Default Igmp Filtering And Throttling Configuration - Cisco WS-C3750-48PS-S Software Configuration Manual

Configuring IGMP Filtering and Throttling
You can also set the maximum number of IGMP groups that a Layer 2 interface can join.
With the IGMP throttling feature, you can also set the maximum number of IGMP groups that a Layer 2
interface can join. If the maximum number of IGMP groups is set, the IGMP snooping forwarding table
contains the maximum number of entries, and the interface receives an IGMP join report, you can
configure an interface to drop the IGMP report or to remove a randomly selected multicast entry in the
forwarding table and then to add the IGMP group in the report to the table.
IGMPv3 join and leave messages are not supported on switches running IGMP filtering.
Note
These sections describe how to configure IGMP filtering and throttling:
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Default IGMP Filtering and Throttling Configuration

Table 23-7
Table 23-7 Default IGMP Filtering Configuration
Feature
IGMP filters
IGMP maximum number of IGMP groups
IGMP profiles
IGMP profile action
When the maximum number of groups is in forwarding table, the default IGMP throttling action is to
deny the IGMP report. For configuration guidelines, see the
section on page 23-23.
Catalyst 3750 Switch Software Configuration Guide
23-20
Default IGMP Filtering and Throttling Configuration, page 23-20
Configuring IGMP Profiles, page 23-21
Applying IGMP Profiles, page 23-22
Setting the Maximum Number of IGMP Groups, page 23-23
Configuring the IGMP Throttling Action, page 23-23
shows the default IGMP filtering configuration.
Chapter 23
(optional)
(optional)
(optional)
(optional)
Default Setting
None applied
No maximum set
None defined
Deny the range addresses
"Configuring the IGMP Throttling Action"
Configuring IGMP Snooping and MVR
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