I網(wǎng)絡(luò)工程系統(tǒng)應(yīng)用教育城域網(wǎng)設(shè)計A1A0A3A2A4A5A6A7A8A9A10A11A12A13A14A15A16A17A18A19A20A9A5A6A21A22A23A24A25A26A27A28A9A13A29A30A17A18A31A32A33A9A22A23A34A35A36A37A38A38A39A40A41A42A9A43A44A14A45A46A14A17A18A31A32A33A24A34A35A47A48A49A42A17A50A51A52A53A54A17A50A55A17A50A56A57A58A59A9A60A61A30A62A63A16A64A65A52A31A66A9A17A18A31A32A33A67A68A69A11A12A13A70A71A72A73A74A75A76A77A78A79A33A80A81A82A83A34A7A8A72A84A17A18A31A32A33A81A82A9A85A86A51A81A82A83A34A51A87A79A88A44A89A19A90A91A81A82A9A92A93A94A23A95A14A96A97A98A99A100A101A102A103A66A17A18A5A6A21A12A13A104A105A9A17A18A31A32A33A106A107A108A109A30A110A111A14A73A74A112A113A114A17A18A31A32A33A9A12A13A14A115A84A102A103A66A17A18A31A32A33A41A42A116A114A104A105A92A93A30A117A118A14A84A119A120A41A42A116A114A121A54A23A95A14A115A122A123A17A18A31A32A33A81A82A9A7A8A124A125A14A126A127A33A80A39A128A129A130A51A33A80A56A57A129A130A51A33A80A131A90A132A133A134A129A130A51A33A80A75A76A129A130A94A23A135A9A136A125A9A137A138A13A29A139A140A30A141A33A80A39A128A129A130A9A23A95A142A14A43A44A143A144A114A33A80A85A86A94A87A79A9A23A95A72A112A113A114A145A146A147A7A8A86A22A17A18A31A32A33A9A148A134A94A108A149A150A55A151A146A102A152A92A153A94A33A80A154A28A9A7A8A94A108A149A30A141A33A80A56A57A129A130A9A23A95A142A14A155A76A33A80A156A157A158A51A33A80A159A160A94A33A80A135A161A81A82A9A96A162A7A8A14A86A22A114A150A163A103A164A156A157A158A54A81A85A86A94A150A164A165A147A159A160A33A80A7A8A51A156A157A158A166A83A7A8A35A167A168A9A33A80A56A57A129A130A30A141A33A80A131A90A132A133A134A129A130A9A23A95A142A14A169A123A17A18A31A32A33A76A170A171A172A52A51A173A174A175A176A177A9A88A44A14A155A76A33A80A131A90A132A133A134A9A96A162A7A8A14A178A22A150A179A180A181A132A151A182A164A183A184A7A8A35A9A33A80A131A90A94A33A80A133A134A108A109A30A141A33A80A75A76A129A130A9A23A95A142A14A112A113A114A17A18A5A6A33A51A17A18A133A134A142A185A51A17A18A56A57A142A185A51A49A42A17A18A142A185A94A31A32A33A133A134A94A156A157A142A185A186A75A76A124A187A9A85A86A94A87A79A30A141A23A135A9A136A125A142A14A112A113A114A188A189A23A135A9A7A8A190A171A30A96A118A14A84A73A140A74A89A19A121A85A78A191A192A14A115A193A99A114A194A118A89A195A196A197A198A9A23A199A30A200A201A202A3教育城域網(wǎng)網(wǎng)絡(luò)存儲VPN教育信息遠程教育網(wǎng)絡(luò)安全。IINETWORKENGINEERINGAPPLICATIONSEMANDESIGNEDUCATIONABSTRACTWITHTHERAPIDDEVELOPMENTOFINFORMATIONTECHNOLOGY,EDUCATIONINCHINASINFORMATIONINDUSTRYISALSOMOREINDEPTHSTART,MANEDUCATIONISTHEFOCUSOFTHE“XIAOXIAOTONG“PROJECT,ATTHESAMETIME,EDUCATIONHASBECOMEMANACHIEVEDISTANCELEARNING,MULTIMEDIATEACHINGANDLEARNINGRESOURCESTOSHARETHEKEY,MANYCITIESNOWMANEDUCATIONHASDEVELOPEDRAPIDLY,INTHISPAPER,HIGHPERFORMANCENETWORKSYSTEMSINTEGRATIONTECHNOLOGY,MANEDUCATIONSYSTEMTOTHESTRUCTURE,SYSTEMSINTEGRATION,FEATURESACOMPREHENSIVESYSTEMSANALYSISANDDESIGN,WITHTHEFINALDRAW/MUNICIPALEDUCATIONINFORMATIONDEVELOPMENTNEEDSOFEDUCATIONMANSOLUTIONFIRSTOFALL,THISPAPER,THEDEVELOPMENTOFEDUCATIONMAN,AND/MUNICIPALENGINEERINGEDUCATIONMANDONEANEEDSANALYSISTHEN,ONTHEWHOLEPROJECTDONEADESIGN,BASEDONEDUCATIONMANSYSTEMANDTECHNICALMODEL,ACCORDINGTONETWORKCOMMUNICATIONSPLATFORM,PLATFORMNETWORKRESOURCES,NETWORKSECURITYANDMANAGEMENTPLATFORMS,NETWORKAPPLICATIONPLATFORMANDEQUIPMENTTODISCUSSTHEORDEROFSELECTIONINTHEDESIGNOFNETWORKCOMMUNICATIONSPLATFORM,FOCUSONDETERMININGTHESTRUCTUREANDFUNCTIONOFNETWORKDESIGN,CONSTRUCTIONONTHEVPNTECHNOLOGYEDUCATIONMANPRINCIPLESANDMETHODSOFDISTRIBUTIONANDIPADDRESSESANDNETWORKACCESSTECHNOLOGYANDMETHODSINTHEDESIGNOFNETWORKRESOURCESPLATFORM,USEOFNETWORKSERVERS,NETWORKSTORAGEANDBACKUPSYSTEMSTOTHELATESTNETWORKTECHNOLOGY,CONSTRUCTIONOFAB/SSERVERARCHITECTUREANDSANSTORAGENETWORKINGTECHNOLOGY,SERVERCLUSTERINGTECHNOLOGYBASEDPLATFORMFORNETWORKRESOURCESINTHEDESIGNOFNETWORKSECURITYANDMANAGEMENTPLATFORM,ACCORDINGTOTHEMANNUMBEROFUSERS,COVERAGEOFTHEMAJORCHARACTERISTICSOFNETWORKSECURITYANDMANAGEMENTUSETHELATESTTECHNOLOGYTOCREATEAFIREWALLANDIDSTECHNOLOGYLINKEDTOTHENETWORKSECURITYANDNETWORKMANAGEMENTSOLUTIONSINTHEDESIGNOFNETWORKAPPLICATIONPLATFORM,ONTHEEDUCATIONINFORMATIONNETWORK,THEMANAGEMENTCENTER,EDUCATIONRESOURCECENTRE,TELEEDUCATIONCENTRESANDMANMANAGEMENTANDSERVICECENTREAPPLICATIONMODULESSUCHASTHESTRUCTUREANDFUNCTIONSELECTIONOFTHEEQUIPMENT,INTRODUCEDTHEMAINEQUIPMENTOFTHETECHNICALPARAMETERSFINALLY,THESUMMARYOFTHISPAPER,ANDTOPUTFORWARDTHEIDEAOFTHEFUTURETOFURTHERIMPROVEMANEDUCATION,NETWORKSTORAGE,VPN,EDUCATION,DISTANCEEDUCATION,NETWORKSECURITYKEYWORDSMANEDUCATION,NETWORKSTORAGE,VPN,EDUCATIONINFORMATION,DISTANCEEDUCATION,NETWORKSECURITYIII目錄1緒論1A203A204A203A205A2061A203A204A207A208A209A210A211A2121A203A204A213A209A214A215A2162A203A204A217A218A219A215A21632網(wǎng)絡(luò)總體設(shè)計3A207A204A203A218A219A220A2213A207A204A207A222A223A224A225A226A227A218A21943網(wǎng)絡(luò)通信平臺的設(shè)計5A213A204A203A228A229A230A231A222A232A2335311連接方式5312VPN技術(shù)5313IP地址分配6314教育城域網(wǎng)接入INTERNET6A213A204A207A228A229A234A235A236A234A231A2227321綜合布線設(shè)計7322局域網(wǎng)VLAN的劃分8323局域網(wǎng)接入INTERNET9324無線局域網(wǎng)94網(wǎng)絡(luò)資源平臺的設(shè)計10A217A204A203A222A223A237A238A239A240A218A21910411網(wǎng)絡(luò)服務(wù)器技術(shù)10412教育城域網(wǎng)服務(wù)器結(jié)構(gòu)設(shè)計11A217A204A207A222A223A241A242A243A244A218A21912421網(wǎng)絡(luò)存儲技術(shù)12A217A204A213A228A229A230A231A222A241A242A243A244A218A219135網(wǎng)絡(luò)安全與管理平臺的設(shè)計14A245A204A203A222A223A246A247A248A24914511主要的網(wǎng)絡(luò)安全問題14512網(wǎng)絡(luò)安全策略15A245A204A207A228A229A230A231A222A246A247A243A244A218A21916521教育城域網(wǎng)系統(tǒng)采用的安全措施16522地/市教育城域網(wǎng)安全系統(tǒng)設(shè)計17A245A204A213A222A223A250A251A248A24918531網(wǎng)絡(luò)管理的功能18532網(wǎng)絡(luò)管理的模式18A245A204A217A222A223A250A251A243A244A218A21919541地/市教育城域網(wǎng)網(wǎng)絡(luò)管理模式19542地/市教育城域網(wǎng)用戶認證和計費系統(tǒng)206網(wǎng)絡(luò)應(yīng)用平臺的設(shè)計21IVA252A204A203A228A229A253A254A22221A252A204A207A228A229A250A251A255A2622621教育行政辦公系統(tǒng)22622教育教學(xué)管理系統(tǒng)22623基礎(chǔ)教育信息統(tǒng)計系統(tǒng)23A252A204A213A228A229A0A1A255A26A240A2A323631優(yōu)秀教案庫23632CAI課件素材庫23633題庫24634數(shù)字圖書館24A252A204A217A59A4A228A229A255A2624641遠程教育系統(tǒng)的類型24642地/市教育城域網(wǎng)遠程教育模式257教育城域網(wǎng)網(wǎng)絡(luò)設(shè)備的選型26A61A204A203A222A223A218A20A5A6A220A22126711影響交換機選擇的因素26712核心交換機選購原則26713核心交換機主要參數(shù)27714路由器的選擇29715防火墻和IDS的選擇29716G994G1975G1390G1320G418330A61A204A207A222A223A218A20A5A6A7A830721交換機30722路由器34723防火墻35724入G2995G1983G1033系統(tǒng)36A61A204A213A237A238A239A5A637731G4087件選型37732G3112件選型388總結(jié)489致謝語5010參考文獻5111緒論11背景教育城域網(wǎng)在國內(nèi)的發(fā)展已經(jīng)有四年之久。教育城域網(wǎng)最早在1999年出現(xiàn)，那時教育部關(guān)于在中小學(xué)實施“校校通”工程的通知還沒有頒布，對多數(shù)教育行業(yè)人士來說“教育城域網(wǎng)”還是個新名詞。2000年，城域教育網(wǎng)開始在國內(nèi)部分發(fā)達地區(qū)破土而出；2001年，教育城域網(wǎng)進入高速發(fā)展期；到2002年，國內(nèi)出現(xiàn)了數(shù)以百計的教育城域網(wǎng)，其中大部分是經(jīng)濟中等以上發(fā)達程度地區(qū)興建的，以北京、上海、深圳等為代表的發(fā)達地區(qū)則加大教育城域網(wǎng)的覆蓋面，比如在2002年上海的教育城域網(wǎng)就覆蓋了80以上的地區(qū)。教育城域網(wǎng)的建G16786是G6524進G13044G17148教育、G17826G6521知G16794經(jīng)濟時代的G19668G16213。G11458G2081G1002G11040G2520國G18129在加G5567教育現(xiàn)代G2282的G8505G1252，其信息G2282程度的高G1314G1075已G6116為G5415G1182G1002G11040G15925G18339G980個國G4490G13520G2524國G2159的G18337G16213G7643G5547。G19555G11540“校校通”工程的G5567速G6524進，教育信息G2282G5224G11004的G993G7041深入，G17855G2011G19668G16213建G12447G980個地區(qū)G5627的教育G17176G9316G5223G2656教育G12661G10714信息G13007G13491。G312作用和目標(biāo)教育城域網(wǎng)是學(xué)校信息G2282建G16786的關(guān)G19202，G4439的G1328G11004G1319現(xiàn)在如G991G1972個G7053面G726G3G31G12教育城域網(wǎng)G14033G1431進G2520校教G5084G2656學(xué)G10995G4625G5567G6564高G5224G11004信息G6228G7427的G8712G5191。信息G6228G7427是G980G19388G993G7041發(fā)展的G5224G11004G3423學(xué)G12197，為了G16765學(xué)G10995G6496G6581G7368加實G11004的信息G6228G7427，G5529G20047G13485G1194G1216G6564G1391G980個信息G2282的G10627G3671，教育城域網(wǎng)是G6564G1391信息G2282G10627G3671的G3534G11796。G3G32G12教育城域網(wǎng)為教G5084G6564G1391了G980G12193G1820進的G17753G2173教學(xué)工G1867、G6564G1391了G1028G4512的教學(xué)G17176G9316G5223，教育城域網(wǎng)是學(xué)校進行教學(xué)G1319G2058G6925G19773、G6524行G13044G17148教育G980G12193G5529G993G2499G4581的工G1867。G33G12教育城域網(wǎng)G6564G1391了G2520校G1144G8981的G7737G7765，通G17819教育城域網(wǎng)G994教育網(wǎng)以G2462G1126G13864網(wǎng)的G17842G6521，實現(xiàn)了教育G17176G9316的最大G1861G1151G2656信息的最G5567G14731G2474。G3地G18G5078教育城域網(wǎng)是為實現(xiàn)地G18G5078G2520校G994G5078教育G4628G11468G13864，G5194通G17819G5078教育G4628網(wǎng)絡(luò)中G5527G6521入G11477教育城域網(wǎng)，在G5078教育G4628信息中G5527建G12447網(wǎng)絡(luò)G17176G9316G5191G2500，G16765G2520個教育G7438G7512G1126G11468G6564G1391教學(xué)G17176G9316G1861G1151，遠程教育，G16282G20069點播。使項G11458有利于學(xué)G10995進行網(wǎng)絡(luò)協(xié)G1328式G2656探究式學(xué)習(xí)，為教G5084，學(xué)G10995G6564G1391全G7053位的G17176G9316服務(wù)，分為面向教G5084教學(xué)教研、面向?qū)WG10995學(xué)習(xí)、面向使G11004者個人G5224G11004、面向G5084G10995公G1861G5224G11004四大中G5527。其對學(xué)校教務(wù)G2656教學(xué)活動進行G13520G2524G12661G10714，是G980個學(xué)校G2656地區(qū)教育信息G2282的G3534G11796信息G5191G2500，G1867有良好的開放G5627、擴展G5627、安全G5627、高效G5627。G3213用戶需求1G12實G11004G5627G3由于G2520學(xué)校的規(guī)模、辦學(xué)層次G2656所G19668G16213的服務(wù)G993G4625G11468同，因此G11004戶的類別G1075比較復(fù)雜。同時地G18G5078教育信息中G5527是全G5078的教育信息中G5527、教育G12661G10714中G5527、教育G17176G9316中G5527G2656城域網(wǎng)G12661G10714中G5527，數(shù)據(jù)G18339大、數(shù)據(jù)結(jié)G7512比較復(fù)雜。特別是教育G17176G9316G5223擁有大G18339的多媒G1319教育教學(xué)G17176G9316，容G18339G2499達G1972百G甚至上千G，G5194且這些數(shù)據(jù)還經(jīng)常G19668G16213補充G2656完善。所以本G13007G13491在G16213充分滿足G993同學(xué)校G5224G11004G19668求的G2081G6564G991，G5224采G11004G1820進的、G6116熟的、實G11004G5627強的G6228G7427G2656產(chǎn)品，但始終G16213G1319現(xiàn)精打細算、勤儉節(jié)約的精神，G993盲G11458的追求G16786備的高檔、G6228G7427的超G2081，G993貪大求全，G993搞花架子。以免造G6116G993G5529G16213的G17176金浪費，從而使G13007G13491G1867有較強的實G11004G5627。G6564G1391常規(guī)的WWW、EMAIL、FTP、數(shù)據(jù)G5223服務(wù)，包括教育信息G12661G10714G13007G13491、學(xué)校信息G12661G10714G13007G13491、教育G17176G9316G5223、信息發(fā)布G13007G13491、G16282G20069點播、備課G13007G13491等G2520G12193教育行業(yè)G5224G11004G13007G13491。以滿足網(wǎng)絡(luò)易維護、易G12661G10714，G2499實施G5627的G16213求。G32G12G2499靠G5627G994有效G5627G3網(wǎng)絡(luò)G13007G13491G1328為其G1194G5224G11004G13007G13491的G3534G11796，如發(fā)G10995G13007G13491癱瘓，其造G6116的損失是難以估G18339的，特別是對于遠程教學(xué)，G980旦網(wǎng)絡(luò)出了問題，那勢G5529影響教學(xué)進度，因此G13007G13491G5529G20047G2499靠地G17842續(xù)運行，即G13007G13491G16786計G5529G20047從G13007G13491結(jié)G7512、G16786計G7053案、G16786備選G6333、G2390G2842的G6228G7427服務(wù)G994維G1474響G5224G14033G2159、G16786備備G1226G1391G5224G14033G2159等G7053面G13783G15397，使G6937G19568發(fā)G10995的G2499G14033G5627G4625G2499G14033G4581，影響面G4625G2499G14033小。G33G12G2499擴展G5627G3教育城域網(wǎng)建G16786是G980個分G19466G8585的G19283期G17819程，而且由于計算G7438G2656通信G6228G7427的G993G7041發(fā)展，G11004戶的G19668求G1075在G19555G11540時G19400的G6524G12239G993G7041的發(fā)G10995G2476G2282，以G2462由于G5224G11004G17731G1226G12193類G2656業(yè)務(wù)數(shù)G18339的G3698加，G2163G14033的強G2282，G13007G13491G17731G1226的G2331G13435G4570對G1039G7438G2656網(wǎng)絡(luò)G13007G13491G6564出G7368高的G16213求，G8861G5042G5078教育城域網(wǎng)的G7512造G5224G1867有高度的擴展G5627，以G19489G1314G13007G13491擴充的G6249入G6116本，G5194滿足信息G6228G7427高速發(fā)展的G19668G16213。G14033G17878G522423年內(nèi)的業(yè)務(wù)G3698G19283G2656G12373發(fā)G5627G1119G1226的G19668G16213，G11842G1457G2520G13435G13007G13491的G2499擴充G5627G2656G1820進G5627，G5194G8892G5859G16786備的G1899G1325G16786計以G2462網(wǎng)絡(luò)的G17139G17745G3355G15925。G34G12安全G5627G3教育城域網(wǎng)G6521入G11004戶多，而且雜，使G5483G21669G4470有G7438G2499G1068，G2499G14033出現(xiàn)G39G39G50G54G6927G1999，存儲G16786備破G3363，服務(wù)G3132G15999G19762G8873G2356據(jù)，G17176G9316G3818G8856以至造G6116G6984個網(wǎng)絡(luò)中G7041，因此教育城域的信息安全G11468對G4628域網(wǎng)來說就G7368G18337G16213，維護G7368復(fù)雜，網(wǎng)絡(luò)G13007G13491G993但G16213G14033G3827實現(xiàn)G2163G14033，G7368G18337G16213的是G16213G12295G4462安全，G2554則，G1262影響G8503常的教學(xué)活動的開展。G3314設(shè)計需求1G5078教育G4628網(wǎng)絡(luò)中G5527G16213實現(xiàn)上G991G994G11477教育G4628網(wǎng)絡(luò)中G5527以G2462G2520G2451G5078教育G4628網(wǎng)絡(luò)中G5527G11468G17842，G5050G2503G994區(qū)教育G4628G2462G2520G5078G13435學(xué)校G11468G17842。2教育城域網(wǎng)是為了G6564G1391遠程教學(xué)，G16282G20069點播，使G11004FTP協(xié)G16770G16765G2520教育G7438G7512G17176G9316G1861G1151,采G11004B/S模式發(fā)布通知，公G2590，新G19407。3由于教育城域網(wǎng)規(guī)模較大，網(wǎng)絡(luò)G17842G6521復(fù)雜，G7092G8873對網(wǎng)絡(luò)G16787問實施有效G11429G6523，網(wǎng)絡(luò)結(jié)G7512G2476G2282G7092G8873G6523G2058，G7092G8873了G16311網(wǎng)絡(luò)的G9443G8946G2656G2499G14033發(fā)G10995的G6927G1999。因此網(wǎng)絡(luò)建G6116G2530，G5224G16825G2058G4462完善的網(wǎng)絡(luò)安全G2656網(wǎng)絡(luò)G12661G10714G12586G11065，采G11004強有G2159的工G1867來G5122G2173網(wǎng)絡(luò)G12661G10714者對網(wǎng)絡(luò)G20130G19517進行G4470G16278的G16792估，G2462時發(fā)現(xiàn)網(wǎng)絡(luò)中的安全G19556G5751，G5194G6564出G2011實G2499行的G19462G14551G6526施G726充分利G11004G1144G6454G7438的G1144G6454G17347由G2163G14033，G2520教育G7438G7512內(nèi)部G7693據(jù)業(yè)務(wù)G12661G10714G19668G16213G2022分VG47G36N，G9994G2530通G17819NG36TG6228G7427G6521入教育城域網(wǎng)中G3G19462G9791G3693G994G44G39G54G13864動G6228G7427G3G15406G6323G999G11004網(wǎng)絡(luò)G708VPNG709G6228G7427G3G11161G8614G19462G8847G6228G7427使G11004G54TG36G53VG44EW進行實時G11429G65232網(wǎng)絡(luò)總體設(shè)計21設(shè)計原則城域網(wǎng)G16786計G2419則G726教育城域網(wǎng)的建G16786，G1039G16213G11458的是G4570同G980地區(qū)、同G980個城G5078G18336的所有學(xué)校、研究G7438G7512、本地的教育G7438G7512G1126G13864G17227來。為實現(xiàn)教育網(wǎng)絡(luò)高G17148、高效G1126G13864的G11458G7643G16213求，在網(wǎng)絡(luò)G16786計G7512建中，G5224始終G3374G6357以G991建網(wǎng)G2419則G726高安全、高G5627G14033、高G2499靠G5627高G17148高效的網(wǎng)絡(luò)G5627G14033是G6984個網(wǎng)絡(luò)良好運行的G3534G11796，因此，在G16786計中就G5529G20047G1457G19568網(wǎng)絡(luò)G2462G16786備的高G2546G2532G14033G2159，G2058G16758G13491G980的網(wǎng)絡(luò)安全G12586G11065，G6984G1319G13783G15397網(wǎng)絡(luò)G5191G2500的安全G5627。網(wǎng)絡(luò)G13007G13491的G12295G4462G2499靠是G5224G11004G13007G13491G8503常運行的關(guān)G19202G1457G16789，在網(wǎng)絡(luò)G16786計中選G11004高G2499靠G5627網(wǎng)絡(luò)產(chǎn)品，G16786備充分G13783G15397G1899G1325、容G19181G14033G2159G2656備G1233，同時G2524G10714G16786計網(wǎng)絡(luò)架G7512，G2058G4462G2499靠的網(wǎng)絡(luò)備G1233G12586G11065，G1457G16789網(wǎng)絡(luò)G1867有G6937G19568G14270G5852的G14033G2159，最大G19492度地G6915G6357G13007G13491的G8503常運行。G1039G5190網(wǎng)絡(luò)G16786備的G1039G16213部G1226G5529G20047G6915G6357G5114G11017G9921插拔，在萬G980出現(xiàn)G4628部G6937G19568時G5224G993影響網(wǎng)絡(luò)其G1194部分的運行，G5194且G6937G19568便于診G7041G2656排除，充分G1319現(xiàn)計算G7438網(wǎng)絡(luò)的高G2499靠G5627。4G2499運營、G2499G12661G10714、G2499G3698值對網(wǎng)絡(luò)實行集中G11429測、分權(quán)G12661G10714，G5194G13491G980分配G5114寬G17176G9316。選G11004G1820進的網(wǎng)絡(luò)G12661G10714G5191G2500，G1867有對G16786備、端口等的G12661G10714、G8981G18339G13491計分析，G2462G2499G6564G1391G6937G19568G14270動報警。G16213G1867有良好的業(yè)務(wù)G12661G10714G14033G2159、G6915G6357對寬G5114G11004戶的G6521入G12661G10714、身G1233認G16789、G5114寬許G2499、地址G12661G10714G2656服務(wù)G17148G18339G1457G16789G708QOSG709，G5194針對G993同的業(yè)務(wù)G6564G1391靈活的計費G7053式，G11842G1457網(wǎng)絡(luò)的G2499運營特G5627。G16213充分G13783G15397業(yè)務(wù)的擴展G14033G2159，針對G11004戶G19668求G6564G1391G1028G4512的寬G5114G3698值業(yè)務(wù)，使網(wǎng)絡(luò)G2499G6357續(xù)發(fā)展G994贏利。開放G5627、兼容G5627、G2499擴展G5627G6915G6357國際上通G11004G7643準(zhǔn)的網(wǎng)絡(luò)協(xié)G16770、國際G7643準(zhǔn)的大G3423的動態(tài)G17347由協(xié)G16770等開放協(xié)G16770，有利于以G1457G16789G994其G4439網(wǎng)絡(luò)如中國教育網(wǎng)、公G1861數(shù)據(jù)網(wǎng)、學(xué)校之G19400等其G4439網(wǎng)絡(luò)G12之G19400的G5191滑G17842G6521G1126通，以G2462G4570來網(wǎng)絡(luò)的擴展。G322網(wǎng)絡(luò)拓撲結(jié)構(gòu)設(shè)計本G16311決G7053案充分結(jié)G2524我國城G5078G5078區(qū)教育行業(yè)G11004戶的網(wǎng)絡(luò)現(xiàn)狀。以地G18G5078教委、G11017教館網(wǎng)絡(luò)為中G5527，中G5527G1144G6454G7438采G11004銳捷G53GG546800產(chǎn)品G1328為網(wǎng)絡(luò)的核G5527G16786備，G6984個教育城域網(wǎng)骨G5190采G11004銳捷網(wǎng)絡(luò)3G2500G53GG546800通G17819萬兆G6521口做G10627備G1233，通G17819GE鏈G17347集中來G14270學(xué)校G54TG36G53G54355012G54FPG18GT，G54TG36G53G544909的上行數(shù)據(jù)，多節(jié)點G10627網(wǎng)G1039G16213G5224G11004于建G12447G1314G6116本高G5627G14033的G44P城域網(wǎng)，G1328為城域網(wǎng)中G44P業(yè)務(wù)的承G17745網(wǎng)絡(luò)，由于其G1867有較好的QG50G54特G5627G2656G5114寬G1457G16789，因此G1075G2499G5224G11004于G6521入網(wǎng)G2656VPN業(yè)務(wù)。G3A91A10A11A12A13A14A15A953網(wǎng)絡(luò)通信平臺的設(shè)計網(wǎng)絡(luò)通信G5191G2500是教育城域網(wǎng)最G18337G16213的網(wǎng)絡(luò)G3534G11796G16786施，其G2163G14033是實現(xiàn)網(wǎng)絡(luò)端到端的物G10714G17842G6521。地G18G5078教育城域網(wǎng)的網(wǎng)絡(luò)通信G5191G2500由教育城域網(wǎng)G5191G2500、G5078教育G4628G7438關(guān)G4628域網(wǎng)、學(xué)校校園網(wǎng)G2656G5078教育信息中G5527等組G6116。G331教育城域網(wǎng)平臺311連接方式G3城域網(wǎng)G17842G6521有兩G12193模式G726G980G12193模式是由G11017信公司G4570光纜鋪到轄區(qū)G2520所學(xué)校G2656教育G7438G7512，所有的學(xué)校通G17819光纜G6521入教育城域網(wǎng)，通G17819G16787問信息中G5527的服務(wù)G3132來G14731G2474信息。這G12193G7053式因為G6249G17176大，但G5627G14033優(yōu)；另G980G12193模式是“G15406G6323教育城域網(wǎng)”，即G5194G993建G16786物G10714上獨G12447存在的城域網(wǎng)，而是通G17819租G11004G11017信G999線，轄區(qū)的學(xué)校有條G1226的以光纖G6521入，沒有條G1226的采G11004ADSLG6521入網(wǎng)絡(luò)中，從而G7512G6116G980個運行在G11017信公網(wǎng)G3534G11796之上的G15406G6323教育城域網(wǎng)。這G12193模式特別G17878G2524G17176金缺口大的地區(qū)使G11004，雖G9994G5114寬G1314、安全G5627差G980些，但是仍G993失為加速教育信息G2282的G980G12193好G7053G8873。本G7053案采G11004兩G12193模式混G2524G7053式G726距離比較近的G5078區(qū)學(xué)校G2462教育G7438G7512采G11004第G980G12193模式G17753G16786千兆光纜到G2520個G5078G13435學(xué)校G2656區(qū)教育G4628，距離較遠的G11477教育廳G2656G2451G708G5078G709教育G4628采G11004第二模式通G17819租G11004G11017信DDNG999線G11468G13864，個人G11004戶G2499以G11004ADSL、G7092線G6521入G7053式G6521入。A92A16A17A18A19A12A21A22A23A24A9312VPN技術(shù)G3VPNG708VIRTUALG3PRIVATEG3NETWORKG709G15406G6323G999G11004網(wǎng)絡(luò)，G4439是利G11004公G1861網(wǎng)絡(luò)G3534G11796G16786施通G17819加密、隧道等G6228G7427手G8585而G7512建的G999G11004網(wǎng)絡(luò)。G994傳G13491的G999網(wǎng)G11468比，VPN有以G991G1039G162136優(yōu)點G726G3G1314G6116本G726G11004戶G993G5529租G11004G999線建G16786G999網(wǎng)，節(jié)G11477大G18339的網(wǎng)絡(luò)維護人員；G3容易擴展G726網(wǎng)絡(luò)G17347由G16786備配置簡單，G7092G19668G3698加太多的G16786備；G3完全G6523G2058G1039動權(quán)G726VPN上的G16786施G2656服務(wù)G2499由企業(yè)G14270行G16786G4462；G3覆蓋G14551圍大G726G14033G3827G6521入G44NTERNET的地G7053，G18129G2499以實現(xiàn)VPN；G3安全G5627較高G726通G17819G2520G12193安全G6228G7427的使G11004，VPNG1867有G994傳G13491G999網(wǎng)G11468同的安全G5627。G3G19555G11540VPNG6228G7427的G993G7041發(fā)展，VPNG16786備的價格G993G7041G19489G1314，VPNG6228G7427已廣泛G11004于教育城域網(wǎng)G13007G13491的建G16786之中。G31G12G5078教育G4628信息中G5527、區(qū)教育信息中G5527以G2462G5078G13435學(xué)校，通G17819G17753G16786光纜G11468G17842，運G11004VPNG6228G7427，組G6116海口G5078教育城域網(wǎng)G13007G13491的內(nèi)部G999網(wǎng)G708G44NTRANETG3VPNG709；G32G12小規(guī)模學(xué)校、G4490庭G11004戶、個人G11004戶以G2462G12239動G11004戶采G11004G16787問VPNG6228G7427，G16787問教育城域網(wǎng)；G33G12運G11004EXTRANETG3VPNG6228G7427，G2499實現(xiàn)地G18G5078教育城域網(wǎng)G994G11477教育廳信息中G5527G2462G11477屬高校校園網(wǎng)之G19400的G17842G6521。G19555G11540區(qū)域G19400的教育G1144G8981G994G2524G1328的G993G7041G3698多，G2520地區(qū)教育城域網(wǎng)的G17842G6521G6116為G980G12193潛在的G19668求。使G11004EXTRANETG3VPNG6228G7427，還G2499以實現(xiàn)G994其G1194地區(qū)教育城域網(wǎng)的G17842G6521，G5194且G993受區(qū)域G19492G2058。G3313IP地址分配G3G44P地址的G2524G10714分配，是G1457G16789網(wǎng)絡(luò)順利運行G2656網(wǎng)絡(luò)G17176G9316有效利G11004的關(guān)G19202。為了便于教育城域網(wǎng)的G12661G10714，教育城域網(wǎng)內(nèi)的G11004戶由網(wǎng)G12661中G5527G13491G980分配G2656G12661G10714網(wǎng)內(nèi)G11004戶的G44P地址。G3G44P地址分配G5224遵循以G991G2419則G726G3G44P地址規(guī)G2022G5224G16825G13783G15397教育城域網(wǎng)業(yè)務(wù)的發(fā)展G19668G16213，既G16213滿足G5415G2081業(yè)務(wù)對G44P地址的G19668G16213，又G16213充分G13783G15397未來業(yè)務(wù)的發(fā)展，預(yù)留G11468G5224的地址空G19400；G44P地址的分配G5224G16825G4625G2499G14033地利G11004申請到的地址空G19400，充分G13783G15397地址空G19400的G2524G10714G5627，G1457G16789實現(xiàn)最佳的網(wǎng)絡(luò)內(nèi)地址分配G2462業(yè)務(wù)G8981G18339的G3355勻分布；G44P地址的分配G5224G14033滿足G11004戶G2520G12193業(yè)務(wù)G19668G16213，按照G11004戶業(yè)務(wù)G18339的大小進行分配，G1457G16789G11004戶業(yè)務(wù)G708如WEB服務(wù)、G6521入服務(wù)以G2462郵G1226服務(wù)G709的G19668G16213。G3314教育城域網(wǎng)接入INTERNETG3教育城域網(wǎng)G11004戶，除了G1861G1151教育城域網(wǎng)內(nèi)部G17176G9316、實現(xiàn)內(nèi)部通信G3818，還經(jīng)常G19668G16213G994G44NTERNET實現(xiàn)G17842G6521，進行網(wǎng)頁瀏覽、G17176G9316G991G17745、G11017子郵G1226以G2462發(fā)布網(wǎng)頁等活動。7如果G993對網(wǎng)內(nèi)G11004戶G17842G6521G44NTERNET進行有效的G12661G10714，勢G5529G1262G13485G6984個教育城域網(wǎng)G13007G13491G5114來安全G19556G5751。G3為了G7053便教育城域網(wǎng)的G12661G10714，G6564高教育城域網(wǎng)的G6984G1319安全G5627G14033。網(wǎng)內(nèi)G11004戶的G44P地址由教育城域網(wǎng)G12661G10714中G5527G13491G980分配G2656G12661G10714，G4439G1216使G11004教育城域網(wǎng)G12661G10714中G5527G6564G1391的G44NTERNET出口，G1861G1151網(wǎng)絡(luò)中G5527G6564G1391的G19462G9791G3693G2656G44G39G54等安全G16786備。G3教育城域網(wǎng)G13007G13491的G11004戶分別按照以G991的途G5464G6521入G44NTERNETG726G3G31G5078教育G4628G7438關(guān)G4628域網(wǎng)、G5078G13435學(xué)校校園網(wǎng)G2656G5078教育信息中G5527服務(wù)G3132，通G17819G2520G14270的G17347由G8731集到教育城域網(wǎng)網(wǎng)G12661中G5527；2區(qū)教育G4628G7438關(guān)G4628域網(wǎng)、區(qū)屬學(xué)校校園網(wǎng)，通G17819區(qū)教育信息中G5527G17347由G3132G8731集到教育城域網(wǎng)網(wǎng)G12661中G5527；3小規(guī)模學(xué)校、G4490庭、個人G2656G12239動G11004戶，通G17819G6332G2507G17347由G3132G8731集到教育城域網(wǎng)網(wǎng)G12661中G5527；4教育城域網(wǎng)的所有G11004戶G8731集到網(wǎng)G12661中G5527G2530，G1889通G17819教育城域網(wǎng)的出口線G17347G6521入INTERNET，如G3282G980所G12046。32教育局機關(guān)局域網(wǎng)地G18G5078教育G4628G2462所屬的教育G12197研G7438G7512是地G18G5078G3534G11796教育G13007G13491的G6363G6393中G5527、G12661G10714中G5527、信息中G5527G2656服務(wù)中G5527，是海口G5078教育城域網(wǎng)G13007G13491的核G5527節(jié)點。建G16786G5078教育