User’s Manual of GS-5220 LCD Series
266
• Querier Address
Define the IPv4 address as source address used in IP header for IGMP
Querier election.
â– When the Querier address is not set, system uses IPv4
management address of the IP interface associated with this
VLAN.
â– When the IPv4 management address is not set, system uses the
first available IPv4 management address. Otherwise, system uses
a pre-defined value.
By default, this value will be 192.0.2.1
• Compatibility
Compatibility is maintained by hosts and routers taking appropriate
actions depending on the versions of IGMP operating on hosts and
routers within a network. The allowed selection is IGMP-Auto,
Forced IGMPv1, Forced IGMPv2, Forced IGMPv3.
Default compatibility value is IGMP-Auto.
• PRI
(PRI) Priority of Interface. It indicates the IGMP control frame priority
level generated by the system. These values can be used to prioritize
different classes of traffic.
The allowed range is 0 (best effort) to 7 (highest), default interface
priority value is 0
• RV
Robustness Variable. The Robustness Variable allows tuning for the
expected packet loss on a network.
The allowed range is 1 to 255, default robustness variable value is 2.
• QI
Query Interval. The Query Interval is the interval between General
Queries sent by the Querier. The allowed range is 1 to 31744 seconds,
default query interval is 125 seconds.
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