Cisco Cisco IOS Software Release 12.0(22)S

http://www.cisco.com/register

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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.

No new or modified standards are supported by this feature. 

No new or modified MIBs are supported by this feature. 

To obtain lists of supported MIBs by platform and Cisco IOS release, and to download MIB modules, 
go to the Cisco MIB website on Cisco.com at the following URL:

RFC 1171, A Border Gateway Protocol 4

RFC 1164, Application of the Border Gateway Protocol in the Internet 

RFC 2283, Multiprotocol Extensions for BGP-4 

RFC 2547, BGP/MPLS VPNs 

The backbone carrier must be properly configured for MPLS VPN operation before the customer carriers 
can access the backbone network. Refer to the 

MPLS Virtual Private Networks (VPNs)

 and the 

MPLS Virtual Private Network Enhancements

 feature modules.

See the following sections to enable a backbone carrier to share its backbone network with a customer 
carrier. Each task entry in the list indicates if the task is optional or required.