network management fourteen meeting. principles of network management telecommunications management...
Post on 28-Dec-2015
225 Views
Preview:
TRANSCRIPT
Network Management
Fourteen Meeting
Principles Of Network Management
Telecommunications management network (TMN) provides a framework for telecommunications
management. Example:
Remote operation of equipment, Collection of information which helps faults to be dealt with
proactively before a complete failure (e.g., Tsunami) Easier interworking of equipment from different
manufacturers, Abstract view of information (hide the physical detail)
The Managing and Managed Network
Telecommunications Management Network
Managing The Multiplexer Telecommunication Network
Agents: Managed Objects
The Agent in: Has control of dropping
VC12 from ADMs Has to handle:
The timing extraction, Pointer decoding, framing that are
associated with multiplexing
framing of the coding functions associated with receiving and transmitting to line.
Managing SDH Networks
Self-healing ring
Ring management Sub-network is used to connect a group
of local towns. Jeddah provides access out of the ring Each node has ADM Planning process.
deciding where, when and how a ring should be installed
Configuration information 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
Send switching instructions to initiate add/drop or crossconnect actions.
Jeddah
Rabigh
Madinah
Makkah
Yanbu
Which One is More Feasible
Jeddah
Rabigh
Madinah
Makkah
Yanbu
Jeddah
Rabigh
Madinah
Makkah
Yanbu
Jeddah
Rabigh
Makkah
Madinah
Yanbu
Central Record Distributed Record
Embedded and Dedicated
Jeddah
Rabigh
Madinah
Makkah
Yanbu
Network
Manager
Embedded Data Channel
Jeddah
Rabigh
Madinah
Makkah
Yanbu
Dedicated Data Connections
Network
Manager
Management networks In Telecommunication
Management Network (TMN) Item of telecommunication
equipment is an element Elements that are managed by
the TMN are called network elements (NE)
The aim of the TMN is to Provide a definition of how
management information is organized.
The functional architecture Contains a set of functional
blocks, It separates out the
management functions
Functional Blocks Network Element
Function (NEF) is implemented in one of
the add/drop multiplexers in the ring
Operations System Function (OSF) resides in software in a
computer Workstation Function
(WSF) provides a graphical user
interface (GUI) to the operator
WSF
NEF
OSF
NEF
Jeddah
Rabigh
Madinah
Makkah
Yanbu
Network element function (NEF) Provides a home within the
telecommunication network for the agent that will manage the network element.
This block presents activities – Switching, Alarm notification and performance –
Communicates operations from the manager to the network element.
Provides the communication boundary between the management and telecommunication networks.
WSF
NEF
OSF
NEF
Workstation function (WSF)
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
Q adaptor function (QAF) block Translate non-TMN systems into a
TMN format. Operations system function (OSF)
Processes the information collected through the other blocks.
Mediation function (MF) block Mediates data passing between an
operations system function and network element function
Mediation includes adaptation, filtering, and storage.
Reference points Define the boundary between
management function blocks and functions outside the TMN.
Other Blocks
WSF
NEF
OSF
QAF
MF
Physical architecture
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 Management Domain
It is divided vertically into slices representing some of the defined management functions.
Vertical Separation Each manager is responsible for
all the activities that relate to its function
Planning manager Balances demand and resource. Forecasts of future demand Demands are entered via the
workstation function. Resource information can be
provided by the agent in a network element
NEF
Port1
Port4
Port3
b
Management functions: Request Flow
Service Request
ConfigurationManager
Translate
Op B
Op A = Establish Connection between port1 and port4
Op B = Drop b (VC12) from port 3
NE = Network Elements
Op A
WSF
OSF
Managers’ Role Planning manager’s
Balances demand and resource. Forecasts of future demand Demands are entered via the workstation function. job is to balance demand and resource. Forecasts of future demand
configuration manager Receive specific requests for service Translated the requests into operations Send the translated request to the network elements to initiate actions,
Performance manager Once in service, monitor network elements to detect alarms Monitor other performance indicators defined in the information model.
Accounting manager collects data on network use in order to apportion or assign the costs to different
customers. Bills customers based on many factors
time of day utilized bandwidth.
2Mbps
Management layers Network element layer
Process normal data Pass to the network management layer the
following: unprocessed time sensitive data to the processed normal data
Network management layer 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.
Service management layer’s Carries initiated action from previous layer Maintains quality of service and service contracts.
Business management layer Meeting the business goals Maximizing utilization of the traffic-carrying capacity
of the network, Meets performance targets Minimizes the costs of running the network
Management Services
top related