Network Management Twelfth Meeting Principles Of Network Management

Network Management Twelfth Meeting

Principles Of Network Management l Telecommunications management network (TMN) l l provides a framework for telecommunications management. Example: l Remote operation of equipment, l Collection of information which helps faults to be dealt with proactively before a complete failure (e. g. , Tsunami) l Easier interworking of equipment from different manufacturers, l Abstract view of information (hide the physical detail)

The Managing and Managed Network

Telecommunications Management Network

Managing The Multiplexer Telecommunication Network

Agents: Managed Objects l The Agent in: l l Has control of dropping VC 12 from ADMs Has to handle: l The timing extraction, l Pointer decoding, l framing that are associated with multiplexing l framing of the coding functions associated with receiving and transmitting to line.

Managing SDH Networks l Self-healing ring

Ring management l l Sub-network is used to connect a group of local towns. Jeddah provides access out of the ring Each node has ADM Planning process. l l deciding where, when and how a ring should be installed Jeddah Configuration information l l l Plug-in circuit boards Flexibility is important Keep precise records of how each ADM is configured. Look at all of the configuration tables Determine where spare capacity exists in the network. Set up new paths in the network l Send switching instructions to initiate add/drop or crossconnect actions. Rabigh Yanbu Makkah Madinah

Which One is More Feasible Jeddah Rabigh Makkah Madinah Jeddah Rabigh Yanbu Jeddah Yanbu Makkah Madinah Central Record Rabigh Yanbu Makkah Madinah Distributed Record

Embedded and Dedicated Network Manager Jeddah Rabigh Yanbu Makkah Madinah Embedded Data Channel Rabigh Yanbu Makkah Madinah Dedicated Data Connections

Management networks l In Telecommunication Management Network (TMN) l l l The aim of the TMN is to l l Item of telecommunication equipment is an element Elements that are managed by the TMN are called network elements (NE) Provide a definition of how management information is organized. The functional architecture l l Contains a set of functional blocks, It separates out the management functions

Functional Blocks l Workstation Function (WSF) l l provides a graphical user interface (GUI) to the operator Operations System Function (OSF) l l WSF resides in software in a computer Network Element Function (NEF) l OSF NEF Jeddah Rabigh Makkah is implemented in one of the add/drop multiplexers in the ring Yanbu Madinah

Network element function (NEF) l l Provides a home within the telecommunication network for the agent that will manage the network element. This block presents activities – l l l WSF OSF Switching, Alarm notification and performance – Communicates operations from the manager to the network element. Provides the communication boundary between the management and telecommunication networks. NEF

Workstation function (WSF) l l Convert TMN information into a format that can be easily understood by the user – In the opposite direction it will convert user input into a form usable by the TMN. Sits across the TMN boundary Usable by operators. WSF NEF OSF NEF

Other Blocks l Q adaptor function (QAF) block l l Operations system function (OSF) l l Processes the information collected through the other blocks. OSF WSF Mediation function (MF) block l l l Translate non-TMN systems into a TMN format. Mediates data passing between an operations system function and network element function Mediation includes l adaptation, l filtering, and l storage. Reference points l Define the boundary between management function blocks and functions outside the TMN. MF QAF NEF

Physical architecture l The physical architecture of the TMN follows very closely the organization of the functional architecture and is shown below. Each of the reference points is replaced with an interface.

Management functions l Management Domain l l Vertical Separation l l Each manager is responsible for all the activities that relate to its function Planning manager l l It is divided vertically into slices representing some of the defined management functions. Balances demand resource. Forecasts of future demand Demands are entered via the workstation function. Resource information can be provided by the agent in a network element

Management functions: Request Flow OSF WSF Service Request Port 4 Translate Port 3 Port 1 Configuration Manager b Op B Op A NEF Op A = Establish Connection between port 1 and port 4 Op B = Drop b (VC 12) from port 3 NE = Network Elements

Managers’ Role l Planning manager’s l l l l Receive specific requests for service Translated the requests into operations Send the translated request to the network elements to initiate actions, Performance manager l l l 2 Mbps configuration manager l l Balances demand resource. Forecasts of future demand Demands are entered via the workstation function. job is to balance demand resource. Forecasts of future demand Once in service, monitor network elements to detect alarms Monitor other performance indicators defined in the information model. Accounting manager l l collects data on network use in order to apportion or assign the costs to different customers. Bills customers based on many factors l l time of day utilized bandwidth.

Management layers l Business management layer l l l Service management layer’s l l l Carries initiated action from previous layer Maintains quality of service and service contracts. Network management layer l l Meeting the business goals Maximizing utilization of the traffic-carrying capacity of the network, Meets performance targets Minimizes the costs of running the network Manages more than one network element Is interested in actions affecting a network of elements Initiate actions to interconnect a number of network elements in order to provide a circuit between two points. Network element layer l l Process normal data Pass to the network management layer the following: l l unprocessed time sensitive data to the processed normal data

Management Services