A restoration system for ATM networks

This paper describes a restoration system for ATM networks that is built on top of a pre-planned hop-by-hop routing system in the network and operates on a connection-by-connection basis. Unlike most of the existing proposals that use dedicated spare facilities to protect network traffic against network fault conditions, this scheme simply takes advantage of unused network capacity to redirect traffic from the problem area. Given that ATM switches are being deployed in the network to support switched broadband services, the additional development cost and operations overhead associated with this restoration system is relatively insignificant. The performance of the proposed restoration system is discussed based on simulation studies for video on demand (VoD) applications