Planet WGSW-28040 User Manual page 140

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Router Timeout
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Last Member Query
Interval
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Robustness Variable
Buttons
: Click to apply changes.
User's Manual of WGSW-28040 / 28040P / 28040P4
Default: 10
The time the switch waits after the previous querier stops before it considers the
router port
(i.e., the interface which had been receiving query packets) to have expired.
Range: 60-600 seconds;
Default: 125
The last member query interval is the amount of time in seconds that the IGMP
router waits to receive a response to a Group-Specific Query message. The last
member query interval is also the amount of time in seconds between successive
Group-Specific Query messages. You can also click the scroll arrows to select a
new setting.
Range: 1-25 seconds;
Default: 1
The IGMP robustness variable provides fine-tuning to allow for expected packet
loss on a subnet. The robust count automatically changes certain IGMP message
intervals for IGMPv2 and IGMPv3. Increasing the robust count allows for more
packet loss but increases the leave latency of the subnetwork.
Range: 1-255;
Default: 2
Figure 4-7-6 IGMP Inforamtion page screenshot
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