CNGI QoS管理系統(tǒng)中策略管理的設計及實現(xiàn).pdf

1、北京郵電大學碩士學位論文CNGIQoS管理系統(tǒng)中策略管理的設計及實現(xiàn)姓名：張雨申請學位級別：碩士專業(yè)：計算機應用指導教師：王文東20080228北京郵電大學碩士學位論文(CNGIQoS管理系統(tǒng)中策略管理的設計及實現(xiàn)》唧DESIGNANDIN口LEMENljATIONOFPOLICYMANAGEM匣NTINCNGIQoSMANAGEMENTSYSTEMABSTRACTDifferentkindsofnewapplicationsgrowr

2、apidlyandthesenseofeverythingoverIPisacceptedbymoreandmorepeople，whichmaketheIPnetworkbecomeaunifiedplatformprovidingmulti—serviceHoweverIPcannotprovideQoSguaranteesformultimediaserviceswhicharesensitivetodelayjitterandp

3、acketlossforits“besteffort’transportnatureSo，howtoprovideQoSguaranteesonIPnetworkhasbecomethecrucialprobleminIntemetdevelopmentInaddition，withtheincreaseofnetworkmanagementcomplexityandtherequirementoftheQoSmanagement，th

4、etraditionalnetworkmanagementcallnotsolvetheseproblemswellSo，anewnetworkmanagementwayisbadlyneededtomeettheseproblemsaforementionedTheNationalDevelopmentandReformCommissionproject‘‘ResearchandImplementationonChinaNextGen

5、erationIntemetQoS’’aimsatdevisingacontrollable，manageableandoperatableunifiedIPQoSsystemsupportingIPv4／IPv6networksThepolicymanagementofthesystemusingpoliciestocontrolQoSmechanisms，resourceplanningandbillingistomaintaint

6、heconsistenceofdifferentequipment’Sbehaviors，whichmakesthesystemmoremanageableandoperatableFirstlyweanalyzedandcompared3mainIPQoSmodelsThesolutionusedinCNGIQoSsystemisalsodescribedThenweintroducedthepolicybasednetworkman

7、agementmodelwhichisproposedbyIETEafterwhich，weproposedapolicymanagementframeworkdependingonthePDP(PolicyDecisionPoint)TheframeworkcombinestheQoSmechanismandthepolicy—basednetworkmanagementtechnologiesandconvertstheQoSmec