does not apply to statically configured groups.

4-211