Layer 2,3,IPv6+QoS Switch
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Layer 2,3,IPv6+QoS Network Switch User Manual Version 0.1 Page: 946/970
Subnet Mask - The subnet mask for the IP address of the selected interface.
Protocol State - The operational state of IGMP on the selected interface.
Version - The version of IGMP configured on the selected interface.
Query Interval - The frequency at which IGMP host-query packets are transmitted on the
selected interface.
Query Max Response Time - The maximum query response time advertised in IGMPv2
queries sent from the selected interface.
Robustness - The robustness parameter for the selected interface. This variable allows
tuning for the expected 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.
Startup Query Count - The number of queries to be sent on startup.
Last Member Query Interval - The last member query interval. The last member query
interval is the maximum 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.
Querier - The address of the IGMP querier on the IP subnet to which the selected interface
is attached.
Querier Status - Indicates whether the selected interface is in querier or non querier mode.
Querier Up Time - The time in seconds since the IGMP interface querier was last changed.
Querier Expiry Time - The time in seconds remaining before the other querier present
timer expires. If the local 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 version that does not match the IGMP version configured for the
interface, over the lifetime of the entry. IGMP requires that all routers on a LAN be
configured to run the same version of IGMP. Therefore, a configuration error is indicated if
any queries are received with the wrong version number.
Number of Joins - The number of times a group membership has been added on the
selected interface; that is, the number of times an entry for this interface has been added to
the cache table. This gives an indication of the amount of IGMP activity on the interface.
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