A Novel Dynamic Fault Restoration Mechanism Using a Multiple Ring Approach in WDM Mesh Networks

This work describes a distributed fault restoration algorithm, called the Dynamic Multiple Ring Algorithm (DMRA), for application in WDM mesh networks. This study explores the choice of restoration paths and the assignment of fault-tolerant bandwidth when a link, node, or channel failure occurs according to the change in traffic load, number of nodes, and transmission delay including propagation and switching delays. Accordingly, the primary aim of this work is to use networking segments near faults to share the restoration load throughout a mesh network. Each node searches for restoration paths in their near environment using the proposed DMRA. Nodes use distributed control to search for neighboring nodes and to establish the relationship between them to build numerous logical rings. Nodes can also locate faults in the logical rings. These rings establish the restoration paths. The traffic load over failed links or nodes can be diverted to other paths in the networking segments. The cost of the restoration paths is computed at each node based on both the current capacity and the transmission delay. The selected restoration paths are suitable transmission routes in the network neighborhood. Hence, restoration paths can be identified and wavelength assigned quickly according to network bandwidth and traffic load. Simulation results reveal that the proposed method works extremely quickly and has a high success rate. Consequently, it is very useful for applications in real WDM networks, where the status varies from minute to minute.

[1]  Wayne D. Grover,et al.  Optimal capacity placement for path restoration in STM or ATM mesh-survivable networks , 1998, TNET.

[2]  Chadi Assi,et al.  Wavelength converters: improvement on the performance of optical networks , 2001, SPIE/OSA/IEEE Asia Communications and Photonics.

[3]  Mario Martinelli,et al.  Optical Network Survivability: Protection Techniques in the WDM Layer , 2002, Photonic Network Communications.

[4]  Masayuki Murata,et al.  Incremental capacity dimensioning for reliable IP-over-WDM networks , 2001, OptiComm: Optical Networking and Communications Conference.

[5]  Wayne D. Grover,et al.  Cycle-oriented distributed preconfiguration: ring-like speed with mesh-like capacity for self-planning network restoration , 1998, ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220).

[6]  Charles A. Brackett,et al.  Dense Wavelength Division Multiplexing Networks: Principles and Applications , 1990, IEEE J. Sel. Areas Commun..

[7]  Joseph Kiniry.  Wavelength Division Multiplexing: Ultra High Speed Fiber Optics , 1998, IEEE Internet Comput..

[8]  Thomas E. Stern,et al.  Protection cycles in mesh WDM networks , 2000, IEEE Journal on Selected Areas in Communications.

[9]  Jean-Yves Le Boudec,et al.  Design protection for WDM optical networks , 1998, IEEE J. Sel. Areas Commun..

[10]  Hiroyuki Saito,et al.  Optimal design and evaluation of survivable WDM transport networks , 1998, IEEE J. Sel. Areas Commun..

[11]  Masayuki Murata,et al.  Lightpath Management of Logical Topology with Incremental Traffic Changes for Reliable IP over WDM Networks , 2002 .

[12]  Kumar N. Sivarajan,et al.  Design of Logical Topologies for Wavelength-Routed Optical Networks , 1996, IEEE J. Sel. Areas Commun..

[13]  I. Tokizawa,et al.  Self-healing virtual path architecture in ATM networks , 1995 .

[14]  Muriel Médard,et al.  Generalized loop-back recovery in optical mesh networks , 2002, TNET.

[15]  Wayne D. Grover,et al.  A highly efficient path-restoration protocol for management of optical network transport integrity , 2000, IEEE Journal on Selected Areas in Communications.

[16]  Piet Demeester,et al.  Design of the Optical Path Layer in Multiwavelength Cross-Connected Networks , 1996, IEEE J. Sel. Areas Commun..

[17]  O. J. Wasem,et al.  An algorithm for designing rings for survivable fiber networks , 1991 .

[18]  Imrich Chlamtac,et al.  Lightpath (Wavelength) Routing in Large WDM Networks , 1996, IEEE J. Sel. Areas Commun..

[19]  Hussein T. Mouftah,et al.  Channel protection in WDM mesh networks , 2001, 2001 IEEE Workshop on High Performance Switching and Routing (IEEE Cat. No.01TH8552).