Cisco Cisco IOS Software Release 12.2(14)S

Explicit tracking of IGMP Version 3 lite (IGMP v3lite) or URL Rendezvous Directory (URD) channel 
membership reports is not supported in Release 12.0(19)S or earlier releases. In these releases, the leave 
latency for multicast groups sending traffic to hosts using IGMP v3lite or URD will be determined by 
the leave latency of the version of IGMP configured on the hosts (for IGMPv3, the leave latency is 
typically 3 seconds when explicit tracking is not configured).

Cisco IOS IP Configuration Guide, Release 12.2

Cisco IOS IP Command Reference, Volume 3 of 3: Multicast, Release 12.2

IGMP Version 3, Cisco IOS Release 12.1(5)T feature documentation

Specific Multicast with IGMPv3, IGMP v3lite, and URD, Cisco IOS Release 12.1(5)T feature 
documentation

This feature runs on all platforms that support Cisco IOS Release 12.2(14)S, Release 12.2(8)T, Release 
12.0(19)S, or later releases.

Cisco IOS software is packaged in feature sets that are supported on specific platforms. To get updated 
information regarding platform support for this feature, access Cisco Feature Navigator. Cisco Feature 
Navigator dynamically updates the list of supported platforms as new platform support is added for the 
feature.

Cisco Feature Navigator is a web-based tool that enables you to determine which Cisco IOS software 
images support a specific set of features and which features are supported in a specific Cisco IOS image. 
You can search by feature or release. Under the release section, you can compare releases side by side 
to display both the features unique to each software release and the features in common. 

To access Cisco Feature Navigator, you must have an account on Cisco.com. If you have forgotten or 
lost your account information, send a blank e-mail to cco-locksmith@cisco.com. An automatic check 
will verify that your e-mail address is registered with Cisco.com. If the check is successful, account 
details with a new random password will be e-mailed to you. Qualified users can establish an account 
on Cisco.com by following the directions found at this URL:

http://www.cisco.com/register

Cisco Feature Navigator is updated regularly when major Cisco IOS software releases and technology 
releases occur. For the most current information, go to the Cisco Feature Navigator home page at the 
following URL:

Platform support for particular Cisco IOS software releases is dependent on the availability of the 
software images for those platforms. Software images for some platforms may be deferred, delayed, or 
changed without prior notice. For updated information about platform support and availability of 
software images for each Cisco IOS software release, refer to the online release notes or, if supported, 
Cisco Feature Navigator.