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Network Management
What is it? What is it used for?
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Network Technology
• Telecommunications Network?• Communication Protocol?• LAN/WAN?• Ethernet?• Hub/Switch/Router?• Multiplexer?• Modem?• SDH/PDH/ATM?
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ADSL Service
S p l i t t e r
D S L A M
D S Lp o r t
B B R A S I P n e t w o r k
D H C Ps e r v e r
R a d i u sp r o x y
R a d i u ss e r v e r
T w i s t e d p a i r
A T M P V C
P S T N
C P ED S LN T
P S T N
S p l i t t e r
A P T 2 ff
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IP Traffic
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ADSL Traffic
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ADSL Connections
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TMN Model
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Scope/Responsibility
• Management systems consists of the fol-lowing components (system responsibility)• Operations System (OS)
• Operations Support System (OSS) • Data Communication Network (DCN)• Workstation (WS)• Network Elements (NE)
• Management functionality
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Operations System
• Operations System (OS) or more recently referred to as Operations Support System (OSS). Is IT-systems which allow operators (either human or external programs) to perform management operations on the managet telecommunication network.
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Data Communication Network
• Data Communication Network (DCN), which is a data communication network used to establish communcation between the operations support system and the managed equipment in the telecommun-ications network, and also between the attached workstations or external man-agement systems and the operations support system
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Workstation
• Workstation (WS). Recent management systems are typically using a graphical user interface, where information is presented as icons and colours are used to indicate status. Commands are often performed using a mouse with point-and click. The workstation is partly within the otted linie, it will typically be based on com-mercial of the shelf product with only a minor part being network management specific.
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Network Elements
• Network Elements (NE) is the common name for pieces of equipment constituting the telecom-munications network controlled and monitored. On the figure such units are exemplified by Exchange and Transmission systems. Many other types of equipment can occur as network elements, multiplexers, IP-routers, ADSL DSLAMs, ATM switches etc. They are all partly included in management, as they are offering management facilities, which can be accessed remotely.
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Management Break Down
Management is frequently divided in two ways:– functional areas: functionality provided– TMN logical layers: levels of abstraction
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Management Functional Areas
• Fault Management
• Configuration Management
• Accounting Management
• Performance Management
• Security Management
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Functional Model
OSIFunctional Model
SecurityManagement
AccountingManagement
PerformanceManagement
ConfigurationManagement
FaultManagement
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TMN Logical Layered Model
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Business Management
Service Management
Network Management
Network Element Management
Fault Management
Configuration Management
Accounting Management
Performance Management
Security Management
Structure of the TMN Functions
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OSI Architecture and Model
NetworkMangement
InformationModel
OrganizationModel
FunctionalModel
CommunicationModel
Figure 3.1 OSl Network Management Model
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Organizational Model
• Manager– Sends requests to agents– Monitors alarms– Houses applications– Provides user interface
• Agent– Gathers information from objects– Configures parameters of objects– Responds to managers’ requests– Generates alarms and sends them to mangers
• Managed object– Network element that is managed– Houses management agent– All objects are not managed / manageable
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Systems Management ModelSystems Management Model
Managed open systemManaging open system
(manager role)MIS-user
Managedobjects
Notifications
emitted
management
operations
Performing
MIS-user(agent role)
Communicating
Notifications
Management operations
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Management Information Model
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Management Information Tree
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The Four-handle Model
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NGOSS Methodology
Syst
emV
iew
Implem
entation
View
NGOSSNGOSSKnowledgeKnowledge
BaseBaseNeed
Mod
el
Validate
Run
Business
View
CustomerOSS
Thu Apr 05 12:47:19 2001
Ordering 3 Use Case
Use Case Diagram
Gateway Services
GatewayInterface
Provider Services
CustomerManagement
Interface
Customer Management Services Product Management Services
ProductRequest<<SDM>>
CustomerContact<<SDM>>
Customer<<SDM>> InvoiceInquiry
<<SDM>>
CreditViolation<<SDM>>
ProductCatalog<<SDM>>
ProductService<<SDM>>
CustomerOrder
Manager ProductFulfillmentManager
Ordering 3Process
***
CustomerRelationshipManagement
ResourceInfras'tureDev't andMngmnt
Supplier/Partner
ServiceDev elopmentand Op'nsManagement
In f ormation
Customer
Assess ServiceA v ailability
Pr ovide ServiceA v ailability Date
DetermineResourceA v ailability
Pr ovide AvailabilityDate
QualifyCustomer
Identify SolutionAlternatives
Update CustomerContact Record
SolutionAlternativesA vailable
No ActionRequired
Pr e-OrderFeasibilityRequest Made
Rec eive Pre-OrderFeas ibility Request
Contract Interface
Service Implementation
Run
-Tim
eV
iew
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eTOM Structure
Operations
Fulfillment Assurance BillingOperationsSupport &Readiness
Customer Relationship Management
Service Management & Operations
Resource Management & Operations
Supplier/Partner Relationship Management
(Application, Computing and Network)
Enterprise Management
Strategic &EnterprisePlanning
Financial & AssetManagement
Enterprise QualityManagement, Process & ITPlanning & Architecture
Stakeholder & ExternalRelations Management
Brand Management,Market Research &Advertising
Human ResourcesManagement
Disaster Recovery,Security & FraudManagement
Research &Development,TechnologyAcquisition
Strategy, Infrastructure & Product
ProductLifecycleManagement
InfrastructureLifecycleManagement
Strategy &Commit
Marketing & Offer Management
Service Development & Management
Resource Development & Management
Supply Chain Development & Management
(Application, Computing and Network)
Customer