Lantronix
SM12XPA Web User Guide
33848 Rev. A
Page
157
of
473
VLAN Configuration
When MLD snooping is enabled on a VLAN, the switch acts to minimize unnecessary multicast traffic. If the
switch receives multicast traffic destined for a given multicast address, it forwards that traffic only to ports on
the VLAN that have MLD hosts for that address. The switch drops traffic for ports on the VLAN that have no MLD
hosts.
Web Interface
To set MLD Snooping VLAN parameters in the web UI:
1.
Click Multicast, MLD Snooping and VLAN Configuration.
2.
Check or uncheck the Snooping Enabled checkbox and the Querier Election checkbox as required.
3.
Select the Compatibility mode and set the PRI, RV, QI, QRI, LLQI and URI parameters.
4.
Click the Apply button when done.
Figure 9-2.2: MLD Snooping VLAN Configuration
Parameter descriptions
:
VLAN ID
: The VLAN ID of the entry.
Snooping Enabled
: Check to enable per-VLAN MLD Snooping. Up to 64 VLANs can be selected for MLD
Snooping.
Querier Election
: Enable to join MLD Querier election in the VLAN. Disable to act as a MLD Non-Querier.
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 selections are MLD-Auto, Forced
IGMPv1, or Forced IGMPv2. The default compatibility value is MLD-Auto.
RV
: Robustness Variable. The RV allows tuning for the expected packet loss on a network. The valid range is 1 to
255; the default RV value is 2.
QI (sec)
: Query Interval. The QI is the interval between General Queries sent by the Querier. The valid range is 1
to 31744 seconds; the default QI is 125 seconds.
QRI (0.1sec)
: Query Response Interval. The Max Response Time used to calculate the Max Resp Code inserted
into the periodic General Queries. The valid range is 0 to 31744 in tenths of seconds; the default QRI is 100 in
tenths of a second (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 valid range is 0 to 31744 in
tenths of a second; the default LLQI is 10 in tenths of seconds (1 second).
URI (sec)
: Unsolicited Report Interval. The Unsolicited Report Interval is the time between repetitions of a host's
initial report of membership in a group. The valid URI range is 0 to 31744 seconds; the default is 1 second.
