Fast Reroute for Node Protection in LDP-based LSPs

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Last updated 2015-09-25 (latest revision 2015-03-24)
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This document describes procedures to support node protection for (unicast) Label Switched Paths(LSPs) established by LDP("Label Distribution Protocol"). In order to protect a node N, the Point of Local Repair (PLR) of N must discover the Merge Points(MPTs) of node N such that traffic can be redirected to them in case node N fails. Redirecting the traffic around the failed node N depends on existing point-to-point LSPs originated from the PLR to the MPTs while bypassing the protected node N. The procedures described in this document are topology independent in a sense that they provide node protection in any topology.


Santosh Esale (
Yakov Rekhter (
Raveendra Torvi (
Luyuan Fang (
Luay Jalil (

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