IGMP F
ILTERING
AND
T
HROTTLING
16-15
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, the switch can take one of two actions; either “deny” or
“replace.” If the action is set to deny, any new IGMP join reports will be
dropped. If the action is set to replace, the switch randomly removes an
existing group and replaces it with the new multicast group.
Note: IGMP filtering and throttling only applies to dynamically learned
multicast groups, it does not apply to statically configured groups.
Enabling IGMP Filtering and Throttling
To implement IGMP filtering and throttling on the switch, you must first
enable the feature globally and create IGMP profile numbers.
Command Attributes
•IGMP Filter – Enables IGMP filtering and throttling globally for the
switch. (Default: Disabled)
•IGMP Profile – Creates IGMP profile numbers.
(Range:1-4294967295)
Web – Click IGMP Snooping, IGMP Filter Configuration. Create a profile
group by entering the number in text box and clicking Add. Enable the
IGMP filter status, then click Apply.
Figure 16-7 Enabling IGMP Filtering and Throttling