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Appendix B.  IPT Planning Phase: Network Infrastructure Analysis Questionnaire

Appendix B.  IPT Planning Phase: Network Infrastructure Analysis Questionnaire

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ThefollowingisanoutlineofthesectionsintheNetwork

InfrastructureAnalysisQuestionnaire:

CustomerBusinessandTechnicalExpectations

CompanyOverview

CompanyVision

3-to5-YearPlan

SolutionExpectations

ProjectExpectations

DeploymentTime-frame

FinancialExpectations

NetworkDesign

Hierarchy

Modularity

Layer2DesignCoreLayer

Layer2DesignDistributionLayer

Layer2DesignAccessLayer

Wide-AreaNetwork



WANDesignandHighAvailability

WANNetworkBaseline

WANCapacityPlanning

RoutedNetworkLayer3Design

IPAddressing

RoutingProtocol

IPHotStandbyRoutingProtocol

QualityofService

NetworkServices

DNS

DHCP

NTP

Directories

MessagingSystem

CablingandNetworkLinks

HardwareScalability

Software



PowerProtectionandEnvironmentalCondition

PowerProtection

EnvironmentalCondition

PowerCalculations

Security

Somesectionsmightnotbeapplicabletothenetworkthatyou

areplanning,soskipanysuchsections.



CustomerBusinessandTechnicalExpectations

Atthebeginningoftheplanningphase,youmustsummarize

thecustomer'sbusiness,techinicalexpectations,requirements,

andfuturegrowthplanstoaccommodatetheincreasing

demandsofthecustomerintermsofsupportingadditionalIP

phones,supportingnewfeatures,oraddingmoreapplications.



CompanyOverview

TableB-1providesthequestionsthatyoushouldaska

customertogetanoverviewofthecustomer'scompany.

TableB-1.CompanyOverview

No.



Question



1



Whatisthecustomername?



2



Brieflydescribethecustomer's

business.



3



Provideabriefoverviewofthe

servicesandapplicationsthatthe

customerisrunningonthe

network.



4



Identifywhetherthedeployment

isa"greenfield"(newnetwork)

opportunity.Ifitisnot,givea

briefoverviewofthecurrent

network.



Answer

















CompanyVision

Whatisthecompany'sproposedgoalsandexpectedgrowthin

thenext3to5years?



3-to5-YearPlan

Whatisthecompany's3-to5-yearplanforbothvoice

(telephony)anddatanetworks?



SolutionExpectations

Whatarethecompany'suppermanagementexpectationsand

requirementsforthecompletedsolution,includingservice

levels,features,andfunctionalities?



ProjectExpectations

Whatarethecompany'suppermanagementexpectationsand

requirementsregardingtheproject(timelines,priority

deploymentsites,successcriteria,costexpectations,andso

forth)?



DeploymentTimeframe

Theobjectiveofthissectionistocollectanswerstothe

followingquestions:

Whatexpectationsdoesthecustomerhaveforthe



deploymentoftheIPTsolution?

Whattimelinedoesthecustomerhaveforthedeployment

oftheIPTsolution?

Shouldyougiveanysites,departments,oruserspriorityfor

deployment?

UseTableB-2toprovidethetimelineanddescriptionofvarious

phases.

TableB-2.DeploymentTimelines

Target



Successfulrolloutof

IPTforentire

organization

Phase1



Phase2



Phase3



Addadditional

phasesasneeded



Start

Date



EndDate











































BriefDescription

ofthePhase

Marksthecomplete

IPTrolloutinthe

entireorganization

IncludesIPTrollout

atHeadquarters

IncludesIPTrollout

atbranchsites

Deployadditional

IPTapplications







Typically,large-scaledeploymentsdividethecompleteIPT

deploymentintosmallerphases.Forexample,Phase1mightbe

torolloutIPTtoagroupofuserswhoarelocatedat

Headquarters,Phase2mightbetorolloutIPTatsomebranch

sites,Phase3mightbetodeployadditionalIPTapplications,



andsoforth.YouneedtoexpandTableB-2andclearlyspecify

howyouwanttoprioritizethedeploymenttoachieveyourfinal

goalofconvertingyourcustomer'snetworktoend-to-endIPT.



FinancialExpectations

Whatarethecompany'suppermanagementexpectations

regardingthenewsolution'sreturnoninvestment(RoI)?



NetworkDesign

Thequestionsprovidedinthissectionwillhelpyoutogather

detailedinformationonthecustomer'snetworkinfrastructure.



Hierarchy

Networkhierarchyandmodularityareperhapsthetwomost

importantaspectsofnetworkdesign.Ahierarchicalnetworkis

easiertounderstandandeasiertosupportbecauseconsistent,

expecteddataflowsforallapplicationsoccuronthenetwork

oversimilaraccess,distribution,andbackbonelayers.This

reducestheoverallmanagementrequirementsofthenetwork,

increasesunderstandingandsupportabilityofthenetwork,and

oftenresultsindecreasedtraffic-flowproblems,congestion

issues,andtroubleshootingrequirements.Havinganetwork

hierarchyalsoimprovesthescalabilityofthenetworkby

allowingittogrowwithoutrequiringmajornetworkchanges.

Finally,ahierarchicalnetworkpromotesaddresssummarization,

whichisimportantinlargerIProutingenvironments.

TableB-3providesthequestionsthatyoushouldaska

customertounderstandifthenetworkdesignfollowsa

hierarchicalmodel.

TableB-3.NetworkDesignHierarchy

No.



Question



1



Doesthenetworkhaveseparatecore,

distribution,andaccesslayersthatare

appropriateforthenumberofcampususers?



Yes



Areusers,servers,andWANservicesconnected

totheaccesslayerforallcampusenvironments?



Yes



2



Answer



No



No

3



Ifadistributedcampusenvironmentexists,does

thenetworksupportahierarchicalandmodular

WANcorewithdefinedcore,distribution,and

accessconnectivity?



Yes

No



Notes/Comments

Inthissection,youneedtocollectthecustomer'sLAN

architecturediagramforallsitesthatrequiretheIPT

deployment.BasedontheanswerstothequestionsinTableB-3

andafterstudyingthenetworklayout,youneedtodocument

thestrengthsandweaknessesinthenetworkandprovidethe

recommendationstothecustomertomaketheinfrastructure

readytorunIPTforthisareaofthenetwork.



Modularity

Amodularnetworkusesconsistentnetworkmodulesforthe

access,core,anddistributionlayers.Usingaconsistent"model"

foreachlayerofthenetworkimprovesthesupportability

becauseitbecomesmucheasiertoproperlytestmodules,

createtroubleshootingprocedures,documentnetwork

components,trainsupportstaff,andquicklyreplacebroken

components.

TableB-4providesthequestionsthatyoushouldaska

customertounderstandifthenetworkisdesignedfollowingthe

modularapproachguidelines.

TableB-4.NetworkDesignModularity



No.



Question



1



Doesthenetworkhaveconsistenthardwareand

softwaremodulesdeployedfortheLANserver

anduseraccess?



Yes



Doesthenetworkhaveconsistenthardwareand

softwaremodulesdeployedfortheLAN

distributionandcorelayers?



Yes



Doesthenetworkhaveconsistenthardwareand

softwaremodulesdeployedforaccessand

distributionlayerWANservices?



Yes



2



3



Answer



No



No



No



Notes/Comments

Inthissection,youneedtoobtaininformationabouttherouter

andswitchhardwaredeployedatthecore,distribution,and

accesslayers.UseTableB-5togathertheinformation,which

willbehelpfullatertodothefollowing:

TableB-5.NetworkDesignHardwareListExample

Layer



Core



Vendor,

Product

Family

Cisco

Catalyst

6509



Installed

Modules



PartNumber



IOS/CatOS

Version

Number



1000BASE-X WS-X6K-SUP1A- CatOS8.1.

Supervisor

2GE

(3)

Multilayer

Switch

Feature



WS-F6K-MSFC2



12.1.20E2



WS-X6348-RJ-45



Multilayer

Switch

Feature

Distribution Cisco



1000BASE-X WS-X6K-SUP2-



CatOS8.1.



Catalyst

6509



Supervisor



2GE



(3)



Multilayer

Switch

Feature



WS-F6K-MSFC2



12.1.20E2



WS-X6348-RJ-45



10/100BASETX

Ethernet

Access



Cisco

Catalyst

3550



48inline

power

Ethernet



WS-C3550-48EMI



12.1.20-EA1



2Gigabit

Ethernet

ports



Determinewhethertheroutersandswitchesarecapableof

supportinginlinepower.

Determinewhethertheroutersandswitcheshavehardware

orsoftwarerevisionsorversionsthatarerequiredtorun

specificIPTfeatures.

Calculatethenumberofinlinepowermodulesrequiredto

providethepowertoIPphones.

Calculatethepowersupplyrequirementsformodular

switches.



Layer2DesignCoreLayer

Thissectionlooksatdesignandconfigurationconsiderationsfor

thecorelayerforlargercampusdeployments.Smaller

organizationsmighthavemoreofacollapsedmodel,withthe



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