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Immediate reservation (IR) and advance reservation (AR) are the two main reservation mechanisms currently implemented on large-scale scientific optical networks. They can be used to satisfy both provisioning delay and low blocking for delay-tolerant applications. Therefore, it seems reasonable that future optical network provisioning systems will provide both mechanisms in hybrid IR/AR scenarios....
As a result of the rise of Cloud and Grid computing, network operators are requested to improve their resource provisioning systems. In such scenarios, advance reservation (AR) and immediate reservation (IR) are gaining importance. While the former is capable of delivering low connection blocking for delay-tolerant applications, the latter is used by delay-sensitive ones. Even when both IR and AR...
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