Saad Haj Bakry, PhD, CEng, FIEE 1

Network Management Network Management FunctionsFunctions

Saad Haj Bakry, PhD, CEng, FIEE

PRESENTATIONS IN NETWORK MANAGEMENTPRESENTATIONS IN NETWORK MANAGEMENT

Saad Haj Bakry, PhD, CEng, FIEE 2

Objectives / ContentsObjectives / Contents

Network Management Concept

OSI Standard Functions

Additional Functions

Network Management Functions

Saad Haj Bakry, PhD, CEng, FIEE 3

ManagementManagement Concept: An OverviewConcept: An Overview

Management Station RouterAgent

Host

Agent

Host

Agent

Management Protocol

Internet

Network Management Functions

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ManagementManagement Concept: An AgentConcept: An Agent

An AgentA functional unit

(software) that resides in a managed device

It provides management information about the managed device

It accepts instructions to configure the device

A Proxy AgentAn agent, but itdoes not reside inthe manageddevice.

Network Management Functions

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ManagementManagement Concept: StructureConcept: StructureCentralized

– Single management stationDistributed

– A number of management stations– Distribution by “Function” – Distribution by “Geographical Area”

HierarchicalCentralized at routes / Distributed peer systems

Network Management Functions

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ManagementManagement Concept: StructureConcept: Structure

a1 a2 a3 b1 b2 b3

A B

MainLevel (3)

Level (2)

Level (1)

Centralized / Distributed / Hierarchical Management

Principles

Network Management Functions

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OSI Standard FunctionsOSI Standard Functions

Fault ManagementPerformance ManagementConfiguration ManagementSecurity ManagementAccounting Management

Network Management Functions

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Fault Management: Fault Management: DefinitionDefinition

The Discipline ofDetectingDiagnosingBypassingRepairingReportingNetwork Equipment & Service Failures

Network Management Functions

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Fault Management: Fault Management: ActivitiesActivities

Trace (Monitor) & Identify Faults (Abnormal Operation)

Accept Facts & Act on Error-Detection Notification

Carry Out Sequences of Diagnostic TestsCorrect FaultsMaintain and Examine Error Logs

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Fault Management: Fault Management: SummarySummary

Alarm (Categories / Priorities)

Response(Repair / Clear Alarm)

Recording(Report)

Network Management Functions

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Performance Management: Performance Management: DefinitionDefinition

The Utilization ofNetwork Resources

with

The Ability to meetUser Service Level Objectives

Network Management Functions

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Performance Management: Performance Management: ActivitiesActivities

Information Gathering – Current System (Traffic /

Resources)– System History (Logs)

Performance Evaluation (Analysis)For Different States / Conditions

Understanding / Reporting

Network Management Functions

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Performance Management: Performance Management: SummarySummary

Evaluations of the Behaviour & Cost-Effectiveness of Network Resources

Network Management Functions

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Configuration Management: Configuration Management: DefinitionDefinition

Maintaining an Accurate Inventory of HW / SW / Communication Links

(Network Resources) & the Ability to Change the Inventory in a“Smooth & Reliable” Manner in Response to Changing Services Requirements(Changing Resources in Response to Changing Requirements )

Network Management Functions

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Configuration Management: Configuration Management: ActivitiesActivities

Define:– Parameters that Control Network Operation– Managed Objects (Names)

Collect Information on Current StateMonitor Current State ChangesChange Configuration in Response to

Current State Changes

Network Management Functions

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Configuration Management: Configuration Management: SummarySummary

Continuous Information CollectionDetection of ChangesScheduling Resource Provisioning in

Response to Changes

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Security Management: Security Management: DefinitionDefinition

Access Control to theNetwork & its Management Systems

Information Protection fromDisclosure & Modifications

Network Management Functions

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Security Management: Security Management: ActivitiesActivities

Access Management (Users / Use)

Detection of Attacks(Against Information)

Protection Measures(Encryption)

Network Management Functions

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Accounting Management: Accounting Management: DefinitionDefinition

IdentifyingCost

(Charges to be Paid) For the Use of Network Resources

(By Users / Subscribers )

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Accounting Management: Accounting Management: ActivitiesActivities

Set Tariff / Costing(For Use of Resources / Services)

Accumulate Use(Traffic Information / Data Collection / Recording)

Charging / Billing(To be Paid by Subscribers )

Accounting / Book Keeping

Network Management Functions

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Additional FunctionsAdditional Functions

Capacity Planning ManagementStrategic PlanningOperations Support ManagementProgrammability Management

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Capacity Planning ManagementCapacity Planning Management

Fine-Tuning the Network /Periodic Re-Optimization(e.g. Adding / Re-Arranging Trunks)

Scheduled Changes:– Terminating / Avoiding Technologies– Adopting Technologies– Migration

Network Management Functions

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Strategic Planning ManagementStrategic Planning Management

Part of “Business Planning”– New Applications / Growth– Re-Organization / Re-Engineering

Cost Estimations / BenefitsContingency Planning

– Back-Up– Disaster Recovery

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Operation Supports ManagementOperation Supports Management

People / IT Staff (Need / Job Description / Training / Management )

Resources (Equipment Management…)

Maintenance (Programs / Logs / Shifts…)

Information Flow (Transactions / Interactions)

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Programmability ManagementProgrammability Management

Tailoring the Management System to theUnique Characteristics of the ManagedNetwork (Customization)

System Characteristics Reporting Capabilities / Scripts Other Options

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RemarksRemarks

Concept:– “Operation Management”

Standard Functions: – “Operation”

Additional Functions:– Planning / Support

Any Support of:

Performance

Efficiency (Cost-Effectiveness)

Quality

Reliability

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Standard Documents: GeneralStandard Documents: General

Management Framework (ISO:7498)

Management Information Service Overview (ISO: 2683)

Structure of Management Information(ISO: 2684)

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Standard Documents: FunctionsStandard Documents: Functions

ISO Network Management FunctionsFault ISO: 2687

Performance ISO: 2673

Configuration ISO: 2686

Security ISO: 2688

Accounting ISO: 2687

Network Management Functions