LevelOne GES-2450 - Manual (Page 46)

Web Smart Switch
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LABEL DESCRIPTION
IGMP Snooping
Select Enable from the drop down box to enable IGMP Snooping. Select
Disable to not to use IGMP Snooping.
When enabled, it simply monitors the IGMP packets passing through it,
picks out the group registration information, and configures the multicast
filters accordingly.
Fastleave Select Enable from the drop down box to enable IGMP Fast-Leave.
Select Disable to not to use IGMP Fast-Leave.
Unknown
Multicast Action Unknown multicast message to the switch. Enable Drop will throw away
the unknown multicast message. Enable Flood will flood the packets.
Query Interval The query interval is the amount of time in seconds between IGMP
General Query messages sent by the router (if the router is the querier
on this subnet). You can also click the scroll arrows to select a new
setting. The default query interval is 125 seconds.
Response Time The time a generic system or functional unit takes to react to a given
input. The default value is 10s.
Router Timeout Save the time of the router port timer in the form. The default value is
125s.
Last Member
Query Interval
The interval that Querier-switch sends Group-Specific Queriers when it
receives a Leave Group message for a group.
Robustness
Variable
The robustness variable is a way of indicating how susceptible the
subnet is to lost packets. IGMP can recover from robustness variable
minus 1 lost IGMP packets. You can also click the scroll arrows to select
a new setting. The robustness variable should be set to a value of 2 or
greater. The default robustness variable value is 2.
Apply
Click Apply to save your changes to the switch.
Host Timeout
Save the timer related the host and its member. The default value is
260s.
Querier Election
Time
It displays the querier election time.
3.3.7.2 IGMP VLAN Setting
Click Switching > IGMP Snooping > IGMP VLAN Setting to access the screen below.