Differentiated QoS routing of restorable sub-lambda connections in IP-over-WDM networks using a multi-layer protection approach

This paper addresses the problem of quality of service (QoS) differentiation of sub-wavelength level label switched path (LSP) requests considering both differentiated survivability services and transmission quality in terms of end-to-end delay requirements of requests. We define different classes of LSP requests and propose a novel QoS differentiation scheme for IP-over-WDM networks. The scheme adopts a multi-layer protection approach consists of dedicated lightpath protection, shared lightpath protection, and shared LSP protection methods. The inter-class backup resource sharing technique is used to improve the performance of different classes of traffic. The routing strategies consider efficient resource utilization and end-to-end delay requirements of different priority requests. In this work, LSPs belonging to different classes with different protection requirements are allowed to traverse the same lightpath to use resources effectively. This grooming approach is efficient in terms of resource usage and it poses several challenges: 1) lightpath protection can be used or modified to satisfy the protection requirement of a newly traversed LSP, and 2) when and how the protection resources are released or updated when an LSP is released while preserving the other LSPs' protection needs. An effective way of distributing signaling messages for failure recovery should also be considered as different protection methods are used. We address all these issues in the proposed scheme. Through simulation experiments, we investigate the impacts of the backup sharing strategies and the routing strategies on connections acceptance rate for different classes of traffic and end-to-end delay requirements of different priority requests. Based on simulation results we demonstrate how the selection of a suitable sharing strategy and a routing strategy can be done that gives the best performance for all the classes and show the effectiveness of the scheme in satisfying both users' QoS requirements and network services providers' requirements.

[1]  Koushik Kar,et al.  Routing restorable bandwidth guaranteed connections using maximum 2-route flows , 2003, TNET.

[2]  Biswanath Mukherjee,et al.  A novel generic graph model for traffic grooming in heterogeneous WDM mesh networks , 2003, TNET.

[3]  Gurusamy Mohan,et al.  Multi-layer protection in IP-over-WDM networks with and with no backup lightpath sharing , 2006, Comput. Networks.

[4]  Biswanath Mukherjee,et al.  A Review of Traffic Grooming in WDM Optical Networks: Architectures and Challenges , 2002 .

[5]  Gurusamy Mohan,et al.  Differentiated QoS routing in GMPLS-based IP/WDM networks , 2002, Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE.

[6]  Roberto Battiti,et al.  Quality of service in IP over WDM: considering both service differentiation and transmission quality , 2004, 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577).

[7]  Gurusamy Mohan,et al.  Protection approaches for dynamic traffic in IP/MPLS-over-WDM networks , 2003, IEEE Commun. Mag..

[8]  Biswanath Mukherjee,et al.  On-line approaches for provisioning connections of different bandwidth granularities in WDM mesh networks , 2002, Optical Fiber Communication Conference and Exhibit.

[9]  Murali S. Kodialam,et al.  Minimum interference routing with applications to MPLS traffic engineering , 2000, Proceedings IEEE INFOCOM 2000. Conference on Computer Communications. Nineteenth Annual Joint Conference of the IEEE Computer and Communications Societies (Cat. No.00CH37064).

[10]  Didier Colle,et al.  Data-centric optical networks and their survivability , 2002, IEEE J. Sel. Areas Commun..

[11]  Byrav Ramamurthy,et al.  Survivable traffic grooming with differentiated end-to-end availability guarantees in WDM mesh networks , 2004, The 13th IEEE Workshop on Local and Metropolitan Area Networks, 2004. LANMAN 2004..

[12]  Byrav Ramamurthy,et al.  Survivable traffic grooming with path protection at the connection level in WDM mesh networks , 2004, First International Conference on Broadband Networks.

[13]  Lou Berger,et al.  Generalized Multi-Protocol Label Switching (GMPLS) Signaling Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) Extensions , 2003, RFC.

[14]  Suresh Subramaniam,et al.  Cost efficient LSP protection in IP/MPLS-over-WDM overlay networks , 2003, IEEE International Conference on Communications, 2003. ICC '03..

[15]  Biswanath Mukherjee,et al.  Traffic grooming for survivable WDM networks - shared protection , 2003, IEEE J. Sel. Areas Commun..

[16]  Chadi Assi,et al.  A simple dynamic integrated provisioning/protection scheme in IP over WDM networks , 2001 .

[17]  Ariel Orda,et al.  QoS Routing Mechanisms and OSPF Extensions , 1999, RFC.

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

[19]  Piotr Cholda.  Reliability of computer systems and networks: fault tolerance, analysis, and design [Book Review] , 2003, IEEE Communications Magazine.

[20]  Murali S. Kodialam,et al.  Integrated dynamic IP and wavelength routing in IP over WDM networks , 2001, Proceedings IEEE INFOCOM 2001. Conference on Computer Communications. Twentieth Annual Joint Conference of the IEEE Computer and Communications Society (Cat. No.01CH37213).

[21]  Arun K. Somani,et al.  Traffic grooming for survivable WDM mesh networks , 2001, OptiComm: Optical Networking and Communications Conference.