Data Communications - Chapter twelve

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Network ManagementNetwork Management

After studying this Chapter you should: Describe what is required to manage the day-to-

day operations of networks Explain network management organization Describe

configuration management performance and fault management cost management

Describe the role and functions of network management software and hardware tools

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IntroductionIntroduction Network Management - the process of

operating, monitoring and controlling the network to ensure it operates as intended and provides value to its users. CATER to the needs of the user

Consistent Accurate Timely Economically feasible Relevant

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What are the What are the primaryprimary network network management management functionsfunctions??

Design and implement new networks and network upgrades

Manage the day-to-day operation of existing networks

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What is theWhat is the importance importance of of network management?network management?

Communications networks contribute to the Communications networks contribute to the bottom linebottom line Communications networks can be Communications networks can be strategic competitive strategic competitive

toolstools Effective network management results in Effective network management results in availability, availability,

reliability, and efficiencyreliability, and efficiency Network management is both the Network management is both the brainbrain and and heartheart of the of the

corporate communications networkcorporate communications network

To the corporation...To the corporation...

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What is theWhat is the importance importance of of network management?network management?

Communications network management is a Communications network management is a large large and and rapidly expanding rapidly expanding businessbusiness

Network management offerings is a Network management offerings is a key factor key factor when when firms make decisions including:firms make decisions including:• public versus private networkpublic versus private network• carrier-based versus carrier-based versus CPECPE-based (-based (CCustomer ustomer PPremises remises

EEquipment)quipment)

Reputation as a good network management provider Reputation as a good network management provider helps sell other products/serviceshelps sell other products/services

To the network/product/service provider...To the network/product/service provider...

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What are the network What are the network management management needsneeds??

Network management should contribute to the Network management should contribute to the bottom linebottom line::• Decrease expenseDecrease expense• Increase revenueIncrease revenue• Increase productivityIncrease productivity• Improve serviceImprove service• Provide image as a leading edge companyProvide image as a leading edge company

Network management should provide the company Network management should provide the company with a with a strategic competitive toolstrategic competitive tool

As Perceived by the Corporate Executive...As Perceived by the Corporate Executive...

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Provide good Provide good performanceperformance Be easy to Be easy to operate operate and and correctcorrect problems problems Be Be flexible flexible and provide customer controland provide customer control Work in aWork in a multi-supplier multi-supplier environmentenvironment Be well utilized and Be well utilized and adaptiveadaptive for growth for growth Provide for Provide for management reporting management reporting capabilitiescapabilities

As Perceived by the Communications Manager...As Perceived by the Communications Manager...

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Provide good Provide good performanceperformance Be Be transparenttransparent and easy to use and easy to use Provide for a one-stop, responsive Provide for a one-stop, responsive help deskhelp desk Be Be cost effectivecost effective

As Perceived by the End User...As Perceived by the End User...

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The Shift to LANs and the WebThe Shift to LANs and the Web 60% of all processing power is done on LANs Growing 40% per year Web services growing even more dramatically Integration

mixing technologies & protocols - requires expertise and equipment

cultural - management and user

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Integrating LANs, WANs & Integrating LANs, WANs & the Webthe Web

Communication and Cooperation shift in power organizational impact single communications and networking goal

Data communications network organization written charter

purpose operational philosophy long-range goals

Goals policies procedures

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Integrating Voice and DataIntegrating Voice and Data Why

changing communications technologies high cost of maintaining separate facilities low efficiency and productivity

Roadblocks loss of jobs loss of power political pressures

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CorporateCorporateNetworkNetwork

ManagementManagement

Admini-Admini-strationstrationMgmtMgmt

CapacityCapacityMgmtMgmt ProvisioningProvisioning

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AccountingAccountingMgmtMgmt

Perfor-Perfor-mancemanceMgmtMgmt

Configura-Configura-tiontion

MgmtMgmt

FaultFaultMgmtMgmt

SecuritySecurityMgmtMgmt

Network Management FunctionsNetwork Management Functions

LessLess

MoreMore

Real-timeReal-timeOrientationOrientation

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Equipment InventoryEquipment Inventory Corporate DirectoryCorporate Directory Database AdministrationDatabase Administration Management ReportsManagement Reports





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Demand ForecastingDemand Forecasting Network Design (Chapter 10)Network Design (Chapter 10) Network Engineering (Chapter 10)Network Engineering (Chapter 10)





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OrderingOrdering Installation (Moves, Adds, Changes)Installation (Moves, Adds, Changes) Pre-service TestingPre-service Testing





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Traffic Usage RecordingTraffic Usage Recording BillingBilling Cost ManagementCost Management





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Network Management Network Management FunctionsFunctions

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Cost ManagementCost Management Control of continually escalating costs Network management staff

systems management end-user support

WAN circuits Hardware

client computers network devices

Application Software

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DelaysDelays BlockingBlocking DiscardsDiscards

ErrorsErrors AvailabilityAvailability ReliabilityReliability

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Performance ManagementPerformance Management

Performance management - ensuring the network is operating as efficiently as possible

Network monitoring - keeping track of the operation of various network circuits and devices for performance and fault discovery

Goes hand-in-hand with Fault Management

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Network MonitoringNetwork Monitoring Network management software

operational statistics physical network parameters

network failures devices malfunctioning devices not responding

logical network parameters performance measures response times traffic on the circuit

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Network Management Network Management ToolsTools

Network management software Previously discussed

Network management hardware Breakout box - voltage meter Fiber light meter Cable Analyzer Protocol Analyzer/Data Line Monitor Automated Test Equipment

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Network ReconfigurationNetwork Reconfiguration Bandwidth ReallocationBandwidth Reallocation Traffic ReroutingTraffic Rerouting





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Configuration ManagementConfiguration Management Managing the network’s hardware and software

documentation hardware and software upgrades network diagrams and maps circuit diagrams software licenses hardware and software manuals vendor contracts and agreements

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Configuration Management.Configuration Management. Managing the network’s usage

user or group accounts user or group privileges user login scripts directory space

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TestingTesting Trouble DetectionTrouble Detection Trouble AnalysisTrouble Analysis

Trouble ResolutionTrouble Resolution Trouble LoggingTrouble Logging

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Fault ManagementFault Management

Fault management - preventing, detecting and correcting any faults in the network circuits, hardware, and software

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Failure ControlFailure Control Help desk function

human intervention problem reporting authority to call other support or vendors as

necessary problem tracking problem statistics troubleshooting chronic device failures

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Testing and Problem FixTesting and Problem Fix

Establish test and validity criteria Coordinate and administer the various tests Quick diagnoses Maintain a variety of testing equipment Document fix procedure Report on problem resolution time Record down time and network availability

statistics

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End User SupportEnd User Support Solving whatever problems users encounter

while using the network Resolving software problems

lack of user knowledge incompatibility between software packages

Security issues incorrect or forgotten passwords rights to directories

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End User SupportEnd User Support Several levels of support

help desk general problems 75 - 85% solved at this level

second level specialized skills

third level specialists who test and create solutions advanced problem solving

End User Training on going process

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Chapter 12Chapter 12





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Documents

Data Communications - Chapter twelve