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DGS-1520 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide
181
After clicking the Modify or Edit button in IGMP Snooping Settings window, the following window will appear.
Figure 5-74 IGMP Snooping Settings (Modify, Edit) Window
The fields that can be configured are described below:
Parameter Description
Minimum Version
Select the minimum IGMP host version that is allowed on the VLAN. Options to
choose from are 1, 2, and 3.
Fast Leave
Select this option to enable or disable the IGMP snooping Fast Leave function. If
enabled, the membership is immediately removed when the system receives the
IGMP done message from the last member. When fast leave is enabled, the
Switch will not generate specific queries. When fast leave is disabled, the Switch
will generate specific queries.
Report Suppression
Select this option to enable or disable the report suppression. The report
suppression function only works for IGMPv1 and IGMPv2 traffic. When report
suppression is enabled, the Switch suppresses the duplicate reports sent by hosts.
The suppression for the same group report or leave will continue until the
suppression time expires. For report or leave messages to the same group, only
one report or leave message is forwarded. The remaining report and leave
messages are suppressed.
Suppression Time
Enter the interval of suppressing duplicate IGMP reports or leaves. The range is
from 1 to 300.
Querier State
Select this option to enable or disable the querier state.
Query Version
Select the general query packet version sent by the IGMP snooping querier.
Options to choose from are 1, 2, and 3.
Query Interval
Enter the interval at which the IGMP snooping querier sends IGMP general query
messages periodically. The range is from 1 to 31744.
Max Response Time
Enter the maximum response time, in seconds, advertised in IGMP snooping
queries. The range is from 1 to 25.
Robustness Value
Enter the robustness variable used in IGMP snooping. The range is from 1 to 7.
Last Member Query Interval
Enter the interval at which the IGMP snooping querier sends IGMP group-specific
or group-source-specific (channel) query messages. The range is from 1 to 25.
Proxy Reporting
Select this option to enable or disable the proxy-reporting function.
Source Address Enter the source IP of proxy reporting. This is available when Enabled is selected
in Proxy Reporting.
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