IP Fast Reroute

Abstract:

Mechanisms for recovering from network element (link and node) failures have been worked on for decades. The advent of VoIP, Video on Demand and other low-latency Internet applications now demands that network failures be recovered from in a very short time in order to maintain uninterrupted delivery. To this end a number of methods for temporarily rerouting IP packets around the failures has recently been proposed and evaluated. Upon detecting a failure, IP routers can now quickly switch to precomputed working paths while preventing the creation of loops, thus overcoming the slow convergence of standard IP routing protocols. An overview of the proposed solutions with their own requirements and limitations will be given.

Comment:Ciril has been doing some research on IP Fast Reroute for protecting IP traffic from physical failures.This seminar is a summary of his findings.Anyone interested in survivable IP networks is welcome to attend.The seminar will be fairly informal.