Planet WGSW-28040 - Page 127

User’s Manual of WGSW-28040 / 28040P
127
The page includes the following fields:
Object Description
• IGMP Snooping
Enable or disable the IGMP snooping. The default value is "Disabled".
• Fastleave
Enable or disable the fastleave. The default value is "Disabled".
• Unknow Multicast
Action
Drop or flood unknown multicast traffic.
• Query Interval
Sets the frequency at which the switch sends IGMP host-query messages.
Range: 60-600 seconds;
Default: 125
• Response Time
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
• Router Timeout
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
• Last Member Query
Interval
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
• Robustness Variable
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
Buttons
: Click to apply changes.