Real-time modelling of alarm messages in SDH networks

Paul Hayes*, Alan Marshall, Roger Woods

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Testing of Network Management Systems usually involves constructing replicas of the actual networks (`captive offices') which are both costly and cumbersome. In this paper a novel approach is presented which allows alarm messages to be generated and propagated within Synchronous Digital Hierarchy (SDH) networks in `real-time'. The development of the models using a commercial event-driven simulation package is described. Simulation results are presented which reveal how differing network sizes, configurations and alarm masking strategies can affect the number and type of alarm messages presented to the network management system. The models were interfaced to a `live' Element Manager, which allowed them to be verified by comparing to a fully-configured physical network, and which allowed testing of a Network Management System. Some work on enhancing the real-time models using timing information from VHDL descriptions of the Network Equipment is also presented.

Original languageEnglish
Title of host publicationProceedings of the International Symposium on Information Theory & Its Applications 1994. Part 1 (of 2)
Pages921-926
Number of pages6
Publication statusPublished - 1994
EventInternational Symposium on Information Theory & Its Applications - Sydney, Australia
Duration: 20 Nov 199424 Nov 1994

Conference

ConferenceInternational Symposium on Information Theory & Its Applications
Country/TerritoryAustralia
CitySydney
Period20/11/199424/11/1994

ASJC Scopus subject areas

  • General Engineering

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