Fast Reroute
Fast Reroute (FRR) is a mechanism for protecting MPLS TE LSPs from link and node failures by locally repairing the LSPs at the point of failure, allowing data to continue to flow on them while their headend routers attempt to establish new end-to-end LSPs to replace them. FRR locally repairs the protected LSPs by rerouting them over backup tunnels that bypass failed links or nodes. (1)
Prerequisites MPLS TE Fast ReRoute Link and Node Protection
Network must support the following Cisco IOS features:
• IP Cisco Express Forwarding
• Multiprotocol Label Switching (MPLS)
Network must support at least one of the following protocols:
• Intermediate System-to-Intermediate System (IS-IS)
• Open Shortest Path First (OSPF)
Features of MPLS TE FRR Link and Node Protection
-Backup Tunnel Support
-Backup Tunnels can terminate at the Next-Next-Hop to support FRR
-Multiple Backup Tunnels Can Protect the Same Interface
-Backup Tunnels can Provide Scalability
-Backup Bandwidth Protection
-Bandwidth Protection on Backup Tunnels
-Bandwidth Pool Specifications for Backup Tunnels
-Semidynamic Backup Tunnel Paths
-Prioritizing Which LSPs Obtain Backup Tunnels with Bandwidth Protection
-RSVP Hello
1- Cisco IOS Multiprotocol Label Switching Configuration Guide, Release 12.4T, 2008, retrieved from http://www.cisco.com/en/US/docs/ios/mpls/configuration/guide/12_4t/mp_12_4t_book.html , jan 2011
Hi anakappa,
ReplyDeleteCan you tel about the cisco os image that you used it , i work in a projet(MPLS FRR ,IP FRR) but i don t find the right image
thnaks
which ios used here...name plz.
ReplyDeletesir, can you tell the interfaces of each router (eg interface on R1 , 10.10.10.2 ( s1 / 0 ) , 10.10.10.5 ( s1 / 1 ) , 10.10.10.13 ( s1 / 2 ) , 10.10.10.21 ( s1 / 3 ) , thanks, and can your give me your contact sir?
ReplyDelete