Chapter 24
| Multicast Filtering Commands
IGMP Filtering and Throttling
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Default Setting
None
Command Mode
IGMP Profile Configuration
Command Usage
Enter this command multiple times to specify more than one multicast address or
address range for a profile.
Example
Console(config)#ip igmp profile 19
Console(config-igmp-profile)#range 239.1.1.1
Console(config-igmp-profile)#range 239.2.3.1 239.2.3.100
Console(config-igmp-profile)#
ip igmp
authentication
This command enables IGMP authentication on the specified interface. When
enabled and an IGMP JOIN request is received, an authentication request is sent to
a configured RADIUS server. Use the no form to disable IGMP authentication.
Syntax
[no] ip igmp authentication
Default Setting
Disabled
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
◆ If IGMP authentication is enabled on an interface, and a join report is received
on the interface, the switch will send an access request to the RADIUS server to
perform authentication.
◆ Only when the RADIUS server responds with an authentication success
message will the switch learn the group report. Once the group is learned, the
switch will not send an access request to the RADIUS server when receiving the
same report again within a one (1) day period.
◆ If the RADIUS server responds that authentication failed or the timer expires,
the report will be dropped and the group will not be learned. The entry (host
MAC, port number, VLAN ID, and group IP) will be put in the “authentication
failed list”.
◆ The “authentication failed list” is valid for the period of the interval defined by
the command ip igmp snooping vlan query-interval. When receiving the same
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