Default Igmp Filtering And Throttling Configuration; Configuring Igmp Profiles - Cisco IE-3000-8TC Software Configuration Manual

Configuring IGMP Filtering and Throttling
IGMP filtering is applicable only to the dynamic learning of IP multicast group addresses, not static
configuration.
With the IGMP throttling feature, you can 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 replace the randomly selected multicast entry with
the received IGMP report.
IGMPv3 join and leave messages are not supported on switches running IGMP filtering.
Note
These sections contain this configuration information:
•
•
•
•
•

Default IGMP Filtering and Throttling Configuration

Table 25-7
Table 25-7
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 25-27.

Configuring IGMP Profiles

To configure an IGMP profile, use the ip igmp profile global configuration command with a profile
number to create an IGMP profile and to enter IGMP profile configuration mode. From this mode, you
can specify the parameters of the IGMP profile to be used for filtering IGMP join requests from a port.
When you are in IGMP profile configuration mode, you can create the profile by using these commands:
•
•
•
Cisco IE 3000 Switch Software Configuration Guide
25-24
Default IGMP Filtering and Throttling Configuration, page 25-24
Configuring IGMP Profiles, page 25-24
Applying IGMP Profiles, page 25-25
Setting the Maximum Number of IGMP Groups, page 25-26
Configuring the IGMP Throttling Action, page 25-27
shows the default IGMP filtering configuration.
Default IGMP Filtering Configuration
deny: Specifies that matching addresses are denied; this is the default.
exit: Exits from igmp-profile configuration mode.
no: Negates a command or returns to its defaults.
Chapter 25
(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
OL-13018-03