Configuring IGMP Routing Global Options

A number of IGMP routing options can be configured on RUCKUS devices in global configuration mode.

You must configure the IGMP version globally before entering these options.

The following option configurations are outlined in the following steps:

  • Modify the group membership time: Group membership time defines how long a group will remain active on an interface in the absence of a group report. Values range from 5 through 26000 seconds; the default value is 260.
  • Modify the query interval: The IGMP query interval period defines how often a device will query an interface for group membership. Values range from 2 through 3600 seconds; the default value is 125. The query interval value you enter must be a little more than twice the group membership time.
  • Modify the maximum response time: The maximum response time defines the maximum number of seconds that a client can wait before it replies to the query sent by the router. Values range from 1 through 50 seconds; the default is 10.
  1. Enter global configuration mode. 
    device# configure terminal
  2. Modify the group membership time, in seconds. 
    device(config)# ip igmp group-membership-time 240
    When multiple devices are connected together, all devices must have the same group membership time configured, which must be at least twice the length of the query interval, so that missing one report will not stop traffic.
  3. Modify the query interval, in seconds. 
    device(config)# ip igmp query-interval 120
  4. Modify the IGMP maximum response time, in seconds. 
    device(config)# ip igmp max-response-time 8

The following example globally configures various IGMP options. 

device# configure terminal
device(config)# ip igmp group-membership-time 240
device(config)# ip igmp query-interval 120
device(config)# ip igmp max-response-time 8
Parent topic: IGMPv3