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Network Management
What is it? What is it used for?
Network Technology
• Telecommunications Network?• Communication Protocol?• LAN/WAN?• Ethernet?• Hub/Switch/Router?• Multiplexer?• Modem?• SDH/PDH/ATM?
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
IP Traffic
ADSL Traffic
ADSL Connections
TMN Model
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
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.
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
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.
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.
Management Break Down
Management is frequently divided in two ways:– functional areas: functionality provided– TMN logical layers: levels of abstraction
Management Functional Areas
• Fault Management
• Configuration Management
• Accounting Management
• Performance Management
• Security Management
Functional Model
OSIFunctional Model
SecurityManagement
AccountingManagement
PerformanceManagement
ConfigurationManagement
FaultManagement
TMN Logical Layered Model
Business Management
Service Management
Network Management
Network Element Management
Fault Management
Configuration Management
Accounting Management
Performance Management
Security Management
Structure of the TMN Functions
OSI Architecture and Model
NetworkMangement
InformationModel
OrganizationModel
FunctionalModel
CommunicationModel
Figure 3.1 OSl Network Management Model
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
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
Management Information Model
Management Information Tree
The Four-handle Model
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
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