Cisco Cisco IOS Software Release 12.4(2)XB6

 lists the features and feature sets that are supported in Cisco IOS Cisco IOS Release 12.4(4)XC.

The table uses the following conventions:

Yes—The feature is supported in the software image.

No—The feature is not supported in the software image.

These feature set tables contain only a selected list of features, which are cumulative for 
Release 12.4(4)nn early deployment releases only (nn identifies each early deployment release). The 
tables do not list all features in each image—additional features are listed in the 

and Release 12.4(4)T Cisco IOS documentation.

There are no new hardware features in this release.

There are no new software features in this release. 

802.1x Basic Authentication

Yes

All. See 

 for images

802.1x with Guest VLAN

802.1x with VLAN Assignment

Extensible Authentication Protocol