PROBLEM STATEMENT:-
A Hybrid Link Protection Scheme for Ensuring Network Service
Availability in Link-state Routing Networks.
INTRODUCTION:-
WITH the rapid development of the internet, more and more mission-critical
and real-time applications, such as VoIP and video streaming, raise stringent
network availability requirement [1], [2]. Unfortunately, network availability is
often reduced by unexpected failures as well as routine operations [3].
Traditional routing algorithms, such as open shortest path first (OSPF) and
Intermediate system-to-intermediate system (IS-IS), are mostly concerned with
finding shortest paths towards each destination, and thus cannot provide good
connectivity under frequent network failures. On detecting a failure, they start a
global link-state advertisement and then recompute routes, inevitably causing
network outage [4], [5]. This highlights the need for mechanisms that possess
fast and efficient recovery capability [6]–[9].
