C
HAPTER
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| Configuring the Switch
IGMP Snooping
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◆ IGMP Querier - When enabled, the switch can serve as the Querier
(on the selected interface), which is responsible for asking hosts if they
want to receive multicast traffic. (Default: Disabled)
A router, or multicast-enabled switch, can periodically ask their hosts if
they want to receive multicast traffic. If there is more than one router/
switch on the LAN performing IP multicasting, one of these devices is
elected “querier” and assumes the role of querying the LAN for group
members. It then propagates the service requests on to any upstream
multicast switch/router to ensure that it will continue to receive the
multicast service. This feature is not supported for IGMPv3 snooping.
WEB INTERFACE
To configure VLAN settings for IGMP snooping and query:
1. Click Configuration, IGMP Snooping, VLAN Configuration.
2. Adjust the IGMP settings as required.
3. Click Save.
Figure 46: Configuring VLAN Settings for IGMP Snooping and Query
CONFIGURING IGMP
FILTERING
Use the IGMP Snooping Port Group Filtering Configuration page to filter
specific multicast traffic. In certain switch applications, the administrator
may want to control the multicast services that are available to end users;
for example, an IP/TV service based on a specific subscription plan. The
IGMP filtering feature fulfills this requirement by denying access to
specified multicast services on a switch port.
CLI REFERENCES
◆ "IGMP Commands" on page 419
PARAMETERS
The following parameters are displayed on the IGMP Snooping Port Group
Filtering Configuration page:
◆ Port – Port identifier. (Range: 1-28)
◆ Filtering Groups – Multicast groups that are denied on a port. When
filter groups are defined, IGMP join reports received on a port are
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