C
HAPTER
4
| Configuring the Switch
IGMP Snooping
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If Fast Leave is enabled, the switch assumes that only one host is
connected to the interface. Therefore, Fast Leave should only be
enabled on an interface if it is connected to only one IGMP-enabled
device, either a service host or a neighbor running IGMP snooping.
Fast Leave is only effective if IGMP snooping is enabled, and IGMPv2 or
IGMPv3 snooping is used.
Fast Leave does not apply to a port if the switch has learned that a
multicast router is attached to it.
Fast Leave can improve bandwidth usage for a network which
frequently experiences many IGMP host add and leave requests.
â—† Throttling - Limits the number of multicast groups to which a port can
belong. (Range: 1-10; Default: unlimited)
IGMP throttling sets a maximum number of multicast groups that a port
can join at the same time. When the maximum number of groups is
reached on a port, any new IGMP join reports will be dropped.
WEB INTERFACE
To configure global and port-related settings for IGMP Snooping:
1. Click Configuration, IPMC, IGMP Snooping, Basic Configuration.
2. Adjust the IGMP settings as required.
3. Click Save.
Figure 51: Configuring Global and Port-related Settings for IGMP Snooping
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