Planet WGSW-28040 User Manual page 127

The page includes the following fields:
Object
• IGMP Snooping
• Fastleave
•
Unknow Multicast
Action
•
Query Interval
• Response Time
•
Router Timeout
•
Last Member Query
Interval
•
Robustness Variable
Buttons
: Click to apply changes.
Description
Enable or disable the IGMP snooping. The default value is "Disabled".
Enable or disable the fastleave. The default value is "Disabled".
Drop or flood unknown multicast traffic.
Sets the frequency at which the switch sends IGMP host-query messages.
Range: 60-600 seconds;
Default: 125
Sets the time between receiving an IGMP Report for an IP multicast address on a
port before the switch sends an IGMP Query out of that port and removes the
entry from its list.
Range: 10-25 seconds;
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
127
User's Manual of WGSW-28040 / 28040P