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