Planet Networking & Communication WGS3-2820 User Manual page 280

Robustness - The robustness parameter for the selected interface. This variable allows tuning for the expected
o
packet loss on a subnet. If a subnet is expected to be lossy, the robustness variable may be increased. IGMP is
robust to (robustness variable-1) packet losses.
Startup Query Interval - The interval at which startup queries are sent on the selected interface.
o
Startup Query Count - The number of queries to be sent on startup.
o
Last Member Query Interval - The last member query interval. The last member query interval is the maximum
o
response time inserted into group-specific queries sent in response to leave group messages, and is also the
amount of time between group-specific query messages. This value may be tuned to modify the leave latency of the
network. A reduced value results in reduced time to detect the loss of the last member of a group. This value is not
used for IGMP version 1.
Last Member Query Count - The number of queries to be sent on receiving a leave group report.
o
Querier - The address of the IGMP querier on the IP subnet to which the selected interface is attached.
o
Querier Status - Indicates whether the selected interface is in querier or non querier mode.
o
Querier Up Time - The time in seconds since the IGMP interface querier was last changed.
o
Querier Expiry Time - The time in seconds remaining before the other querier present timer expires. If the local
o
system is the querier, this will be zero.
Wrong Version Queries - The number of queries that have been received on the selected interface with an IGMP
o
version that does not match the IGMP version configured for the interface, over the lifetime of the entry. IGMP
Figure 4-6-59 IGMP Configuration Summary
280
User's Manual of WGS3-2820/WGS3-5220