ISSUES IN THE MANAGEMENT OF HETEROGENOUS COMPUTER NETWORKS OPERATED IN MULTIPLE, VARIABLE, LAYERED DOMAINS

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Authors
  1. Dawes, N.W.
  2. Pagurek, B.
Corporate Authors
Carleton Univ, Ottawa ONT (CAN) Dept of Systems and Computer Engineering;Chief of Research and Development, Ottawa ONT (CAN) Director of Research and Development Communications and Space
Abstract
Heterogeneous computer networks managed by several operational authorities are abnormally fragile. The fragility is due to the gaps in the knowledge of the operations managers. The central issue is therefore the management of these gaps; in other words, managing the uncertainty. In detail, failures in such networks are more complex than usual and more frequent than they might be for several reasons. The lack of standards to permit the ready transfer of monitoring and diagnosis information between the different managers is one reason. The frequent current impossibility of direct transfer of the information, even if standardised, is a second. The difficulty of altering the management systems to support new devices and new services is a third. The information gathered by several sources frequently needs to be both coordinated and viewed from several perspectives and such tools are not available. Finally the protective analysis needed to anticipate and reduce the frequency of failures is not, well supported by tools and is not perceived as cost effective in many network operations centres. This report describes work being done to address these issues, some general solutions and some particular solutions. Standards work, techniques for exploiting standards and architectures to support such techniques are also described.
Keywords
UNCERTAINTY
Report Number
SCE-94-19 —
Date of publication
15 Jul 1994
Number of Pages
45
DSTKIM No
95-00191
CANDIS No
146639
Format(s):
Hardcopy;Document Image stored on Optical Disk

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