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RPFP: IP fast reroute with providing complete protection and without using tunnels

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3 Author(s)
Baobao Zhang ; Inst. for Network Sci. & Cyberspace, Tsinghua Univ., Beijing, China ; Jianping Wu ; Jun Bi

In today's IP network, if a link or router fails, packets that traverse the failed link or router will be lost until the network re-converges even if there exists another path bypassing the failure. We call such a single failure a valid single failure. Therefore the IETF published a framework called IP Fast ReRoute (IPFRR) which aims to provide protection against such valid single failures before the network re-converges. Based on the IPFRR framework, a lot of methods have been proposed. One category of IPFRR methods is IP-tunnel-based. The IP-tunnel-based IPFRR methods impose extra cost such as the encapsulation cost, on the traffic delivery. In this paper we focus on the otber category of IPFRR methods, no-tunnel-based IPFRR methods, which do not impose any extra cost on the traffic delivery. However, the existing no-tunnel-based IPFRR methods cannot provide complete protection against all the valid single failures. Therefore in this paper we propose a new kind of no-tunnel-based IPERR method named with RPFP which can provide complete protection against all the valid single failures.

Published in:

Quality of Service (IWQoS), 2013 IEEE/ACM 21st International Symposium on

Date of Conference:

3-4 June 2013