Restoration routing in multi-protocol label switching (MPLS) networks

Abstract

MPLS Networks are known to provide flexibility of IP networks without compromising scalability. Guaranteed QoS in an MPLS network requires backup paths to be preset in the network. This tutorial introduces the single-layer restoration routing by placing primary as well as backup paths in MPLS networks. Our focus will be on characterizing the fault models, computing and establishing backup paths, and bandwidth sharing along such backup paths. A quick overview of MPLS routing will be provided followed by the routing information scenarios and the type of information propagated through routing protocols and their extensions. We will also cover the information locally stored at MPLS nodes that assists in efficient restoration routing and the algorithms for computing backup paths using the local and propagated infonnation. Biography: Zartash Afzal Uzmi received his B.Sc. in Electrical Engineering from UET, Taxila and M.S. and Ph.D. in Electrical Engineering from Stanford University, CA. He is currently an Assistant Professor in the Computer Science and Engineering Department at Lahore University of Management Sciences (LUMS) where he is part of the communications and networking group. Within this group, he is heading the efforts in MPLS restoration routing, Class-based preemption, and multilayer recovery. His interests lie in routing protocols, information capacity of ad hoc networks, and signal processing for communications.