D-Link DGS-3620-52P - Igmp Check Subscriber Source Network Settings

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DGS-3620 Series Layer 3 Managed Stackable Gigabit Switch Web UI Reference Guide
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To view the following window, click L3 Features > IP Multicast Routing Protocol > IGMP > IGMP Interface
Settings, as shown below:
Figure 5-678 IGMP Interface Settings window
Click the Edit button to re-configure the specific entry.
Click the Edit button to see the following window.
Figure 5-689 IGMP Interface Settings – Edit window
The fields that can be configured are described below:
Parameter Description
Version
Use the drop-down menu to select the IGMP version that will be used to interpret
IGMP queries on the interface.
State
Use the drop-down menu to enables or disables IGMP for the IP interface. The
default is Disabled.
Query Interval (1-
31744)
Enter a value between 1 and 31744 seconds, with a default of 125 seconds. This
specifies the length of time between sending IGMP queries.
Max Response Time
(1-25)
Enter a value between 1 and 25 to specify the maximum amount of time allowed
before sending an IGMP response report. The default time is 10 seconds.
Robustness Variable
(1-7)
A tuning variable to allow for subnetworks that are expected to lose a large number of
packets. A value between 1 and 7 can be entered, with larger values being specified
for subnetworks that are expected to lose larger numbers of packets. The default
setting is 2.
Last Member Query
Interval (1-25)
Enter a value between 1 and 25 to specify the maximum amount of time between
group-specific query messages, including those sent in response to leave group
messages. The default is 1 second.
Click the <<Back button to return to the previous window.
Click the Apply button to accept the changes made.
IGMP Check Subscriber Source Network Settings
This window allows users to configure IGMP check subscriber source network settings. When Check Subscriber
Source Network is enabled on an interface, every IGMP report/leave message received by the interface will be
checked to see whether its source IP is in the same network as the interface. If the check is disabled, an IGMP
report/leave message with any source IP can be processed by IGMP protocol.
To view the following window, click L3 Features > IP Multicast Routing Protocol > IGMP > IGMP Check
Subscriber Source Network Settings, as shown below: