by Aidarous, Salah; Saracco, Roberto

DOI: 10.1023/A:1018750206809
Print publication date: 3/1/1997
View article on SpringerLink

by Cheng, Nam Hong

A high-level approach in network management ispresented in this paper. The approach is based on a newnetwork management model, named the K-model, and anetwork management specification language, named K30.This research has identified and defined two basic unitsof management behavior, from which complex behavior ofmanagement systems can be composed using the concepts ofwell-regarded theories of concurrent systems. Thisapproach formalizes network management semantics andalgorithms, and provides a system of formalspecification for network management.

DOI: 10.1023/A:1018798122739
Print publication date: 3/1/1997
View article on SpringerLink

by Venieris, I. S.; Kalogeropoulos, N. D.; Breemen, J. Van

The Access Network (AN) part of the B-ISDN aimsat concentrating the traffic of a number of differentUser Network Interfaces (UNIs) and routing this trafficto the appropriate Service Node (SN) through a broadbandV interface (referred as VB). Naturally, the emphasis onAN design is to provide cost-efficient implementationswithout degrading the agreed Quality of Service (QoS).This is both the reduction of the AN physical equipmentand in the limitations imposed on the AN functionalitysuch as the inability to interpret signalinginformation. The lack of connection-related informationforces the establishment of several AN internalmechanisms that compensate for the effects of trafficconcentration. In our attempt to generalize and extendresults and experiences obtained from out in the specification, design and implementationof an Asynchronous Transfer Mode (ATM)-based AN, weintroduce the concept of a real-time VB interfaceControl Protocol (V-CP). We demonstrate the V-CP abilityto serve for a number of AN internal functions whilepreserving the highest possible degree of transparencyto the SN. The V-CP services provide for the dynamicoperation of the AN by conveying all thoseconnection-related parameters required for dynamicresource allocation, traffic policing and routing in theAN, as well as information on the status of the ANbefore a new connection is accepted by the SN. The V-CPoperates in real time on a connection by connectionbasis. This is reflected in its simple design making itconsiderably faster than usual managementprotocols.

DOI: 10.1023/A:1018746105901
Print publication date: 3/1/1997
View article on SpringerLink

by Heindel, Lee E.; Hogan, Helen L.; Kasten, Vincent A.

It has become necessary with the ever-increasingvolume of billing data generated by thetelecommunications industry to revisit the whole area ofbilling data collection, starting with Automatic Message Accounting (AMA) data, and evolving to thefuture sources of charging data. The Automatic MessageAccounting Data Networking System (AMADNS) supports thecollection, processing, transfer, and management of AMA data from Generating Systems such ascentral office switches to an array of applications.AMADNS systems must be well-structured and flexible inways that will support future generating systems as they are integrated into the various differentnetworks being created within the telecommunicationsindustry. This paper presents an introduction to thegeneric requirements for AMADNS as presented in Bellcore Generic Requirements for the AutomaticMessage Accounting Data Networking System (AMADNS),Issue 1, Bellcore document GR-1343-CORE.

DOI: 10.1023/A:1018794021830
Print publication date: 3/1/1997
View article on SpringerLink

by Lupu, Emil C.; Sloman, Morris

Roles have been widely used for modeling theauthority, responsibility, functions, and interactions,associated with manager positions within organizations.In this paper, we discuss the issues related tospecifying roles for both human and automated managersof distributed computer systems. The starting point isthat a role can be defined in terms of the authorizationand obligation policies, for a particular managerposition, which specify what actions the manager ispermitted or is obliged to do on a set of targetobjects. This permits individuals to be assigned orremoved from positions without respecifying the policiesfor the role. However these policies are insufficientfor fully specifying relationships between managers andthe targets they manage or between different managerroles. There is a need to specify the interactionprotocols and how managers coordinate and synchronizetheir activities. The role-based framework consists ofa set of tools enabling the creation of roles frompolicies, the specification of the concurrencyconstraints for role activities and the specification ofprotocols for role interaction. In addition, the issuesrelated to conflicts which can occur between policieswithin a role or between interacting roles are brieflydiscussed.

DOI: 10.1023/A:1018742004992
Print publication date: 3/1/1997
View article on SpringerLink

by Bazanowski, Zbynek

Editor’s Note: Zbynek Bazanowski is a doctoralcandidate specializing in managing high-speed networks.I met him in St. Petersburg where he gave an excellenttalk on managing ATM networks and he has done important work in understanding the dynamicbehavior of ATM networks under load. I worry that thecontrol mechanisms for high-speed networks mustanticipate bottlenecks, and relying on feedback control will lead to servo lags that will make thesenetworks inherently unstable when they regularly exceed40% utilization. This is real and not a theoreticalproblem demonstrated by the September, 1995 INTERNETtraffic jams. Here is Zbynek’s prognosis on managingthese high-speed networks.

DOI: 10.1023/A:1018773420922
Print publication date: 3/1/1997
View article on SpringerLink