xStack® DGS-3120 Series Layer 3 Managed Gigabit Ethernet Switch Web UI Reference Guide
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Figure 4-57 IGMP Snooping Parameters Settings window (RI Mode Only)
Figure 4-58 IGMP Snooping Parameters Settings window (EI and SI Mode Only)
The fields that can be configured are described below:
Parameter Description
Query Interval (1-65535)
Specify the amount of time in seconds between general query transmissions. The
default setting is 125 seconds.
Specify the maximum time in seconds to wait for reports from members. The
default setting is 10 seconds.
Robustness Value (1-7)
Provides fine-tuning to allow for expected packet loss on a subnet. The value of the
robustness value is used in calculating the following IGMP message intervals: By
default, the robustness variable is set to 2.
Last Member Query
Interval (1-25)
Specify the maximum amount of time between group-specific query messages,
including those sent in response to leave-group messages. You might lower this
interval to reduce the amount of time it takes a router to detect the loss of the last
Specify the data driven group lifetime in seconds. (EI and SI Mode Only)
Proxy Reporting Source
Enter the source IP of proxy reporting integrated report.
Proxy Reporting State
Use the drop-down menu to enable or disable the proxy reporting. If enabled,
multiple IGMP reports or leave for a specific (S, G) will be integrated into one report
only before sending to the router port.
Specify to enable or disable the querier state.
Fast Leave
Enable or disable the IGMP snooping fast leave function. If enabled, the
membership is immediately removed when the system receive the IGMP leave
If the state is enabled, it allows the switch to be selected as an IGMP Querier
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