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ThePPDIOOnetworklifecycle

AnarticlebyFabioSemperboni TUTORIAL

OneofthefirsttopicpresentedintheDesigningforCiscoInternetworkSolutions(DESGN)bookisaboutthenetworkdesignmethodology.Thismethodologyiscomposedbysixphasescloselyrelated:prepare,plan,design,implement,operate,optimize.

Asshowinthisfigure,thePPDIOOlifecyclephasesareseparate,yetcloselyrelated.

WhyusethePPDIOOmodel?

Loweringthetotalcostofnetworkownership:Companiestrytolowerthetotalcostofnetworkownershipwhiletheyaddnewtechnologiestoanexistingnetwork,procureequipment,trainstaff,managenetworkperformance,andmaintainthenetwork.

Improvingbusinessagility:Businessagilitycanbedescribedasanorganizationsabilitytorespondrapidlytochangingbusinessormarketconditionsandadapttothechangingdemandsofitscustomersandthebusinessenvironment.Inthelongterm,industryanalystGartnerwrites,perhapsthemostimportantroleforbusinessleadersistoidentifytheagendaforagilityandtopreparetheorganizationtofacethreats.

Speedingaccesstoapplicationsandservices:Speedingaccesstoapplicationsandserviceshelpsenablebusinessagility.Forexample,anIPCommunications

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6/17/2015 ThePPDIOOnetworklifecycle|CiscoZine

http://www.ciscozine.com/theppdioonetworklifecycle/ 2/4

systemcouldbeoutfittedwithacustomerrelationshipapplicationthatenablesincomingcallstoautomaticallytriggerthedisplayofcustomeraccountinformationandcontacthistory,providingstaffwiththeinformationtheyneedtorespondquicklyandeffectively.

Increasingavailability:Downtimecanadverselyaffectrevenueandcanreduceprofitabilitythroughcostsassociatedwiththenetworkstaffhavingtotroubleshootandfunctioninareactivemode.Highavailabilitydependsoncarefullyplannedredundancy,soundsecurity,andscalabilityandalsorequiresdiligencethroughoutthenetworklifecycle.Availabilitytargetsareinfluencedbybusinessgoals.Targetsareestablishedearlyinthenetworklifecycleandachievedthroughoutit:asmooth,wellplanneddeploymenthelpsminimizeriskofdowntime,andsoundplanningfordaytodayoperationshelpsspeedproblemresolution.

PPDIOOphases:

Preparephase:Businessagilitystartswithpreparation:anticipatingthebroadvision,requirements,andtechnologiesneededtobuildandsustainacompetitiveadvantage.Inthepreparephase,acompanydeterminesabusinesscaseandfinancialrationaletosupporttheadoptionofnewtechnology.Bycarefullyanticipatingfutureneedsanddevelopingbothatechnologystrategyandahighlevelarchitecturetomeetthoseneeds,abusinessisbetterequippedtocontaincostsduringdeploymentandoperations.

Planphase:Successfultechnologydeploymentdependsonanaccurateassessmentofacompanyscurrentnetwork,securitystate,andoverallreadinesstosupporttheproposedsolution.Intheplanphase,acompanyascertainswhetherithasadequateresourcestomanageatechnologydeploymentprojecttocompletion.Toevaluateandimprovenetworksecurity,acompanytestsitsnetworkforvulnerabilitytointrudersandoutsidenetworks.Thecompanythendevelopsadetailedprojectplantoidentifyresources,potentialdifficulties,individualresponsibilities,andcriticaltasksnecessarytodeliverthefinalprojectontimeandonbudget.

Designphase:Developingadetaileddesignisessentialtoreducingrisk,delays,andthetotalcostofnetworkdeployments.Adesignalignedwithbusinessgoalsandtechnicalrequirementscanimprovenetworkperformancewhilesupportinghighavailability,reliability,security,andscalability.Daytodayoperationsandnetworkmanagementprocessesneedtobeanticipated,and,whennecessary,customapplicationsarecreatedtointegratenewsystemsintoexistinginfrastructure.Thedesignphasecanalsoguideandacceleratesuccessfulimplementationwithaplantostage,configure,test,andvalidatenetworkoperations.

Implementphase:Anetworkisessentialtoanysuccessfulorganization,anditmustdelivervitalserviceswithoutdisruption.Intheimplementphase,acompanyworkstointegratedevicesandnewcapabilitiesinaccordancewiththedesignwithoutcompromisingnetworkavailabilityorperformance.Afteridentifyingandresolvingpotentialproblems,thecompanyattemptstospeedreturnoninvestmentwithanefficientmigrationandsuccessfulimplementationincludinginstalling,configuring,integrating,testing,andcommissioningallsystems.Afternetworkoperationisvalidated,anorganizationcanbeginexpandingandimprovingITstaffskillstofurtherincreaseproductivityandreducesystemdowntime.

Operatephase:NetworkoperationsrepresentasignificantportionofITbudgets,soitsimportanttobeabletoreduceoperatingexpenseswhilecontinuallyenhancingperformance.Throughouttheoperatephase,acompanyproactivelymonitorsthehealthandvitalsignsofthenetworktoimproveservicequalityreducedisruptionsmitigateoutagesandmaintainhighavailability,reliability,andsecurity.Byprovidinganefficientframeworkandoperationaltoolstorespondtoproblems,acompanycanavoidcostlydowntimeandbusinessinterruption.Expertoperationsalsoallowanorganizationtoaccommodateupgrades,moves,additions,andchangeswhileeffectivelyreducingoperatingcosts.

Optimizephase:Agoodbusinessneverstopslookingforacompetitiveadvantage.Thatiswhycontinuousimprovementisamainstayofthenetworklifecycle.Intheoptimizephase,acompanyiscontinuallylookingforwaystoachieveoperationalexcellencethroughimprovedperformance,expandedservices,andperiodicreassessmentsofnetworkvalue.Havebusinessgoalsortechnicalrequirementschanged?Isanewcapabilityorenhancedperformancerecommended?Asanorganizationlookstooptimizeitsnetworkandpreparestoadapttochangingneeds,thelifecyclebeginsanewcontinuallyevolvingthenetworkandimprovingresults.

References:

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Summary

ArticleName ThePPDIOOnetworklifecycle

Author FabioSemperboni

Description ThePPDIOOnetworklifecycleisaCiscomethodologycomposedbysixphasescloselyrelated:prepare,plan,design,implement,operate,optimize.Theselifecyclesdefineanapproachthatcanbefollowedforeachstageofthenetworkslife

http://www.cisco.com//ps6890/serv_category_home.html

http://www.cisco.com//services/lifecycle/index.html

Tags:Business,Design,PPDIOO