Cisco Cisco IOS Software Release 12.4(2)XB6

© 2007 Cisco Systems, Inc. All rights reserved.

These release notes describe new features and significant software components for the Cisco 1800 series 
routers that support Cisco IOS  Release 12.4(11)XV. These release notes are updated as needed to 
describe new memory requirements, new features, new hardware support, software platform deferrals, 
microcode or modem code changes, related document changes, and any other important changes. Use 
these release notes with the 

Cross-Platform Release Notes for Cisco IOS Release 12.4T

located on 

.

For a list of the software caveats that apply to the Release 12.4(11)XV releases, see the 

, and see the online 

document. The caveats document 

is updated for every

12.4T maintenance release and is located on 

.

We recommend that you view the field notices for this release to see if your software or hardware 
platforms are affected. If you have an account on Cisco.com, you can find field notices at 

. If you do not have a Cisco.com login 

account, you can find field notices at 

.