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In this paper, we propose an ILP (Integer Linear Programming) based solution for Diverse Path Routing with Node Inclusion (DPRNI). First, DPRNI is introduced as a relevant routing problem in hierarchical traffic grooming of clustered networks where the interconnection between clusters is allowed via predefined hubs only. Then an ILP based solution is proposed, which guarantees the cost optimality...
When dimensioning GMPLS-controlled NG-SDH networks several SDH and GMPLS specific requirements must be fulfilled. In SDH there are two different ways for concatenating VC-4 containers, which determine the packing rules of the service inside a frame. GMPLS handles each concatenated SDH connection as a single GMPLS service, thus it has to be placed entirely into one STM frame. To add a new service to...
To increase the capacity efficiency of provisioning oriented optical networks we have already proposed a three phase network development lifecycle, i.e. traditional provisioning phase and network extension phase extended with a consolidation phase [1]. Consolidation is a re-optimization and re-arrangement of the network on a certain extent. One of the most important questions concerning the consolidation...
The permanently increasing data traffic of IP services and broadband applications has become the largest traffic component in transport networks. The requirements of the dominant IP-client result in major changes of the architecture and in the networking paradigm of the optical layer. Due to these changes fast provisioning capabilities enabled by signalling intelligence and automated switching flexibility...
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