Network Topology Effect on QoS Delivering in Survivable DWDM Optical Networks

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 using bandwidth/load ratio and design flexibility metrics. The dedicated path protection architecture is employed to establish diverse working and spare lightpaths between each node pair in demand matrix for covering a single link failure model. The simulation results, obtained for the Pan-European and ARPA2 test bench networks, demonstrate that the network topology has a great influence on QoS delivering by network at optical layer for different applications. The Pan-European network, a more connected network, displays better performance than ARPA2 network for both bandwidth/load ratio and design flexibility metrics. Keywords— dedicated path protection, DWDM, network topology, optical networks, QoS, survivability.

[1]  H. T. Mouftah,et al.  A novel survivable routing algorithm for shared segment protection in mesh WDM networks with partial wavelength conversion , 2004, IEEE Journal on Selected Areas in Communications.

[2]  Nicholas G. Paulter,et al.  A measurement of propagation delay , 2007 .

[3]  Jeffery L. Kennington,et al.  Basic mathematical programming models for capacity allocation in mesh-based survivable networks ☆ , 2007 .

[4]  M.S. Leeson,et al.  Survivable wavelength-routed optical network design using genetic algorithms , 2007, 2007 ICTON Mediterranean Winter Conference.

[5]  B. Mukherjee,et al.  New and improved approaches for shared-path protection in WDM mesh networks , 2004, Journal of Lightwave Technology.

[6]  Suresh Subramaniam,et al.  Survivability in optical networks , 2000, IEEE Netw..

[7]  Lei Guo,et al.  Path-based routing provisioning with mixed shared protection in WDM mesh networks , 2006, Journal of Lightwave Technology.

[8]  Luying Zhou,et al.  Efficient multi-layer operational strategies for survivable IP-over-WDM networks , 2006, IEEE Journal on Selected Areas in Communications.

[9]  Biswanath Mukherjee,et al.  A review of fault management in WDM mesh networks: basic concepts and research challenges , 2004, IEEE Netw..

[10]  Rajeev Rastogi,et al.  Algorithms for computing QoS paths with restoration , 2003, IEEE INFOCOM 2003. Twenty-second Annual Joint Conference of the IEEE Computer and Communications Societies (IEEE Cat. No.03CH37428).

[11]  Muriel Medard,et al.  Architectural issues for robust optical access , 2001 .

[12]  Biswanath Mukherjee,et al.  Survivable WDM mesh networks , 2003 .

[13]  R. Shenai,et al.  Hybrid survivability approaches for optical WDM mesh networks , 2005, Journal of Lightwave Technology.

[14]  Kok-Keong Lee,et al.  Building Resilient IP Networks , 2005 .

[15]  Biswanath Mukherjee,et al.  WDM optical communication networks: progress and challenges , 2000, IEEE Journal on Selected Areas in Communications.