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Configuring the Switch
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• An IGMP profile or throttling setting can also be applied to a trunk interface. When
ports are configured as trunk members, the trunk uses the settings applied to the
first port member in the trunk.
• 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.
Command Attributes
• Profile – Selects an existing profile number to assign to an interface.
• Max Multicast Groups – Sets the maximum number of multicast groups an
interface can join at the same time. (Range: 0-255; Default: 255)
• Current Multicast Groups – Displays the current multicast groups the interface
has joined.
• Throttling Action Mode – Sets the action to take when the maximum number of
multicast groups for the interface has been exceeded. (Default: Deny)
- deny - The new multicast group join report is dropped.
- replace - The new multicast group replaces an existing group.
• Throttling Status – Indicates if the throttling action has been implemented on the
interface. (Options: True or False)
• Trunk – Indicates if a port is a trunk member.
Web – Click IGMP Snooping, IGMP Filter/Throttling Port Configuration or IGMP
Filter/Throttling Trunk Configuration. Select a profile to assign to an interface, then
set the throttling number and action. Click Apply.
Figure 3-138 IGMP Filter and Throttling Port Configuration