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Network Management System Notes(In PPT'S)-Unit -6

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Network Management System Notes(In PPT'S)-Unit  -6 Powered By Docstoc
					                    TMN

• Necessity for interoperability basis for TMN
• Need for management of more than just the
  network components
• Networks / subnetworks need to be managed
• Services - internal and external need management
• Business management needs to be addressed
• TMN joint effort by ITU-T and ISO
                TMN Conceptual Model
            Service provider A                  Service provider B



                  Customers                        Customers




           Services provided by                Services provided by
           Telecommunications                  Telecommunications
                 Provider                            Provider




                   Network                           Network



                          Q3                             Q3


           Operations Systems
                                      X        Operations Systems
                   Q3                                  Q3
              OS      OS                          OS      OS

                      F                                  F


                 Workstation                      Workstation

               System Operators                 System Operators




                      Figure 11.4 TM N Co nce ptual M o de l




• Components
• Interfaces
                     TMN Architecture
                            TMN Architecture




       Functional              Physical                   Informational
      Architecture            Architecture                 Architecture


                      Figure 11.6   TM N Archite ctu re




• Functional architecture:
    • Functional modules or blocks
    • Reference points between modules
• Physical architecture:
    • Physical blocks
    • Physical interfaces between the blocks
• Informational architecture:
    • Information exchange between entities
    • Object oriented
                Functional Architecture
               TMN B        OSF



                             x

      TMN A
                            OSF       q3       OSF



                            q3

                q3
                            MF         f       WSF



                     qx     qx

                                                 MF Mediation F unction
         NEF                QAF                  NEF Network Element Function
                                                 OSF Operations Systems Function
                                                 QAF Q Adapter Function
                                                 WSF Workstation Function




                Figu re 11.7 TM N Fu nctional Arch ite cture



• OSF: Functions performed by Operations
  systems: e.g., NMS, testing, accounting, trouble
   tracking
• NEF: Functions needed to support network
  elements;network elements themselves are not
  part of TMN: e.g., NM agent, MIB, collision rate
                Functional Architecture
                TMN B        OSF



                              x

       TMN A
                             OSF       q3       OSF



                             q3

                 q3
                             MF         f       WSF



                      qx     qx

                                                  MF  Mediation F unction
          NEF                QAF                  NEF Network Element Function
                                                  OSF Operations Systems Function
                                                  QAF Q Adapter Function
                                                  WSF Workstation Function




                 Figu re 11.7 TM N Fu nctional Arch ite cture



• MF: Operations on the information between network
  elements; e.g. filtering, protocol conversion
• MF can be shared between multiple OSSs;
  e.g. RMON
• WSF:Human-TMN activities interface; e.g., GUI
• QAF: Adapter function to accommodate non-TMN
  entities; e.g. proxy server, SNMP-to-CMIP
            TMN Reference Point
Function Block                                          Function Block
                         Reference Point


                 Figu re 11.8 TM N Re fe re nce Point




 • Function blocks connected by conceptual
    interfaces, called reference point
 • Designated by lower case letters (upper case
    letter for physical interfaces)
 • x: Interface between operations systems that
    belong to different domains; e.g., interface between
    two NMSs belonging to two different domains
 • q3: Interface between two OSFs in the same domain
 • qx: Interface between mediation function such as
    RMON and agent in the network element
 • f: Interface to the workstation
            Physical Architecture
                  Operations
                   System
                    (OS)


    TMN                     X          Operations
                                        System
                                         (OS)



                                                  X/F /Q3

                       Data Communications Network (DCN)            Workstation

                                               F/Q3             F
                                       Mediation
                                        Device
                                         (MD)
                       Q3

                                             Qx

            Q3
                       Data Communications Network (DCN)



                                  Qx                  Qx


             Network                                  Network
Q Adapter                       Q Adapter
             Element                                  Element
  (QA)                            (QA)
               (NE)                                     (NE)
     Information Architecture


                    Operations / Requests


Manager                  Responses                    Agent


                     Notifications / Traps



          Figure 11.10 TMN Information Architecture
         Service Architecture
          Business Management

                           q3


           Service Management

                           q3


           Network Management

                           q3


           Element Management

                           q3


        Managed Network Element



F ig u r e 11.11   TM N Se r v ice Ar ch ite ctu r e

				
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