10-2.2 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. It drops that traffic
for ports on the VLAN that have no MLD hosts
The will use the last entry of the currently displayed entry as a basis for the next lookup. When
the end is reached the text "No more entries" is shown in the displayed table. Use the Reset
button to start over.
Web Interface
To configure the MLD Snooping VLAN Configuration in the web interface:
1. Click Multicast, MLD Snooping and VLAN Configuration.
2. Click Add New MLD VLAN.
3. Specify the VLAN ID with entries per page.
Figure 10-2.2: MLD Snooping VLAN Configuration
Parameter descriptions:
Delete: Check to delete the entry. The designated entry will be deleted during the next save.
VLAN ID: It displays the VLAN ID of the entry.
Snooping Enabled: Enable the per-VLAN IGMP Snooping. Up to 32 VLANs can be selected.
MLD Querier: Enable to join IGMP Querier election in the VLAN. Disable to act as an IGMP
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 MLD v1, Forced MLD v2. The default compatibility
value is MLD-Auto.
RV: Robustness Variable. The Robustness Variable allows tuning for the expected packet loss on a
network. The allowed range is 1 to 255; the default robustness variable value is 2.
QI(sec): Query Interval. The Query Interval 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(0.1sec): Query Response Interval. The Max Response Time used to calculate the Max Resp Code
inserted into the periodic General Queries. The allowed range is 0 to 31744 in tenths of seconds;
default query response interval is 100 in tenths of seconds (10 seconds).
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