Abstract
In ATM networks, two levels of connections are defined: virtual path connections and virtual channel connections. Virtual paths are building blocks of virtual channels. This hierarchy, known as the virtual path concept, provides considerable advantages in design of high-speed networks. In paper authors show that this concept has advantage of providing a means of improving survivability of virtual channels. To this end, they present a simple rerouting protocol, which can be invoked upon failure of an intermediate link or node of a virtual path. This protocol reroutes all affected virtual channels to an alternative virtual path. Due to simplicity of protocol, it can be completed rapidly, thus fulfilling an essential requirement of any rerouting scheme. >
Published Version
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