RLDP: A novel risk-level disjoint protection routing algorithm with shared backup resources for survivable backbone optical transport networks

Authors:
Xingwei Wang;Lei Guo;Cunqian Yu
Affiliations:
College of Information Science and Engineering, Northeastern University, P.O. Box 134, Shenyang 110004, China;College of Information Science and Engineering, Northeastern University, P.O. Box 134, Shenyang 110004, China and Key Laboratory of Broadband Optical Fiber Transmission and Communication Networks, ...;College of Information Science and Engineering, Northeastern University, P.O. Box 134, Shenyang 110004, China
Venue:
Computer Communications
Year:
2008

Citing 4
Cited 2

Path-protection routing and wavelength assignment (RWA) in WDM mesh networks under duct-layer constraints

IEEE/ACM Transactions on Networking (TON)
Loopback recovery from double-link failures in optical mesh networks

IEEE/ACM Transactions on Networking (TON)
Shared risk link group (SRLG)-diverse path provisioning under hybrid service level agreements in wavelength-routed optical mesh networks

IEEE/ACM Transactions on Networking (TON)
Failure protection in layered networks with shared risk link groups

IEEE Network: The Magazine of Global Internetworking

An improved lightpath allocation for grade of services in survivable WDM mesh networks

Computer Communications
The effects of multi-layer traffic on the survivability of IP-over-WDM networks

ICC'09 Proceedings of the 2009 IEEE international conference on Communications

Quantified Score

Hi-index	0.24

Visualization

Abstract

In this paper, we investigate the problem of survivable routing in backbone optical transport networks with Shared-Risk Link Groups (SRLG) constraints. We present a new idea that considers the different risk-level protection for difference service level requirements of connection requests. Based on the presented idea, we propose an effective Risk-Level Disjoint Protection (RLDP) routing algorithm for provide different service level for connection requests. In RLDP, the backup path can be partial SRLG-disjoint with the primary path, and the backup wavelengths also can be shared by different backup paths if their corresponding primary paths are risk-level disjoint. Compared with the conventional SRLG-Disjoint Protection (SDP) routing algorithm that provide full SRLG-disjoint survivable routing for each connection request, RLDP can perform better resource utilization ratio and blocking probability. Simulation results are shown to be promising.