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Page 70 | AlliedWare™ OS How To Note: IGMP
Configurable IGMP timers and counters > Software versions
Software versions
Since software versions 28
1
-03 and 2.9.
1
, IGMP automatically sets the Default Timeout
Interval to the value from the formula in the section above. Therefore, if you change any of
the Robustness Variable, the LMQC, the Default Query Interval, or the Query Response
Interval, IGMP changes the Default Timeout Interval to match. You can override the Default
Timeout Interval if necessary, but we do not recommend doing so.
The examples in this section come from version 2.9.
1
, so the Default Query Interval
automatically changes.
Initial configuration
These examples use the same network configuration as "IGMP snooping" on page 9. For
convenience, the diagram is reproduced below.
Each example modifies the following base configuration.
Multicast Server
AT-8948
Switch 1:
Querier
Rapier 24i
Switch 2:
Snooper
Client 1
Rapier 24i
Switch 3:
Snooper
Client 2
port 1
port 2 port 3
port 25 port 25
port 26port 26
port 50
(blocked by STP)
port 49
igmp-snooper.eps