Alcatel OS-LS-6224 User Manual page 248

3
Configuring the Switch
VLAN-level Parameters
• VLAN ID — VLAN number of the VLAN on which IGMP is enabled.
• IGMP Snooping Status — Indicates if IGMP snooping is enabled on the VLAN.
When enabled the switch will monitors network traffic to determine which hosts
want to receive multicast traffic. This is also referred to as IGMP Snooping.
(Default: Disperformance, so multicast packets will only be forwarded to those
ports containing multicast group hosts or multicast routers/switches, instead of
flooding traffic to all ports in the subnet (VLAN). The possible field values are:
• Enable — Enables IGMP Snooping on the VLAN.
• Disable — Disables IGMP Snooping on the VLAN.
• IGMP Querier Status — Indicates if the specific VLAN can operate as an IGMP
Querier. The possible field values are:
• Enable — Enables IGMP Querying on the VLAN.
• Disable — Disables IGMP Querying on the VLAN.
• IGMP Querier Version — Indicates the version of IGMP in the VLAN. The possible
values are:
• IGMPv2 — Version 2 of the IGMP protocol.
• IGMPv3 — The latest version of the IGMP protocol.
• Querier IP Address — IP address of the interface which serves as the querier on
the VLAN.
• Source IP address — Defines the interface source IP address from which queries
are sent.
• Auto Learn — Indicates if Auto Learn is enabled on the device. If Auto Learn is
enabled, the device automatically learns where other Multicast groups are located.
Enables or disables Auto Learn on the Ethernet device. The possible field values
are:
• Enable — Enables auto learn
• Disable — Disables auto learn.
• MRouter Timeout — Indicates the amount of the time the Multicast router waits to
receive a message before it times out. The default value is 300 seconds.
• Host Timeout — Indicates the amount of time host waits to receive a message
before timing out. The default time is 260 seconds.
• Leave Timeout — Indicates the amount of time the host waits, after requesting to
leave the IGMP group and not receiving a Join message from another station,
before timing out. If a Leave Timeout occurs, the switch notifies the Multicast
device to stop sending traffic. The Leave Timeout value is either user-defined, or
an immediate leave value. The default timeout is 10 seconds.
Web – Click Layer 2, Multicast, IGMP Snooping. Adjust the IGMP settings as
required, and then click Apply. (The default settings are shown below.)
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