8 February 2005 A fast failures locating scheme for multilayer restoration in ASON
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Abstract
How to assemble different restoration scheme in multi-layer networks effectively is a sticking point to survivability of ASON. Among kinds of multi-layer restoration problems, failures locating is the primary one to be solved. Therefore, fast failures locating scheme is proposed in this paper. The main idea of this restoration scheme is that optical layer communicated with control layer dynamically and the restoration process of optical layer and control layer is mutually exclusive. When a new link is established in control layer, the optical layer’s nodes whose related links is used by this new link will recode the two neighbor nodes of this new link. This information is updated online. Thus, when optical layer find failure, the related nodes can transfer the failure message to the corresponding nodes on control layer immediately. Time parameter was set to start different restoration in different layer of networks. Thus, responsibility of optical layer and control layer is clear. Confusion that may be caused by multi-layer restoration was settled.
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Hui He, Ge Fan, "A fast failures locating scheme for multilayer restoration in ASON", Proc. SPIE 5626, Network Architectures, Management, and Applications II, (8 February 2005); doi: 10.1117/12.576982; https://doi.org/10.1117/12.576982
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