Chapter 4: Web management
NS3550-8T-2S Industrial Managed Switch User Manual
135
The page includes the following fields:
Object
Description
Delete
Select this check box to delete the entry. The designated entry will be
deleted during the next save.
VLAN ID
The VLAN ID of the entry.
IGMP Snooping
Enable
Enable the per-VLAN IGMP Snooping. Only up to 32 VLANs can be
selected.
Querier Election
Enable the IGMP Querier election in the VLAN. Disable to act as an IGMP
non-querier.
Querier Address
Define the IPv4 address as source address used in IP header for IGMP
querier election.
When the querier address is not set, system uses IPv4 management
address of the IP interface associated with this VLAN.
When the IPv4 management address is not set, the system uses the first
available IPv4 management address. Otherwise, the 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. Selections include:
IGMP-Auto
(default selection),
Forced
IGMPv1
,
Forced IGMPv2
,
Forced IGMPv3
.
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). The default interface
priority value is
0
RV
Robustness Variable. The RV permits tuning for the expected packet loss on
a network. The allowed range is
1
to
255
. The default robustness variable
value is
2
.
QI
Query Interval. The QI is the interval between general queries sent by the
querier. The allowed range is
1
to
31744
seconds. The default query interval
is 125 seconds.
QRI
Query Response Interval. This is the maximum response time used to
calculate the maximum resp code inserted into the periodic general queries.
The allowed range is
0
to
31744
in tenths of seconds. The default query
response interval is 100 in tenths of seconds (10 seconds).
LLQI (LMQI for IGMP)
Last Member Query Interval. The Last Member Query Time is the time value
represented by the Last Member Query Interval, multiplied by the Last
Member Query Count.
The allowed range is
0
to
31744
in tenths of seconds, default last member
query interval is 10 in tenths of seconds (1 second).
URI
Unsolicited Report Interval. The Unsolicited Report Interval is the time
between repetitions of a host's initial report of membership in a group.
The allowed range is
0
to
31744
seconds, default unsolicited report interval
is 1 second.