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Network Management Principles and Protocols

Network Management Principles and Protocols. Presented by: Mohsen Kahani kahani@ferdowsi.um.ac.ir Ferdowsi University of Mashhad Faculty of Engineering. Table of Contents. Introduction Network Management Functional Areas Fault Management Performance Management Configuration Management

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Network Management Principles and Protocols

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  1. Network ManagementPrinciples and Protocols Presented by: Mohsen Kahani kahani@ferdowsi.um.ac.ir Ferdowsi University of Mashhad Faculty of Engineering

  2. Table of Contents • Introduction • Network Management Functional Areas • Fault Management • Performance Management • Configuration Management • Security Management • Accounting Management • Network Management Standards • Simple Network Management Protocol • OSI Model • Telecommunication Management Network • Web-based Approaches • Conclusion

  3. Introduction • Motivation • A bit of History • Definition ANetwork Management System (NMS) is used to design, organize, analyze and administercomputer and telecommunication networks, in order to maintain a desired level of service at all times.

  4. NM Architecture

  5. NM Functional Areas • Configuration Management • Fault Management • Performance Management • Security Management • Accounting Management

  6. Configuration Management • Inventory management • Network topology services • Service-level agreement • Designing, implementing and processing trouble tickets • Order processing and provisioning • Change management • Directory services

  7. Configuration Management

  8. Fault Management

  9. Fault Management Issues • Alarm Correlation • Trouble Ticketing System • Expert System Application

  10. Performance Management • Definition of performance indicators • Service-oriented indicators • Availability, Response time, Accuracy • Efficiency-oriented indicators • Throughput,Utilization • Performance monitoring • Monitoring against the indicator • Thresholding and exception reporting • Analysis and tuning • Establishing operational standards

  11. Security Management • Risk Analysis • Protecting the Managed Objects • Authentication Procedures • Maintenance of Access Control Routines • Management of Keys for Encipherment • Maintenance of Authorization Facilities • Maintenace of Security Logs • Protecting the NMS

  12. Accounting Management • Identification of cost components • Establishing change-back policies • Definition of charge-back procesdures • Processing vendor bills • Integration of Network accounting into corporate accounting policy

  13. NM Standards • Simple Network Management Protocol • SNMP V1, V2, V3 • OSI Model • Object-based approach • TMN Model • Just a framework for network management systems • Web-based Approach

  14. SNMP • Management Information Base (MIB) • Virtual Information Store of MOs • Information are stored at MOs using different approaches • MIB II added a number of useful variables • Structure of Management Information (SMI) • Framework fot the Definition of SNMP MIBs • Object Information Model for Network Management • Formal Description of the Structure are Given Using a Subset of ASN.1 • Abstract Syntax Notation 1 (ASN.1) • A Standard Object Definition Language • A Standard Way to Encode Objects for Transfer Over a Network • It’s Large,Complex,and not Especially Efficient

  15. SNMP PDU’s • get-request • get-next-request • get-response • set-request • trap • get-bulk-request • inform-request

  16. SNMP Versions • SNMP v1 • Designed to be an interim solution • No security consideration • Not efficient • SNMP v2 • Authentication of the Message Source • Protecting Messages from Disclosure • Placing Access Control on MIBs • Multiple Request Problem solved • Traps Have the Same Format as Other PDUs • 2 New Operations • Much Layers and More Complex • SNMP v3 • Built Upon the Two First Versions of SNMP • Additional Security and Administrative Capabilities

  17. OSI Architecture

  18. TMN • An Important Framework for Management of Telecommunication Networks • A Host of Management Functions and Communications • Operation • Administration • Maintenance • Provision • Chosen By Telco’s for Managing WANs • Enables Communication between Operations System(OSs) andNetwork Elements(NEs)Via aData Communications Network(DCN) • Base for ATM network management

  19. TMN Architecture

  20. Web-based Approaches • Using HTTP instead of SNMP • Web-Based Enterprise Management (WBEM) • Java Management API (JMAPI) • Using Web as an Interface paradigm • Bay Networks’ Optivity Web • Computer Associate’s Unicenter TNG • WNMS

  21. Conclusion • Network management is critical for big networks • The principle of network management was discussed • Some network management standards were explained • Web-based management is becoming a strong player in the field Thank You For Listening

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