Class of service based protection in multi-layered networks with SRLG constraints

Abstract

Today's optical mesh networks are multi-layered networks, powered by bandwidth-hungry applications that can encounter multiple concurrent failures due to a single fault. Class of Service (CoS) is a level of availability required by the user and provided by the network. It is defined as the end-to-end availability of a light path. Guaranteed or 100% service is the highest type of service class ensuring that a light path with always be available.