Dell BigIron RX Series, Configuration Manual

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BigIron RX Series Configuration Guide 591
53-1002253-01
IGMP v3
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Setting the query interval
The IGMP query interval period defines how often a switch will query an interface for group
membership. Possible values are 10 – 3,600 seconds and the default value is 125 seconds, but
the value you enter must be a little more than twice the group membership time.
To modify the default value for the IGMP query interval, enter the following.
BigIron RX(config)# ip igmp query-interval 120
Syntax: ip igmp query-interval <10-3600>
The interval must be a little more than two times the group membership time.
Setting 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. Possible values are from 20 – 7200 seconds and the default value is 140
seconds.
To define an IGMP membership time of 240 seconds, enter the following.
BigIron RX(config)# ip igmp group-membership-time 240
Syntax: ip igmp group-membership-time <20-7200>
Setting 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. Possible values are 1 – 10. The default is 10.
To change the IGMP maximum response time, enter a command such as the following at the global
CONFIG level of the CLI.
BigIron RX(config)# ip igmp max-response-time 8
Syntax: [no] ip igmp max-response-time <num>
The <num> parameter specifies the maximum number of seconds for the response time. Enter a
value from 1 – 10. The default is 10.
Displaying IGMPv3 information
The sections below present the show commands available for IGMP V3.
Displaying IGMP group status
You can display the status of all IGMP multicast groups on a device by entering the following
command.