Chapter 4. Web Configuration & Operation
101
CHAPTER 3
WEB OPERATION & CONFIGURATION
3.11.1.1 Basic Configuration
IGMP Snooping Configuration: Global Configuration
Snooping Enabled:
Select the checkbox to globally enable IGMP Snooping feature. When enabled, this device will
monitor network traffic and determine which hosts will receive multicast traffic. The switch can passively monitor or
snoop on IGMP Query and Report packets transferred between IP multicast routers and IP multicast service
subscribers to identify the multicast group members. The switch simply monitors the IGMP packets passing through it,
picks out the group registration information and configures the multicast filters accordingly.
Unregistered IPMCv4 Flooding Enabled:
Set forwarding mode for unregistered (not-joined) IP multicast traffic. Select
the checkbox to flood traffic.
IGMP SSM Range:
SSM (Source-Specific Multicast) Range allows the SSM-aware hosts and routers run the SSM service
model for the groups in the address range.
Leave Proxy Enabled:
Suppresses leave messages unless received from the last member port in the group. IGMP leave
proxy suppresses all unnecessary IGMP leave messages so that a non-querier switch forwards an IGMP leave packet
only when the last dynamic member port leaves a multicast group.
Proxy Enabled:
When enabled, the switch performs like “IGMP Snooping with Proxy Reporting” (as defined in DSL
Forum TR-101, April 2006).
Port Related Configuration
Port:
The port number.
Router Port:
Tick the checkbox on a given port to assign it as a router port. If IGMP snooping cannot locate the IGMP
querier, you can manually designate a port which is connected to a known IGMP querier (i.e., a multicast
router/switch). This interface will then join all the current multicast groups supported by the attached router/switch
to ensure that multicast traffic is passed to all appropriate interfaces within the switch.
Fast Leave:
Enable fast leave function if the checkbox is ticked. When a leave packet is received, the switch
immediately removes it from a multicast service without sending an IGMP group-specific (GS) query to that interface.