Brocade Communications Systems 53-1002163-02 manual Configuring Igmp snooping querier

Configuring IGMP snooping querier 13

9. Optional: Activate the IGMP querier functionality with additional features.

Configuring IGMP snooping querier

If your multicast traffic is not routed because Protocol-Independent Multicast (PIM) and IGMP are not configured, use the IGMP snooping querier in a VLAN.

IGMP snooping querier sends out IGMP queries to trigger IGMP responses from switches that wish to receive IP multicast traffic. IGMP snooping listens for these responses to map the appropriate forwarding addresses.

Refer to the CEE Command Reference for complete information about the commands in this section.

To configure the IGMP snooping querier, use the following procedure from privileged EXEC mode. 1. Enter interface configuration mode.

switch(config)#interface vlan 25

2. Activate the default IGMP querier functionality for the VLAN.

switch(conf-if-vl-25)#ip igmp snooping querier enable

3. Return to privileged EXEC mode.

switch(conf-if-vl-25)#exit

4. Set the IGMP querier interval for the VLAN.

The valid range is from 1 through 18000 seconds. The default value is 125 seconds.

switch(config)#ip igmp query-interval 125

5. Set the last member query interval.

The valid range is from 100 through 25500 milliseconds. The default value is 1000 milliseconds.

switch(config)#ip igmp last-member-query-interval 2000

6. Set the Max Response Time (MRT).

The valid range is from 1 through 25 seconds. The default value is 10 seconds.

switch(config)#ip igmp query-max-response-time 10

Configuring IGMP snooping mrouter

To configure IGMP snooping mrouter, perform this task in global configuration mode. 1. Enter interface configuration mode for the VLAN port member.

switch(config)#interface vlan 10

2. Configure a the port member to be a multicast router interface.

switch(config-if-vl-10)#ip igmp snooping mrouter interface tengigabitethernet 0/1

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