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In wavelength switched optical networks (WSON), quality of transmission (QoT) can be guaranteed by regenerating the optical signal in intermediate nodes. Regeneration can also offer wavelength conversion. When only few regenerators are placed in the WSON, the main issue is to optimally select the nodes where regeneration and wavelength conversion should take place. This paper proposes a distributed...
In Wavelength Switched Optical Networks (WSONs), sharing of protection wavelengths is an attractive strategy to increase survivability against failures. However, to guarantee an acceptable quality of transmission (QoT), both working and protection paths may need to undergo optical-electrical-optical (OEO) regeneration. With this aim, the placement of a limited number of regenerators is a cost-effective...
In order to provide a reliable multicast service on the MPLS Transport Profile ring structure network, this paper proposes two innovative schemes. The proposed multicast service scheme is designed for the multi-ring structure, which enhances the ring structure's applicability and gives more support for the network resilience. The flow-based end-to-end OAM function is operated independently for each...
We present a routing solution which eliminates the inherent path exploration problem of BGP and thereby enhances survivability in multi-domain networks. The path exploration problem is caused by the dependency among paths learned from neighboring domains. We propose to solve this issue by using two domain level disjoint paths. Our work is based on the aggregated representation of transit domains....
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