Dell PowerConnect M6220 User's Guide - Page 691
Query Max Response Time 1/10 of a second, Last Member Query Interval 1/10 of a second
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The IGMP Interface Configuration page contains the following fields: • Interface - Select the interface for which data is to be displayed or configured from the drop-down menu. • Interface Mode - Select Enable or Disable from the drop-down menu to set the administrative status of IGMP on the selected interface. The default is Disable. • Version - Enter the version of IGMP you want to configure on the selected interface. Valid values are 1 to 3, and the default value is 3. This field is configurable only when IGMP interface mode is enabled. • Robustness - Enter the robustness value. This variable allows tuning for the expected packet loss on a subnet. If you expect the subnet to be lossy, you should enter a higher number for this parameter. IGMP is robust to (robustness variable-1) packet losses. Valid values are from 1 to 255. The default value is 2. • Query Interval (secs) - Enter the frequency in seconds at which IGMP host-query packets are to be transmitted on this interface. Valid values are from 1 to 3600. The default value is 125. • Query Max Response Time (1/10 of a second) - Enter the maximum query response time to be advertised in IGMPv2 queries on this interface, in tenths of a second. The default value is 100. Valid values are from 0 to 255. • Startup Query Interval (secs) - Enter the number of seconds between the transmission of startup queries on the selected interface. The valid values are from 1 to 300. The default value is 31. • Startup Query Count - Enter the number of queries to be sent on startup. The valid values are from 1 to 20. The default value is 2. • Last Member Query Interval (1/10 of a second) - 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. • Last Member Query Count - 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. Configuring an IGMP Routing Interface 1. Open the IGMP Interface Configuration page. 2. Select the interface to configure from the Interface field. 3. Modify the remaining fields as needed. 4. Click Apply Changes. The interface configuration is saved, and the device is updated. Configuring an IGMP Routing Interface using the CLI Command For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide: • IGMP Commands Configuring IP Multicast 689