HC VIN CNG NGH BU CHNH VIN THNG---------------------------------------

NGUYN NG HN

NGHIN CU GII PHP CNG NGH TRUYNTI D LIU IP TRN QUANG V NG DNG CHO

MNG NG TRC CA VNPT

Chuyn ngnh: Truyn d liu v mng my tnhM s: 60.48.15

TM TT LUN VN THC S

H NI - 2012

Lun vn c hon thnh ti:

HC VIN CNG NGH BU CHNH VIN THNG

Ngi hng dn khoa hc: TS. HONG VN V

Phn bin 1:

Phn bin 2:

Lun vn s c bo v trc Hi ng chm lun vn thc s ti Hc vin

Cng ngh Bu chnh Vin thng

Vo lc: ....... gi ....... ngy ....... thng 10 nm 2012

C th tm hiu lun vn ti:

- Th vin ca Hc vin Cng ngh Bu chnh Vin thng

1M U

Ngy nay, th gii ang bc sang k nguyn cann kinh t tri thc, trong thng tin l ng lc thcy s pht trin ca x hi, to nn mt cuc cchmng bng n lu lng Internet v lu lng truyn tid liu tnh ton qua mng vi giao thc truyn ti IP.

S bng n v cng ngh thng tin cng gp phnlm cho ngun ti nguyn a ch IPv4 ang dn cn kit. khc phc kh khn ny v p ng nhu cu x hi,cng ng IPv6 ra i.

Mt khc, cng vi s ra i ca Ipv6 s ra ica cng ngh truyn dn quang ghp knh theo b csng -WDM (Wavelength Division Multilexing), m giaion tip theo ca n l ghp knh quang theo b c sngmt cao - DWDM (Dense Wavelength DivisionMultilexing) vi nhng u im vt tri v bng thngrng/tc ln (ti hng ngn Terabit) v ch t lngtruyn dn cao (vi t l li bit t ti 10) to nnmt cuc cch mng trong mng truyn ti ca cc mngtruyn thng cng nh cc mng truyn ti d liu.

Kt hp hai cng ngh mng ny trn cng mt cs h tng mng to thnh mt gii php tch hp truynti IP trn quang to nn nhn t then cht xy dng nnmt mng truyn ti d liu th h mi.

Chnh v vy, cc hng trn th gii tp trungnghin cu, pht trin v trin khai cng ngh truyn tid liu IP trn quang.

Do , hc vin chn ti Nghin cu giiphp cng ngh truyn ti d liu IP trn quang v ngdng cho mng ng trc ca VNPT c t ra nhmtm hiu kin trc, cng ngh mng truyn ti d liu IP

2trn quang v xut c phng n pht trin truynti d liu IP trn quang cho mng ng trc ca VNPTlm ti lun vn thc s. thc hin c mc tiu , ti c thc hin vicc ni dung sau:

Chng 1 : Tng quan v cng ngh truyn tid liu IP trn quang. M u bng cch tr nh by c skhoa hc v tnh thc tin ca cng ngh truyn ti dliu IP trn quang, nhm gip c gi d tip cn vi ti. Sau , gii thiu chung v cng ngh IP ( IPv6, cchthc chuyn dn t IPv4 sang IPv6, IPv6 cho truyn ti IPtrn quang), v cng ngh truyn ti quang (ghp k nh abc sng WDM

Chng 2 : Cc gii gii php truyn ti d liuIP trn quang: Chng ny s trnh by chi tit tng giiphp truyn tri IP trn quang lit k ti chng 1.ng thi, tin hnh so snh cc gii php ny chnla ra gii php ph hp cho mng vin thng ng trcca Vit nam.

Chng 3 : ng dng cng ngh truyn ti dliu IP trn quang cho mng ng trc ca VNPT :y c coi l chng quan trng nht v c nghathc tin ca lun vn. chnh l qu chnh ca vicnghin cu khoa hc t c ca lun vn ( xut giiphp p dng, xy dng l trnh p dng cng nghtruyn ti d liu IP trn quang cho mng ng trc caVNPT).

3CHNG 1- TNG QUAN V CNG NGHTRUYN TI IP TRN WDM1.1 Xu th mng truyn ti d liu1.1.1. Xu hng pht trin dch v1.1.1.1. Pht trin cc dch v bng rngMt s cc dch v bng rng hay tc cao in hnhnh sau:

- Truyn hnh qua Internet- Thng mi in t- Cc ng dng y t t xa, chm sc sc khe vnghin cu y hc- E-Government,- Nghin cu v ging dy t xa- Th vin s- ng dng trong khoa hc v tr, thin vn hc

v vt l hc, khoa hc a l- ng dng trong nghin cu ha l- Cc ng dng nng cao kh nng nhn thc cacon ngi

1.1.1.2. Hi t dch v thoi v d liu1.1.1.3. Hi t dch v truyn thng qung b v truyn ti d liu IPTrong mng hi t bng rng, khch hng c th s dngcc dch v nh :

- Thng tin lin lc thy hnh thng qua my inthoi c nh

- 3 trong 1: khng cn thit phi c 3 thit b ti vi,Internet v my in thoi ring l na. Ngi s dng chcn 1 my PDA xem ti vi, lt web hoc thc hincuc gi.

4- Dch v phng ng:- Khng c s khc bit gia thng tin c nh v di

ng- Mi th u c ni mng

1.1.2. Xu hng pht trin lu lng v thtrng IP

S bng n ca mng s liu IP.T trng dch v IP tng mnh.Doanh thu dch v IP ng di tng nhanh.

1.1.3. Xu hng pht trin cng ngh1.1.3.1. IP - Giao thc thng nht ca mng truyn tid liu

a. Cc u vit ca giao thc IP- Phng thc chuyn mch gi, cc giao thc nh

tuyn s dng giao thc IP cho php truyn ti lu lngvi hiu sut cao, tn dng bng thng truyn ti, do tit kim c dung lng knh truyn dn.

- Phn ln cc phn mm ng dng thc hin traoi d liu mng lin kt trong cc sn phm my tnh cnhn, my ch, cc thit b nh tuyn u c thit k c th chy trn nn mng IP.

- Cc thut ton nh tuyn ng dng giao thc IPcho php trao i d liu trong mng lin kt mt cchmm do, linh hot.

- Cng ngh s dng giao thc IP c kh nng tchhp a dch v, da trn nn tng giao thc IP, ngi sdng c th kin to rt nhiu cc ng dng, cc loi hnhdch v khc nhau v cc d ch v gia tng trn nn tngcc ng dng c bn c cung cp bi mng IP.

5b. S pht trin ca giao thc IPS pht trin ca cng ngh IP gn lin vi s pht

trin ca mng Internet , lm cho gao thc IPv4 khngp ng ni v khng gian a ch v vy IPv6 ra i vgi li nhiu c im lm nn thnh cng ca IPv4: htr phi kt ni, kh nng phn on, nh tuyn ngun...

c. S bng n ca lu lng IPCng vi s ra i v pht trin ca nn kinh t tri

thc, s pht trin bng n ca lu lng IP cng nhcng ngh truyn dn IP bng rng/tc cao c kh nngtruyn ti c tt c cc dch v truyn thng hay d liulm cho truyn ti IP ang tr thnh phng thc truynti chnh

S tng trng theo cp s nhn ca lung l ulng IP c kt hp vi s tng trng ln mnh lintc ca vic s dng mng Internet v intranet din rng,.

d. IPv6 - Giao thc truyn ti ca mng truynd liu th h mi

IP phin bn 6 l phin bn mi ca giao thcInternet vn tr nn ht sc ph bin vi chng ta ng ynay (IP hay TCP/IP). S ra i ca IPv6 bt ngun t chngi ta pht hin ra nhng vn ny sinh trongmng IP khi m Internet pht trin vi tc vt bc.

IP phin bn 6 c thit k bao gm nhng chcnng v nh dng m rng hn IP phin bn 4.1.1.3.2. Xu hng truyn ti d liu tch hp IP tr nquang [3]

S pht trin mnh m ca cng ngh IP v sbng n v lu lng IP to nn mt cuc cch mngtruyn ti ca cc mng vin thng. Trong hu ht cckin trc mng vin xut cho tng lai u tha nhn

6s thng tr ca cng ngh truyn dn IP trn quang.c bit, truyn ti IP trn mng quang c xem l nhnt then cht.

C hai hng gii quyt chnh cho vn tr n l: gi li cng ngh c (theo tnh lch s), pht trin cctnh nng ph hp cho lp mng trung gian nh ATM vSDH truyn ti gi IP trn mng WDM, hoc to racng ngh v giao thc mi nh MPLS, GMPLS.1.2.Cc giai on pht trin tin ti mng IP tr nWDM.1.2.1 Giai on u IP trn ATM/SDH/WDM.

y l giai on u tin trong cng ngh truyn tiIP trn WDM. Cc gi IP tr c khi a vo mng truynti quang phi thc hin chia ct thnh cc t bo ATM.Sau khi xung tng SDH, cc t bo ATM c spxp v cc khung VC-n n hay khung ni mc xch VC-n-Xc. Cui cng cc lung SDH c ghp knh quang vtruyn trn si quang. Ti bn ch, qu trnh ny li cthc hin ngc li khi phc li cc gi IP.1.2.2 Giai on th hai IP trn SDH/DWDM.

So vi giai on 1, tng ATM b loi b v ccgi IP c chuyn trc tip xung tng NG -SDH. Nhvy, loi b c cc chc nng, s hot ng v chiph bo dng cho ring mng ATM.1.2.3 Giai on ba IP trn DWDM.

Trong giai on ny, tng SDH cng b loi b v IPdatagram c chuyn trc tip xung tng quang. Migiao thc IP s tng ng c mt bc sng tng ng.

Trong giai on ny c th s dng gii phpIP/GMPLS/DWDM, thc hin thm chc nng qun l

7c s h tng cc mng vin thng v thc hin chcnng iu khin IP/DWDM v gii phpIP/MPLS/DWDM

8CHNG 2 - CC GII PHP CNG NGHTRUYN TI D LIU IP/WDM2.1. Cng ngh truyn ti WDM

2.1.1. Nguyn l c bn ca k thut WDM2.3.2. Cc kin trc IP/WDM2.3.2.1. Kin trc IP/ATM/SDH/WDM

Hnh 2.1. Phn lp gii php IP/ATM/SDH/WDM Tng IP: Nhn d liu c phn mnh thnh cc

datagram c di t 250 n 65535 byte. Sau ccdatagram ny c chuyn xung tng thp h n. Qutrnh ngc li, s l cc datagram t tng di c tihp li thnh gi IP, ri chuyn cho cc dch v.

Tng iu khin logic v giao thc truy cp mngnhnh LLC/SNAP

Tng thch ng ATM (AAL5) : C chc nngtruyn dn d liu phi kt ni cho l u lng Internet vitc thay i VBR.

Tng ATM : Phn tch cc PDU-AAL5 thnh cc ti48 byte, sau thm 5 byte tiu cho mi phn ti 48byte to ra cc t bo ATM 53 byte.

Tng SDH : Ghp cc t bo ATM vo trong mtVC4 hoc ghp chui ti VC4 ca SDH.

92.3.2.2 Gii php IP/ATM/WDMMt kh nng khc ca vic tch hp IP vi WDM

l truyn ti trc tip bo ATM trn knh WDM. Theoquan im v mt kin trc, cc t bo ATM khng cng trong cc khung SDH m chng c gi trc tiptrn mi trng vt l thng qua t bo ATM to trn lpvt l.

Hnh 2.1 : Phn lp gii php IP/ATM/WDM.Mt s u im ca vic s dng ATM/SDH nh trnh by trn :

- K thut truyn dn n gin i vi t bo ATMkhi cc t bo c truyn trc tip trn mi trng vt lsau khi c ngu nhin ho.

- Mo u ca tn hiu truyn trn lp vt l t hn(khong 16 ln so vi SDH).

- ATM l phng thc truyn dn khng ng bnn khng i hi c ch nh thi nghim ngt vi mng.

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2.3.2.3 Gii php IP/SDH/WDMC th thc hin mt cch n gin truyn dn

khung SDH c ng gi cc IP datagram qua m ng WDMnh s dng cc Transponder (l b thch ng bc sng).Ta cng c th truyn dn cc khung SDH mang thng tinca cc IP datagram trn mng truyn ti SDH ng thivi cc loi lu lng dch v khc. Nhng cng vi spht trin ca c s h tng mng truyn ti quang OTNth truyn dn trn mng WDM l tt yu v c nhiu uim hn.

thc hin truyn dn IP tr n SDH c th s dngcc giao thc PPP/HDLC hay LAPS.

Gii php ny tn dng u im ca SDH bo vlu lng IP chng li s c t cp nh chc nngchuyn mch t ng (APS). iu ny cng c th thchin trong lp mng quang da tr n WDM

Hnh 2.2 : Phn lp gii php IP/SDH/WDM.2.3.2.4 Gii php IP/SDL/WDM

K thut tuyn s liu n gin (SDL) l mt phngphp lp khung c Lucent xut. So vi HDLC,khung SDL khng c c phn ranh gii thay v n sdng trng di gi ti im bt u khung. iu n yrt thun li tc bit cao khi thc hin ng b (rt

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kh thc hin i vi dy c). nh dng SDL c tha vo trong ti SDH cho truyn dn WDM hoc thit bSDH. nh dng ny cng c th c m ho trc tiptrn cc sng mang quang : SDL nh r tnh nng tithiu thc hin iu ny.

Hnh 2.3 : Phn lp gii php IP/SDL/WDM.SDL s dng 4 byte mo u. Gi s liu n gin c thdi ti 65535 byte. Cc m kim tra li ph (CRC-16 hocCRC-32) c th tu la s dng cho gi v n c th bthay th sau mi gi. Tt c cc bit tr m o u c trntheo b trn x48. Cc b trn ca phn pht v thu cduy tr ng b qua cc gi c bit truyn khng th ngxuyn.2.3.2.5 Gii php IP/GbE/WDM

Ethernet l chun hin nay ang c s dng rngri, bi hu ht cc dch v thng tin ng dng trn nn mngInternet v mng LAN. Chnh v vy, Gigabit Ethernet rt phhp trong mi trng Metro truyn ti lu lng IP qua ccmch vng WDM hoc thm ch cho c cc tuyn WDM c lydi. Hin nay, cc cng Ethernet 10 Gbit/s c chun ho.Hnh 1.3.

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Hnh 2.4: S u ni ca mng truyn tiIP/GbE/WDM.

2.3.2.6 Gii php IP/NG-SDH/WDMy l gii php s dng cng ngh NG -SDH thay choSDH. M hnh phn lp gii php IP/NG-SDH/WDMc ch ra hnh 1.2. Cho n nay c nhiu t chctiu chun nghin cc giao thc nhm sp xp lulng s liu vo trong ti ng b SDH. Trong b tiuchun GFP, VCAT, LCAS l b giao thc c ITUchun ha v ang c s dng trn thc t truyn tilu lng IP trn mng SDH

.

Hnh 2.5: Phn lp gii php IP/NG-SDH/WDM.

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2.3.2.7 Gii php IP/MPLS/WDMMPLS trn quang l vic lm th no s dng

MPLS ti tng quang. Tng knh quang cung cp cc ktni quang u cui ti u cui gia cc im truy nhp.Trong mng d liu, cc chc nng ch cht u cthc hin bi mt iu khin k thut l u lng MPLS.c bit, c th m rng mt lot cc giao thc MPLS TE iu khin hot ng cc thit b OXC v IP router.Trong trng hp ny, cc OXC c kh nng lp trnh vicc kt cu chuyn mch c th thay i cc kt ni v mt iu khin hon ho s thc hin c cc chc nngca tngquang.

Hnh 2.6: Phn lp gii php IP/MPLS/WDM.2.3.2.8 Gii php IP/WDM

Gii php ny thuc v tng lai m h thng truyndn s liu ang hng ti l kh nng truyn dn IP trctip trn h thng truyn dn quang WDM (DWDM). Giiphp ny t c s ti u v lp, nng cao ti a hiusut truyn dn ca mng. Vic t c gii php ny,ngoi cng ngh tin hc, gii php cn ph thuc vocng ngh vt liu tng ng vi cng ngh ca cc thitb vi quang tham gia trong h thng . Trong t ng lai,

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s thng nht ca mng IP v mng quang nh s dngcc b nh tuyn IP hot ng tc Gbps hay Tbpsph hp vi giao din quang tc cao, cng nh ccthit b truyn dn DWDM c kch th c v cu hnh khcnhau chc chn s to ra cc u im ni bt.

Hnh 2.7 : Gi php phn lp IP/WDM.2.3.2.9 Gii php IP trc tip trn si quang

Gii php ny thuc v tng lai m h thngtruyn dn s liu ang hng ti l kh nng truyn dnIP trc tip trn h thng truyn dn quang WDM(DWDM). Gii php ny t c s ti u v lp, nngcao ti a hiu sut truyn dn ca mng

M hnh phn lp gii php IP trc tip trn WDMc ch ra hnh 2.24.

Hnh 2.8: Gii php IP trc tip trn si quang.2.3.3 Cc m hnh kt ni mng IP/WDM

Cng ngh mng IP/WDM c nghin cu theohai ch chnh : kh nng cho php thit lp cu hnhmng linh hot v k thut chuyn mch trong mng

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Hin ny, c 3 m hnh gii php mng IP/WDM:- M hnh gii php ngang hng (peer).- M hnh gii php mng chng ln (over lay).- M hnh gii php lai gia m h nh trn (Hybrid).

2.3.3.1 M hnh gii php mng IP/WDM ngang h ng

Hnh 2.9 : M hnh mng IP/WDM ngang hng2.3.3.2 M hnh gii php mng IP/WDM xp chng

Hnh 2.10: M hnh mng IP/WDM xp chng.Nhng c trng ca m hnh chng ln :

- Kh nng giao tip m vi kh nng kt ni cvi ATM, SONET...

- Cho php mi mng con gii quyt c lp.- D dng thay i c lp trong tng mng con.- Bo mt thng tin cu h nh v ti nguyn.

NNI

WADM

(OXC)

UNI UNI UNIUNI

UNI UNI

UNIUNI NNI

WADM

(OXC)

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2.3.3.3 M hnh gii php mng IP/WDM lai

Hnh 2.11: M hnh gii php mng IP/WDM lai

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2.3.4. Cc phng php nh tuyn trong mngIP/WDM2.3.4.1 Phng php nh tuyn tch hp

Hnh 2.12: S nh tuyn tch hp trong mngIP/WDM.2.3.4.2 Phng php nh tuyn a ch vng.

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Hnh 2.13 : S nh tuyn a ch vng trongmng IP/WDM.2.3.4.3 Phng php nh tuyn chng ln

Phng php nh tuyn ny s dng cho m hnhgii php mng IP/WDM chng ln. Theo phng thcnh tuyn chng ln, c ch chng ln cho php b nhtuyn bin ng k v thc hin truy vn phn a ch mrng. Vic ny tng t c ch gii quyt a ch OP qualp ATM. Nh vy, mng quang c th thc hin vicng k hoc cho php b nh tuyn bin ng k a chIP v gn vi mt mng ring o VPN. B nh tuyn binc th cho php truy vn a ch m rng thuc v VPN.Mt truy vn thnh cng s tr v mt a ch ca cngca cng quang ra. Do kh nng giao tip kt ni IP l cgii hn, nn vic tnh ton bao nhiu knh quang c th thit lp tu thuc vo k thut lu lng cho php.

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CHNG 3 - NG DNG PHNG PHPIU KHIN IP TRN WDM CHO MNG NGTRC CA VNPT3.1 Hin trng mng truyn ti IP trn WDM v giiphp iu khin trn mng ng trc ca VNPT

VNPT sm nhn r c vai tr v kh nng camng NGN v tng bc chuyn sang mng vinthng NGN cung cp a dch v linh hot, nh inthoi, truyn s liu, Internet, pht thanh, truyn hnh, giitr qua mng, iu khin t xa.... Cho ti nay, mng NGNca VNPT trin khai song d n NGN giai on 2 gitt l VN2 ti tt c cc tnh/thnh ph trong c nc vVNPT ang tng bc chuyn lu lng t mng giaion 1 VN1 sang VN2.

p ng cho vic truyn ti lu lng rt lnhin nay, trong mng truyn ti NGN VNPT xy dngcc h thng truyn dn quang vi cng ngh DWDM tonn kin trc IP trn DWDM.3.1.1. Tng quan hin trng lp truyn ti NGN caVNPT v gii php iu khin

VNPT u t xy dng mng NGN mt phng 2(VN2) nhm tch hp ton b mng truyn ti hin cthnh mt mng truyn ti duy nht. Hin nay d n VN2 c a vo khai thc, lu l ng trn mt phng 1(VN1) ang tng bc chuyn sang mt phng 2. Phnny tp trung gii thiu v mng VN2.3.1.1.1. Gii php kin trc truyn ti IP trn DWDMtrn mng VN2

Mng IP trn DWDM ng trc ca VNPT cthit lp theo m hnh xp chng v hin ti truyn tilu lng IP qua mng DWDM qua cc khu trung gian

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nh IP/SDH/DWDM, IP/NG-SDH/DWDM vIP/MPLS/SDH/DWDM, IP/MPLS/NG -SDH/DWDM.

Mng VN2 n c kh nng cung cp cc dch vsau: Internet tc cao (HIS), Voice over IP (VoIP), ccdch v Multicast (nh IPTV, Video conferencing), ccdch v Unicast (nh Video on demand VoD), cc d chv VPN layer 3, cc dch v VPN layer 2, .3.1.1.2. Cu trc mng VN2

Hnh 3.1. S logic mng IP Core VN2M hnh m t kt ni vt l ca mng VN2 c ch ra hnh 3.2.

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Hnh 3.2. S kt ni vt l mng VN2.3.1.2 Mt s h thng truyn truyn ti DWDM ngtrc ca VNPT v cc gii php iu khin

Hin nay, mng truyn ti DWDM ng trc caVNPT c 4 h thng truyn dn chnh l hai h thngDWDM trc Bc Nam ca Nortel dung lng ln ti360 Gbps. Cc tnh pha Bc dng h thng DWDM caHuawei v khu vc min Nam dng h thng DWDM caFujitsu.Cc gii php iu khin cho cc h thng ny chyu vn l phng thc cp pht bc sng tnh v pdng cc gii php chuyn mch bo v truyn thng nh:MS-SPRing, OCh-DPRING. Ring DWDM ca HuaweiMt phng iu khin ASON-GMPLS thng nht trn ttc cc thit b Optix OSN bao gm thit b SDH, DWDM.OSN 6800 c cu trc da trn nn OTN v ASON. OSN6800 s dng cc u im ca cng ngh ASON-GMPLSgip cho nh vn hnh vin thng xy dng mng truyndn mm do, tin cy cao vi chi ph thp.3.2 Phng n pht trin v gii php iu khin IPtrn WDM cho mng ng trc ca VNPT.3.2.1 Giai on 2013 n 2015.

Trn c s mng ng trc giai on 2010-2013ca VNPT cng vi s pht trin cng ngh mi trn thgii v vi quan im u t pht trin mng gn vi tnhhiu qu, nn trong giai on ny VNPT cn thc hin ccvn sau:

- Loi b kin trc IP-MPLS/ SDH/DWDM,- Ch tip tc duy tr cc kin trc IP-MPLS/NG-

SDH/DWDM v IP/GE/NG-SDH/DWDM,

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- u t th nghim gii php IP/DWDM vikin trc IP trn quang DWDM theo m hnh m ng nganghng cho mng ng trc NGN ca VNPT.

Trong , nn thc hin cc gii php k thut sau:V mng li: Vn duy tr 5 nt mng H ni, nng,TP.H Ch Minh, Hi phng v Cn Th.

Hnh 3.3: Cu hnh mng trc giai on 2013-2015V mng bin: Cc im trc c t chc thnh nt adch v tt c cc tnh thnh.V mt s liu: vn s dng phng thc kt ni POS

(SDH v NG-SDH) gia cc b nh tuyn IP-MPLStrong mng quang. ng thi, kt hp s dng cc bnh tuyn qua mng truyn ti quangV mt qun l v iu khin: Tp trung gii quyt vn iu khin cho mt truyn ti quang DWDM tr thnh mngnh tuyn bc sng ng da trn cng ngh GMPLS.

S dng GMPLS cc nh cung cp dch v khngnht thit phi loi b tt c cc thit b mng hin c v muathit b mi t cng mt nh cung cp v c s mng trinkhai hin ti vn kh nng m rng ln GMPLS.3.2.2 nh hng pht trin v gii php iu khin IPtrn quang cho mng ng trc ca VNPT giai onsau 2015 .

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- Trn c s mng ng trc giai on 2010 -2015 ca VNPT; tnh hnh s dng cng ngh MPLS vcc h thng NG-SDH ca mng ng trc (dung lnghn ch, to tht nt c chai cho mng ng trc) v spht trin cng ngh mi trn th gii, nn trong giai onny VNPT cn thc hin cc vn sau:

- Loi b tip kin trc IP/MPLS/ NG-SDH/DWDM,- Duy tr v tp trung pht trin gii php kin trc

IP/DWDM vi kin trc IP trn quang DWDM theo mhnh mng ngang hng vi gii php iu khin GMPLScho mng ng trc NGN ca VNPT.

- Trong , nn thc hin cc gii php k thut sau:- V mng li vn 5 nt mng H ni, nng,

TP.H Ch Minh, Hi phng v Cn Th. Vn t chcmng li thnh 2 mt phng thc hin bo v thit b vcn bng ti v cu hnh mng li nn t chc theo cutrc Mesh tng tnh an ton ca mng trc (c th thchin kt ni vt l kt hp vi kt ni logic). Cu mngng trc giai on sau 2015 c trnh by hnh 3.10.- V mng bin: Cc im trc c t chc thnh nt

a dch v tt c cc tnh thnh.- V mt s liu: s dng cc b nh tuyn qua mng

truyn ti quang.

24

KT LUN

ng dng cng ngh truyn ti d liu IP tr nquang cho mng vin thng ng trc ca VNPT l mtvn thi s.

Trn c s nghin cu cc gii php cng ngh tchhp IP trn quang, cc giai o n pht trin, lun vn phn tch c s hin trng ca mng vin thng ngtrc ca VNPT, kt hp vi vic phn tch, chn laphng n thch hp cho mng trc ca Vit nam, t xut cc gii php cng ngh tch hp IP trn quang vl trnh pht trin ca mng vin thng ng trc caVNPT.

bo m tnh kinh t-k thut, vic ng dng cngngh truyn ti d liu IP trn quang cho mng vin thngng trc ca VNPT cn chia thnh nhiu giai on. Migii on c mt phng n ph hp.

- Giai on 2012-2013, s dng cng nghIP/MPLS/SDH/DWDM v u t trin khai gii phpIP/WDM trn c s s dng cng ngh GMPLS.

- Giai on 2013-2015, loi b kin trc IP/MPLS/SDH/DWDM, ch tip tc duy tr cc kin trcIP/MPLS/NG-SDH/DWDM v IP/GE/NG-SDH/DWDM,u t pht trin thm gii php IP/DWDM vi kin trcIP trn quang DWDM theo m hnh m ng ngang hng chomng ng trc NGN ca VNPT.

- Giai on sau 2015, loi b tip kin trcIP/MPLS/ NG-SDH/DWDM, duy tr v tp trung phttrin gii php kin trc IP/DWDM vi kin trc I P trnquang DWDM theo m hnh m ng ngang hng vi giiphp iu khin GMPLS cho mng ng trc NGN caVNPT.