The hop-limit approach for spare-capacity assignment in survivable networks
IEEE/ACM Transactions on Networking (TON)
Survivable network management for high-speed ATM networks
Survivable network management for high-speed ATM networks
Design of a Fast Restoration Mechanism for Virtual Path-Based ATM Networks
INFOCOM '97 Proceedings of the INFOCOM '97. Sixteenth Annual Joint Conference of the IEEE Computer and Communications Societies. Driving the Information Revolution
Restoration Strategies and Spare Capacity Requirements in Self-Healing ATM Networks
INFOCOM '97 Proceedings of the INFOCOM '97. Sixteenth Annual Joint Conference of the IEEE Computer and Communications Societies. Driving the Information Revolution
Operations standards for global ATM networks: network element view
IEEE Communications Magazine
Administration of restorable virtual path mesh networks
IEEE Communications Magazine
Comparison of k-shortest paths and maximum flow routing for network facility restoration
IEEE Journal on Selected Areas in Communications
Control algorithms of SONET integrated self-healing networks
IEEE Journal on Selected Areas in Communications
Self-healing ATM networks based on virtual path concept
IEEE Journal on Selected Areas in Communications
Fast restoration of ATM networks
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
Control protocol and its performance analysis for distributed ATM virtual path self-healing network
IEEE Journal on Selected Areas in Communications
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Broadband networks based on ATM technology can carry a large volume of data and can support diverse services like audio, video, and data uniformly. The reliability and availability levels provided by such networks should be very high. Self-healing is an elegant concept in this direction to provide highly reliable networks. A self-healing network can detect failures such as link/node failures and reroute the failed connections automatically using distributed control mechanisms. In this paper, we consider link and node failures including the VP terminating nodes unlike Kawamura and Tokizawa (Self-healing in ATM networks based on virtual path concept, IEEE Journal on Selected Areas in Communications 12 (1) (1994) 120-127). We present here an improved scheme for self-healing in ATM networks based on the concept of backup VPs. The problems we address are: (i) self-healing scheme; and (ii) backup VP routing. Two issues are addressed in the self-healing scheme: (i) backup VP activation protocol; and (ii) dynamic backup VP routing. We propose a new backup VP activation protocol which uses a VC packing strategy which allows the fast and prioritized restoration of critical VCs that were carried by failed VPs. We also propose a distributed dynamic backup VP routing algorithm which reduces the resource contention that may occur when multiple source-destination pairs contend for the routes simultaneously. The objective of the backup VP routing problem is to find a backup VP for each of the working VPs so that the cost of providing the backup is minimized. We propose a heuristic based solution for the backup VP routing problem using the concept of minimum cost shortest paths. We conducted simulation experiments to evaluate the performance of the proposed schemes. The results show that the proposed schemes are effective. Comparison of the results with those of the earlier schemes (R. Kawamura, I. Tokizawa, Self-healing in ATM networks based on virtual path concept, IEEE Journal on Selected Areas in Communications 12 (1) (1994) 120-127; C.J. Hou, Design of a fast restoration mechanism for virtual path-based ATM networks, Proceedings of IEEE INFOCOM'97, Kobe, Japan, April 1997) shows that the proposed schemes perform better.