Cisco Cisco IOS Software Release 12.2(27)SBC

Copyright © 2003 Cisco Systems, Inc. All rights reserved.

The BGP Support for Dual AS Configuration for Network AS Migrations feature extends the 
functionality of the BGP Local-AS feature by providing additional autonomous-system path 
customization configuration options. The configuration of this feature is transparent to customer peering 
sessions, allowing the provider to merge two autonomous-systems without interrupting customer peering 
arrangements. Customer peering sessions can later be updated during a maintenance window or during 
other scheduled downtime. 

Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image 
support. Access Cisco Feature Navigator at 

. You must have an account on 

Cisco.com. If you do not have an account or have forgotten your username or password, click Cancel at 
the login dialog box and follow the instructions that appear. 

12.0(27)S

This feature was introduced.

12.2(25)S 

This feature was integrated into Cisco IOS Release 12.2(25)S. 

12.3(11)T 

This feature was integrated into Cisco IOS Release 12.3(11)T. 

12.2(27)SBC

This feature was integrated into Cisco IOS Release 12.2(27)SBC.