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High Level B-ISDN/ATM Traffic Management in Real Time
Responsible organisation
1995 (English)In: Performance Modelling and Evaluation of ATM Networks / [ed] Kouvatsos, Demetres, London: Chapman & Hall , 1995, 177-207 p.Chapter in book (Other academic)
Abstract [en]

We study real time traffic management in the perspective of a four-level model of traffic variations: cells, bursts, sessions, and links. Our interest is focused on the two latter levels: Using virtual channels (VCs) and virtual paths (VPs) as the managed entities on the two levels respectively, we put forward a simple and robust strategy for traffic management in real time: All nodes simultaneously monitor offered traffics and forward the result to a network management centre (NMC); The NMC computes a new set of optimal VPs and compares the result to the existing network; If a change appears profitable, the necessary information is sent back to the nodes and the new design is implemented. Applying our strategy to control general networks subject to traffics which in advance are known only as expectations, we develop simple methods for traffic observation, the optimal observation interval, a fast and efficient algorithm to compute VP networks, a test to determine whether to implement a new design in which costs related to lost traffic are compared to processing costs, and the optimal updating interval. Running our strategy in a simulator, we discover a considerable adaptivity, large savings in transmission capacity, and a performance far better than achieved by fixed redesign according to forecasts. Finally we discuss limits to the range of variations within which our strategy can be applied. The present work applies both to networks using SDH/SONET and/or networks based on ATM, i.e. both to present public switched telephony networks and broadband inte- grated services digital networks, and is a summary and extension of earlier works within this area [3{9].

Place, publisher, year, edition, pages
London: Chapman & Hall , 1995. 177-207 p.
Keyword [en]
Network Architecture and Design, Network Operations
National Category
URN: urn:nbn:se:bth-9740Local ID: 0-412-71140-0OAI: diva2:837670
This article is written under the Project "VP and VC Assignment and Routing"Available from: 2012-09-18 Created: 2000-03-15 Last updated: 2015-06-30Bibliographically approved

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