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DGS-1520 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide
281
After clicking the Edit button, the following page will appear.
Figure 6-75 MLD Interface Settings (Edit) Window
The fields that can be configured are described below:
Parameter Description
Version
Select the MLD version that will be used on the interface here. Options to choose
from are 1 and 2. By default, this value is 2.
Select the Default option to use the default version.
MLD State
Select to enable or disable the MLD feature on this interface here.
Query Interval
Enter the query interval here. This specifies the frequency at which the designated
router sends MLD general-query messages. On receiving the general query, the
MLD listener needs to respond the report packet to claim that it is interested in the
specified multicast group. The range is from 1 to 31744 seconds. By default, this
value is 125 seconds.
Select the Default option to use the default value.
Query Max Response Time
Enter the maximum query response time value here. This specifies the maximum
response time advertised in MLD queries. The range is from 1 to 25 seconds. By
default, this value is 10 seconds.
Select the Default option to use the default value.
Robustness Variable
Enter the robustness variable value here. The robustness variable provides fine-
tuning to allow for expected packet loss on an interface. The range is from 1 to 7.
By default, this value is 2.
Select the Default option to use the default value.
Last Listener Query Count
Enter the last member query count value here. This is used to configure the
number of group-specific or group-source specific queries sent before the router
assumes there are no local members in a group. If the router does not receive
reports from hosts within the timeout period, the router will stop sending the
multicast group traffic to the interface. The range is from 1 to 7. By default, this
value is 2.
Select the Default option to use the default value.
Last Listener Query Interval
Enter the interval for the amount of time between group-specific or group-source-
specific queries here. When an MLD querier receives a packet to leave the group
or channel, it will send a group-specific query or group-source-specific query. The
leave timer starts once the MLD querier receives the packet on an interface. If the
interface does not receive the report packet before the leave timer expires, then
the interface's membership will be removed from the group or channel that it is
leaving. The value of the leave timer is the value of the Last Listener Query
Interval times the Last Listener Query Count. The range is from 1 to 25 seconds.
By default, this value is 1 second.
Select the Default option to use the default value.
Click the Back button to return to the previous window.
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