User Manual

Multicast Routing
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M4200 and M4300 Series ProSAFE Managed Switches Web Management User Manual
7. In the Admin Mode field, select the Enable or Disable option to set the administrative
status of IGMP on the selected routing interface.
The default is Disable.
8. In the Version field, enter the version of IGMP to configure for the selected interface.
Valid values are 1 to 3. The default value is 3. This field is configurable only when IGMP
Interface mode is enabled.
9. In the Robustness field, enter the robustness value.
This variable allows tuning for the expected packet loss on a subnet. If you expect the
subnet to be lossy, enter a higher number for this parameter. IGMP is robust to
robustness variable –1 packet losses. Valid values are 1 to 255. The default value is 2.
10. In the Query Interval field, enter the frequency in seconds at which IGMP host-query
packets are to be transmitted on this interface.
Valid values are 1 to 3600. The default value is 125.
11. In the Query Max Response Time field, enter the maximum query response time, in tenths
of a second, to be advertised in IGMPv2 queries on this interface.
The default value is 100. Valid values are 0 to 255.
12. In the Startup Query Interval field, enter the number of seconds between the transmission
of startup queries on the selected interface.
Valid values are 1 to 300. The default value is 31.
13. In the Startup Query Count field, enter the number of queries to be sent on startup.
The valid values are 1 to 20. The default value is 2.
14. In the Last Member Query Interval field, enter the last member query interval in tenths of a
second.
This is the maximum response time to be inserted into group-specific queries sent in
response to leave group messages, and is also the amount of time between
group-specific query messages. Valid values are from 0 to 255. The default value is 10.
This value is not used for IGMP version 1.
15. In the Last Member Query Count field, enter the number of queries to be sent on receiving
a leave group report.
Valid values are from 1 to 20. The default value is 2.
16. Click the Apply button.
The updated configuration is sent to the switch. Configuration changes take effect
immediately.