Default Igmp Filtering And Throttling Configuration - Cisco WS-C3560-48PS-S Software Configuration Manual

Chapter 19 Configuring IGMP Snooping and MVR
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.
Note IGMPv3 join and leave messages are not supported on switches running IGMP filtering.
These sections describe how to configure IGMP filtering and throttling:
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Default IGMP Filtering and Throttling Configuration

Table 19-7
Table 19-7 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 19-24.
78-16156-01
Default IGMP Filtering and Throttling Configuration, page 19-21
Configuring IGMP Profiles, page 19-22
Applying IGMP Profiles, page 19-23
Setting the Maximum Number of IGMP Groups, page 19-24
Configuring the IGMP Throttling Action, page 19-24
shows the default IGMP filtering configuration.
Configuring IGMP Filtering and Throttling
(optional)
(optional)
(optional)
(optional)
Default Setting
None applied
No maximum set
None defined
Deny the range addresses
"Configuring the IGMP Throttling Action"
Catalyst 3560 Switch Software Configuration Guide
19-21