We evaluate resolution models for resource allocation in a GMPLS distributed control plane for heterogeneous all-optical networks. In a practical regional-to-backbone network environment, the local resolution model is advantageous in resource utilization, protocol compatibility and scalability. The subnetwork resolution model potentially scales to a larger network, although it is less efficient in resource utilization. We propose a lookup procedure, which inter-works with OSPF-TE and RSVP-TE protocols and allocates resources in the local resolution model. In the experiment emulating US nation-wide network, average path setup latency was 250 msec.
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