Configuring Advanced

Features

 

 

Configuring Advanced Features

Multimedia Traffic Control with IP Multicast (IGMP)

Configuring Per-Port IGMP Packet Control. Use this command in the

VLAN context to specify how each port should handle IGMP traffic.

Syntax: vlan <vid> ip igmp

[auto <port-list> blocked <port-list> forward <port-list>]

Default: auto

For example, suppose you wanted to configure IGMP as follows for VLAN 1 on the 10/100 ports on the Switch 2512:

Ports 1-7

auto

Filter multicast traffic. Forward IGMP traffic to hosts on these ports

 

 

that belong to the multicast group for which the traffic is intended.

 

 

(Also forward any multicast traffic through any of these ports that is

 

 

connected to a multicast router.)

 

 

 

Port 8

forward

Forward all multicast traffic through this port.

 

 

 

Ports 9-12

blocked

Drop all multicast traffic received from devices on these ports, and

 

 

prevent any outgoing multicast traffic from moving through these

 

 

ports.

 

 

 

Depending on the privilege level, you could use one of the following commands to configure IGMP on VLAN 1 with the above settings:

HP2512(config)# vlan 1 ip igmp auto 1-7 forward 8 blocked 9-12

HP2512(vlan-1)# ip igmp auto 1-7 forward 8 blocked 9-12

The following command displays the VLAN and per-port configuration resulting from the above commands.

HP2512> show ip igmp 1 config

Configuring IGMP Traffic Priority. This command assigns “high” priority to IGMP traffic or returns a high-priority setting to “normal” priority.

Syntax: vlan <vid> ip igmp high-priority-forward

Default: normal

 

HP2512(config)# vlan 1 ip igmp

Configures high priority for

high-priority-forward

IGMP traffic on VLAN 1.

HP2512(vlan-1)# vlan 1 ip igmp

Same as above command,

high-priority-forward

but in the VLAN 1 context

 

level.

HP2512(vlan 1)# no ip igmp

Returns IGMP traffic to

high-priority-forward

“normal” priority.

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