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A simple integrated provisioning and protection scheme in GMPLS-based optical networks

� Abstract— This paper proposes an integrated provisioning and protection scheme in GMPLS-based IP over WDM networks, which takes into account the combined topology and resource availability knowledge on the IP and WDM layers. A GMPLS-based network architecture is discussed for possible implementation of the scheme. We adopt a clustering technique called Blocking Island Paradigm in this scheme to abstract network resources and reduce the searching space. An enhanced BIG network model is then developed. We demonstrate our scheme is a general framework, which can employ various provisioning and protection algorithms and improve their performances. In the simulation, we show the proposed scheme performs very well in terms of call blocking probability.