Cisco Cisco IOS Software Release 12.4(2)XB6

Cisco IOS Cisco IOS Release 12.4(11)XJ supports the following Cisco 3600 series routers:

Cisco 3631

Cisco 3660

For detailed descriptions of the new hardware features, see the 

. 

For a complete list of network modules and interface cards supported on Cisco 3600 series modular 
access routers, refer to the 

table on Cisco.com at the 

following URL:

The “Cisco 3600 Series Relevant Interfaces and Modules” table referenced above is being 
updated to include the new products described in this release note.

For information about supported hardware for this platform and release, refer to the Hardware/Software 
Compatibility Matrix in the 

 at the following location:

To determine the version of Cisco IOS software running on the Cisco 3600 series routers, log in to the 
router and enter the show version EXEC command:

Router> show version

Cisco IOS Software, 3600 Software (C3660-S c3660-js-mz), Version 12.4(11)XJ,  RELEASE 

SOFTWARE (fc1)

TAC Support: http://www.cisco.com/tac

Copyright (c) 1986-2006 by Cisco Systems, Inc.

For general information about upgrading to a new software release, refer to the Software Installation and 
Upgrade Procedures

 

located at 

The Cisco IOS software is packaged in feature sets consisting of software images, depending on the 
platform. Each feature set contains a specific set of Cisco IOS features. Cisco IOS Release 12.4(11)XJ 
supports the same feature sets as Releases 12.4 and 12.4(11)T, but Cisco IOS Release 12.4(11)XJ 
includes new features supported by the Cisco 3600 series routers.

The Cisco IOS images with strong encryption (including, but not limited to, 168-bit [3DES] data 
encryption feature sets) are subject to United States government export controls and have limited 
distribution. Strong encryption images to be installed outside the United States will likely require an