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738 Configuring IP Multicast
Figure 12-15. IGMP Interface Configuration
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.