Cisco Cisco IOS Software Release 12.2(27)SBC

For information about supported hardware, see the following documents:

For Cisco IOS Release 12.2(25)S, see the 

For Cisco IOS Release 12.2(28)SB, see the 

For Cisco IOS Release 12.2(33)SRA, see the 

For Cisco IOS Release 12.2(33)SXH, see the following documents:

This section covers the following topics:

MPLS HA features provide SSO and NSF capability to the MPLS Label Distribution Protocol (LDP) and 
MPLS Virtual Private Network (VPN) features. MPLS HA includes the following new features:

In addition, the MIBs for MPLS VPNs and MPLS LDP have been enhanced to work in the MPLS HA 
environment. 

The following features have been changed or created to work in the MPLS HA environment: 

 

The following features perform normally in an NSF/SSO environment. They can exist with SSO and 
NSF but do not have the ability to keep duplicate information in a backup Route Processor (RP) on the 
Cisco 7500 series router and in a backup Performance Routing Engine2 (PRE2) on the Cisco 10000 
series router.

 

 (not supported on the Cisco 10000 series router)