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IGMP tab fields


Field Description
QueryInterval
The frequency (in seconds) at which IGMP host query packets are transmitted on the interface. The range is from 1 to 65535, and the default is 125.
QueryMaxResponseTime
The maximum response time (in 1/10 seconds) advertised in IGMPv2 general queries on this interface. This value is not configurable for IGMPv1.
Smaller values allow a router to prune groups faster. The range is from 0 to 255, and the default is 100 tenth seconds (equal to 10 seconds).
Note: This value must be less than the QueryInterval.
Robustness
This parameter allows tuning for the expected packet loss of a network. This value is equal to the number of expected query packet losses per serial query interval, plus 1. If a network is expected to lose query packets, the robustness value should be increased.
The range is from 2 to 255, and the default is 2. The default value of 2 means that one query per query interval may be dropped without the querier aging out.
LastMembQueryIntvl
The maximum response time (in 1/10 seconds) that is inserted into group-specific queries sent in response to leave group messages. It is also the time between group-specific query messages. This value is not configurable for IGMPv1.
Decreasing the value reduces the time to detect the loss of the last member of a group. The range is from 0 to 255, and the default is 10 tenth seconds. Nortel Networks recommends configuring this parameter to values higher than 3. If a fast leave process is not required, Nortel recommends values above 10. (The value 3 is equal to 0.3 of a second and 10 is equal to 1.0 second).
Version
The version of IGMP (1, 2 or 3) that you want to configure on this interface. For IGMP to function correctly, all routers on a LAN must use the same version. The default is version 2.
FastLeaveEnable
Enables fast leave on the interface.
StreamLimitEnable
Enables or disables stream limitation on this port.
Maximum Number Of Stream
Sets the maximum number of streams allowed on this port. The range is from 0 to 65535, and the default is 4.
Current Number Of Stream
Displays the current number of streams.
This is a read-only value.


See also:


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