Chapter 47 Configuration Mode Commands

Syntax:

igmp-snooping

igmp-snooping 8021p-priority <0-7> igmp-snooping host-timeout <1-16711450> igmp-snooping leave-timeout <1-16711450>

igmp-snooping unknown-multicast-frame <dropflooding> igmp-snooping reserved-multicast-group <dropflooding>

where

igmp-snooping

=

Enables IGMP snooping on the Switch.

8021p-priority

=

Sets a priority level (0-7) to which the Switch changes the

 

 

priority in outgoing IGMP control packets.

host-timeout <1- 16711450>

leave-timeout <1- 16711450>

=Specifies the time out period of the Switch with respect to IGMP report queries. If an IGMP report for a multicast group was not received for a host-timeout period, from a specific port, this port is deleted from the member list of that multicast group.

=Specifies the time that the Switch will wait for multicast members to respond to a leave report. If no response happens in the timeout period, the Switch deletes the port from the multicast group.

unknown-multicast-

= Specifies whether you want to discard packets from

frame <dropflooding>

unknown multicast groups or whether you want to forward

 

them to all ports.

reserved-multicast- group <dropflooding>

An example is shown next.

=Specifies whether you want to discard packets in the reserved multicast groups or whether you want to forward them to all ports.

•Enable IGMP snooping on the Switch.

•Set the host-timeoutand leave-timeoutvalues to 30 seconds

•Set the Switch to drop packets from unknown multicast groups.

sysname(config)# igmp-snooping sysname(config)# igmp-snooping host-timeout 30 sysname(config)# igmp-snooping leave-timeout 30 sysname(config)# igmp-snooping unknown-multicast-frame drop

47.3 Configure IGMP Filter

Use the following commands in the config mode to configure IGMP filtering profiles. Syntax:

igmp-filtering

igmp-filtering profile <name> start-address <ip> end-address <ip>

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GS-4012F/4024 User’s Guide