Journal ArticleDOI
Fiber network survivability
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TLDR
An approach to ring-based network design that simplifies the planning process and minimizes network cost is provided and a representative network study is presented to justify the choice of SPRINGs and matched nodes for the target architecture.Abstract:
At the transport layer in interoffice and interexchange networks, shared protection rings (SPRINGS) interconnected at matched nodes can provide 100% restoration in milliseconds after cable cuts and central office failures. The author introduces the SPRING and explains how its capacity advantage over other ring configurations enables it to be the most economical solution in more applications. Transport restoration technologies-1+1 diversity, digital crossconnect systems, and SPRINGS-in interoffice and interexchange environments are compared. A representative network study is presented to justify the choice of SPRINGs and matched nodes for the target architecture. Recommendations on how to evolve today's asynchronous networks in preparation for a fully survivable SONET ring-based network are also provided. Generic ring planning guidelines and network examples are presented to demonstrate how today's networks can be evolved to provide end-to-end survivable SONET transport. An approach to ring-based network design that simplifies the planning process and minimizes network cost is provided. >read more
Citations
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Journal ArticleDOI
A highly efficient path-restoration protocol for management of optical network transport integrity
TL;DR: A heuristic principle that tests well against integer programming solutions of MCMF routing is presented, and it is predicted that network operators could aggressively optimize their spare capacity, toward theoretical minimums, while still assuring 100% restorability.
Proceedings ArticleDOI
A class of self-healing ring architectures for SONET network applications
TL;DR: The selection of appropriate SONET SHR architectures will depend on the operating telephone companies' economic analysis, emphasis on a multivendor environment, SHR implementation time frame, and standards progress on making change to support a bidirectional ring architecture.
Book ChapterDOI
Chapter 11 Network reliability
TL;DR: In this article, the authors describe a range of issues related to the design and analysis of networks which are subject to the random failure of their components, including data communications networks, voice communication networks, transportation networks, computer architectures, electrical power networks and command and control systems.
Proceedings ArticleDOI
A "dual-tree" scheme for fault-tolerant multicast
TL;DR: A scheme based on a "dual-tree" structure in which a secondary tree for fault-tolerance purpose is built as a complement to a primary multicast tree, which has shorter restoration time and cause less multicasts tree cost increase after restoration than some schemes proposed previously.
Journal ArticleDOI
A cutting plane algorithm for computing k-edge survivability of a network
Young-Soo Myung,Hyun-Joon Kim +1 more
TL;DR: An efficient algorithm for generating lower and upper bounds of k -edge survivability of a network is developed using a preprocessing procedure of reducing the problem size, a heuristic of providing a lower bound, and a cutting plane algorithm of obtaining an upper bound.
References
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Proceedings Article
The selfhealing network : A fast distributed restoration technique for networks using digital crossconnect machines
Journal ArticleDOI
Survivable network architectures for broad-band fiber optic networks: model and performance comparison
TL;DR: The study show that a 'single homing' architecture with 1:N diverse protection provides affordable survivability for fiber cable cuts and for future architectures, the self-healing rings could both improve survivability and reduce costs.
Proceedings ArticleDOI
Principles and technologies for planning survivability-a metropolitan case study
TL;DR: Results of an access link survivability assessment showed that, with some reconfiguration to fiber already in place, the access network could be made survivable in the downtown core.
Proceedings ArticleDOI
Planning a SONET network
TL;DR: The author presents the results of studies conducted to establish deployment strategies and triggers which guarantee the maximum benefit from SONET at each phase of its deployment, and the S/DMS product family, which is specifically designed to capture these benefits in a multivendor environment.