NDLI: Shared protection of lightpath with guaranteed switching time over DWDM networks

Content Provider	IEEE Xplore Digital Library
Author	Chen, Yen-Wen Peng, I-Hsuan
Copyright Year	2011
Abstract	Survivability is a very important requirement for the deployment of broadband networks because out of service links can affect volumes of traffic even if it is a very short time. And the data paths of broadband networks, which are critical for traffic engineering, are always necessary to be well protected. The procedure of protection or restoration for a path is initiated when failure is detected within the working path. In order to minimize the influence on transmission quality caused by the failure of links and to provide a definite time for the recovery from the failure, the protection switching time (PST) should be carefully considered in the path arrangement. Several researches have been devoted to construct the protection and restoration schemes of data paths over dense wavelength division multiplexing (DWDM) networks, however, there was rare research on the design of data paths with guaranteed protection switching time. In this paper, the PST-guaranteed scheme, which is based on the concept of short leap shared protection (SLSP), for the arrangement of data paths in DWDM networks is proposed. The proposed scheme provides an efficient procedure to determine a just-enough PST-guaranteed backup paths for a working path. In addition to selecting the PST-guaranteed path, the network cost is also considered in a heuristic manner. The experimental results demonstrate that the paths arranged by the proposed scheme can fully meet the desired PST and the required cost of the selected path is competitive with which of the shared path scheme.
Starting Page	228
Ending Page	233
Page Count	6
File Size	1101827
File Format	PDF
ISSN	12292370
Volume Number	8
Issue Number	2
Language	English
Publisher	Editorial Department of Journal of Communications and Networks
Publisher Date	2006-06-01
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	JCN
Subject Keyword	Switches Wavelength division multiplexing Protection switching Complexity theory Reliability Broadband communication Peer to peer computing protection switching time Dense wavelength division multiplexing (DWDM) path protection
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Information Systems

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