Virtual Path Management Framework with Dynamic Routing and Rerouting Schemes in Hierarchical ATM Network

Won-Kyu HONG  Choong-Seon HONG  

IEICE TRANSACTIONS on Communications   Vol.E84-B   No.8   pp.2193-2206
Publication Date: 2001/08/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Terrestrial Radio Communications
ATM,  VP management,  routing,  rerouting,  

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Since each ATM virtual path (VP) contains bundles of virtual channels (VCs), a VP layer network can serve as a server layer and each VC layer network can be a client layer. Therefore the effective VC service provisioning depends completely on the reliability of the VP layer network. We propose the ATM virtual path (VP) management framework with dynamic routing and rerouting schemes in a hierarchical transport network. The routing algorithm aims to provide the globally optimal route in a hierarchical network environment from the perspectives of maximization of network resource utilization and satisfaction of the end user's QoS requirement. The rerouting algorithm guarantees network survivability in the event of network faults or performance degradations. We also propose the implementation model of the ATM virtual path network management system (VP-NMS). Lastly, we evaluate the routing and rerouting performance for a real network, the High Speed Information Network (HSIN) of Korea Telecom.