cours-slides

Ffilali

Description

Networks AdministrationDr. Fethi FILALIINRIA Sophia-Antipolishttp://www.inria.fr/planete/filaliDefinitionl Network Management refers to a set of techniques,policies, and actions for deploying and coordinatingresources in order to plan, operate, administer, analyze,evaluate, design, and expand communication networks tomeet service-level objectives at all times, at a reasonablecost, and with optimum capacity. (From K. Terplan,“Communication Networks Management”. Englewood Cliffs, N.J.:Prentice-Hall (1987))l Resources to be managed– Hardware: Physical media and connections, computercomponents, interconnection components, telecommunicationshardware, …– Software: Operating Systems, telecommunication andnetwork protocols, servers, applications, …DESS-02/03 2Goals of Network Managementl Improve system performance: higher network availability,higher throughput, lower delay, reduce response time,avoid and control congestionl Reduce operational cost: use resources efficiently,increase utilization, optimize expansion plansl Ease of use and flexibility: ease of upgrading andinstallation, integrate sys-tem functionalityl Transparency: management should not be visible to theuser: the disappearance trick !l Security: security of administrative and managementoperationsDESS-02/03 3Top-down View of Management Functionsl Network Provisioning (also called Strategic): Planning andDesign; long-range decisions, setting and evaluatingpolicies.l Network ...

Informations

• Publié par: Vuin
• Nombre de lectures: 8
• Langue: English

Extrait

Networks Administration

Dr. Fethi FILALI

INRIA SophiaAntipolis

http://www.inria.fr/planete/filali

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Definition

Network Managementrefers to a set of techniques, policies, and actions for deploying and coordinating resources in order to plan, operate, administer, analyze, evaluate, design, and expand communication networks to meet servicelevel objectives at all times, at a reasonable cost, and with optimum capacity. (From K. Terplan, “Communication Networks Management”. Englewood Cliffs, N.J.: PrenticeHall (1987))

Resources to be managed –H:erawdraPhysical media and connections, computer components, interconnection components, telecommunications hardware, … –Se:artwofOperating Systems, telecommunication and network protocols, servers, applications, …

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Goals of Network Mana Improve system performance:higher network availability, higher throughput, lower delay, reduce response time, avoid and control congestion

Reduce operational cost:use resources efficiently, increase utilization, optimize expansion plans

Ease of use and flexibility:ease of upgrading and installation, integrate system functionality

Transparency:management should not be visible to the user: the disappearance trick !

Security:security of administrative and management operations

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Network Provisioning(also calledStrategic): Planning and Design; longrange decisions, setting and evaluating policies.

Network Operations(also calledTactical): normal daily operations; usually tactical with shortterm decisions involving administration and analysis for evaluating performance and services, security, accounting, managing changes.

Network Maintenance(also calledOperational): involves immediate decisions and fast reaction; includes monitoring performance data, reacting to alerts and event notifications, fault diagnosis, repairs, testing, recovery, online configuration control, etc.

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Functional Areas of Mana

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Fault Management:Detecting, isolating, and controlling abnormal system behavior. Includes monitoring system state, responding to alarms and trouble tickets, fault diagnosis, isolating failed components, aid in repair, test and recovery. Configuration Management:Setting up a system and initializing it for normal operation. Includes detecting and controlling the state of the network (both logical and physical configurations), setting parameters, defining threshold values, loading configurations, managing changes. Accounting Management:Collecting and processing data related to resource consumption in the system and charging for it. Includes monitoring usage data, surveillance functions, record generation, charging, bill generation, payment collection.

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Functional Areas of Mana

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Performance Management:Monitoring, analyzing, and controlling the system performance. Includes specifying Quality of Service (QoS) parameters and metrics, mapping them to concrete performance measures, monitoring network resources, evaluating and processing data, trend analysis, tuning, and actively controlling parameters to achieve objectives.

Security Management:Controlling access to network resources through use of authentication techniques and authorization policies. Includes threat analyses, defining and enforcing security policies, authentication, access control, encryption, data integrity, monitoring threats, reporting violations.

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Different Levels of Mana

Network Management:Management of communication services, network components, and protocols. Systems Management:Management of the resources of end systems and networked systems including PCs, hosts, servers, OSes. Information Management:Management of the data stored in networked systems. Applications Management:  Management of the distributed applications and services available to the end user. Service and Customer Management:When applications are accessed by customers, provisioning of services and handling customer requests. Service Level Agreements (SLAs)

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Different Levels of Mana

Enterprise Management:Concerned with enterprisewide entities including financial, personnel, technology, and production management from the viewpoint of the company.

Telecommunications Management:Management of the telecommunications network used by a telecomm company to provide telecom services to its customers.

Distributed Systems Management:Same as Systems Management except focuses on the distributed aspects.

Integrated Management:Different management functions and levels are integrated through the use of open and interoperable protocol standards.

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Networklevel Administration

January 13 th, 2003

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Administration basis

Outline

Network and System Tools

Public tools (1)

Administration Protocols

Commercial Plateforms

Public tools (2)

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Main steps: –Network Design –Network Realization –Administration / monitoring / supervision

Objectives:

–provide to users a set of network/system services Transport, resources access Services: mail, www, etc.

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