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52
Araknis Networks AN-210/310-SW-F/R Manual
Product Manual
Table of Contents
Querier Settings
IGMP Query can be used to ask connected clients if they want to receive a specific multicast service. Then
the ports containing clients requesting to join the service are identified, and multicast data is sent to only
those ports. It then broadcasts the service request to any neighboring multicast switch to ensure that it will
continue to receive the multicast service from a server connected to that switch.
Figure 8.
IGMP Snooping Querier Settings
•
VLAN ID –
VLAN identifier.
•
Querier State –
Enable to make the switch the querier for the VLAN. Typically used when there is no
multicast router acting as the querier.
Default: Disabled
•
Querier Version –
Select IGMPv2 or v3 IGMP Snooping support (regardless of what clients support).
•
Querier Status –
Displays whether the switch is currently acting as the querier for the VLAN.
•
Querier IP –
IP address of the switch acting as querier for the VLAN.
•
Robustness –
Variable for resending querier messages. A higher value means that packets will be resent
more often, useful for congested networks.
Default: 2
•
Interval –
How often the switch sends IGMP host querier messages.
Default: 125 seconds
•
Oper Interval –
Current reported IGMP host querier message interval.
•
Max Response Interval –
Maximum response time advertised in IGMP queries. This value must be lower
than the query interval.
Default: 10 seconds
•
Oper Max Response Interval –
Current reported maximum response time.
•
Last Member Query Counter –
Number of times the switch sends an IGMP query, separated by the last
member query response interval, in response to a host leave message from the last known active host on
the subnet. It is recommended to leave this setting at 2 in order to avoid multicast issues.
Default: 2
•
Oper Last Member Query Counter –
Current reported Last Member Query Counter value.
•
Last Member Query Interval –
Time to wait after receiving a host leave message from the last known
active host on the subnet. If no reports are received in the interval, the group state is deleted. Use this
value to tune how quickly the software stops transmitting on the subnet.
Default: 1 second
•
Oper Last Member Query Interval –
Current reported Last Member Query Interval.
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