Quality of service in DWDM

Abstract

The quality of service (QoS) is an important and considerable issue in designing survivable dense wavelength division multiplexing (DWDM) backbones for IP networks. This paper investigates the effect of network topology on QoS delivering in survivable DWDM optical transport networks and design flexibility metrics. The simulation results, a highly connected topology that containing 18 nodes and 35 links, and a less connected topology that containing 21 nodes with 27 links, demonstrate that the network topology has a great influence on QoS delivering by network at optical layer for different applications.