NetworkManagementFunctions.pptVIP

Saad Haj Bakry, PhD, CEng, FIEE Network Management Functions Saad Haj Bakry, PhD, CEng, FIEE Objectives / Contents Network Management Concept OSI Standard Functions Additional Functions Management Concept: An Overview Management Concept: An Agent An Agent A 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 Agent An agent, but it does not reside in the managed device. Management Concept: Structure Centralized Single management station Distributed A number of management stations Distribution by “Function” Distribution by “Geographical Area” Hierarchical Centralized at routes / Distributed peer systems Management Concept: Structure OSI Standard Functions Fault Management Performance Management Configuration Management Security Management Accounting Management Fault Management: Definition The Discipline of Detecting Diagnosing Bypassing Repairing Reporting Network Equipment Service Failures Fault Management: Activities Trace (Monitor) Identify Faults (Abnormal Operation) Accept Facts Act on Error-Detection Notification Carry Out Sequences of Diagnostic Tests Correct Faults Maintain and Examine Error Logs Fault Management: Summary Alarm (Categories / Priorities) Response (Repair / Clear Alarm) Recording (Report) Performance Management: Definition The Utilization of Network Resources with The Ability to meet User Service Level Objectives Performance Management: Activities Information Gathering Current System (Traffic / Resources) System History (Logs) Performance Evaluation (Analysis) For Different States / Conditions Understanding / Reporting Performance Management: Summary Evaluations of the Behaviour Cost-Effectiveness of Network Resources Configuration Management: Definition Maintaining an Accurate Inventory of HW / SW / Communication Links (Network Resources) the Ability to Change the Inventory in a “Smoo