Chuong 3-Cong Nghe Mang MEN

Embed Size (px)

DESCRIPTION

VNPT

Text of Chuong 3-Cong Nghe Mang MEN

  • Cng ngh mng MENTrnh by: TS. L Quang Tun

    Cng ty Vin thng Lin Tnh

  • Cng ngh mng MENNi Dung

    Tng quan v cng ngh Cng ngh NG-SDH/NG-SDH Cng ngh WDM Cng ngh RPR Cng ngh thun Ethernet Cng ngh PBB v PBB-TE Cng ngh MPLS Cng ngh T-MPLS Kt lun

  • Nhng ng lc thc y phttrin cng ngh mng MEN

    S bng n v nhu cu v loi hnh trao i thng tin trong tt ccc lnh vc hot ng ca x hi nh kinh t, vn ha, gio dc, khoa hc l thut

    Mng cc b (LAN) ch p ng nhu cu trao i thng tin trongphm vi hp

    Cng ngh mng truyn thng (TDM, PSTN) khng p ng cnhu cu truyn ti bng rng v a dch v

    Xu hng cng ngh hng ti truyn ti gi v truyn ti tch hpa dch v (NGN)

    Xu hng tp trung u t xy dng cc mng ni vng, chuyni cng ngh, cung cp a dch v, a dch v ti gn ngi sdng, t mc ch cung cp dch v mi ni, mi lc, mi giaodin

    Cc loi hnh cng ngh truyn ti NGN (truyn dn, chuyn mch, nh tuyn) cho php kin to cc gii php thc hin mng MEN theo yu cu

  • Mc tiu ca cng nghmng MEN

    Truyn ti a loi hnh dch v, a tc , a giao din

    Gim chi ph u t xy dng mng Rt ngn thi gian p ng dch v cho khch

    hng D phng dung lng i vi s gia tng lu

    lng dng gi Tng li nhun t vic trin khai cc dch v mi Nng cao hiu sut khai thc mng

  • CCuu trtrcc phnphn llpp ccaa mmngng thth ((xxtt trntrn khkhaa ccnhnh ddchch vv))

  • Cu trc phn lp mng MEN (theo m hnh tham chiu OSI)

  • Cc cng ngh ch yuthc hin mang MEN

    SDH/SDH-NG WDM RPR Ethernet/Giagabit Ethernet (GE) PBB/PBB-TE MPLS/GMPLS T-MPLS

  • Nhng c im chnh cacng ngh mng MEN

    Cng ngh mng s dng cho phm vi mng kt ni cc my tnh hoc cc mngcc b, kt ni vi mng din rng WAN

    Cng ngh mng MEN thc cht l tphp cc gii php tch hp ca nhiu cngngh thc hin truyn ti lu lngEthernet

  • Cng ngh NG-SDH/NG-SDH

    Nhng c im chung ca cng ngh SDH Cng ngh truyn ti theo phng thc TDM

    da trn cu trc ghp knh phn cp ng b. Cung cp cc kt ni bng thng c nh c tc t vi Mbit/s ti hng chc Gbit/s

    Truyn ti thng tin trn kt ni c tin cy caodo s dng c ch phc hi bo/v

    c thit k ti u cho truyn ti dch v TDM

  • Cu trc ghp knh SDH

  • u im ca cng nghSDH truyn thng

    u im Cht lng truyn ti thng tin trn kt ni cao, tr

    truyn ti nh tin cy kt ni cao Cng ngh c chun ha Thun tin s dng cho m hnh kt ni im im Thit b c trin khai rng ri trn mng, tng

    thch vi nhiu chng loi thit b mng Qun l d dng

  • Nhc im ca cng nghSDH truyn thng

    Do SDH c thit k ti u cho phng thc truyn ti TDM, do vyc nhng nhc im khi trin khai SDH cho mng truyn ti d liugi: Kt ni cng, lng ph ti nguyn bng thng khi kt ni truyn ti lu

    lng gi Khng ti u v lng ph ti nguyn bng thng khi truyn ti lu lng

    gi trn cu trc t-p ring Ti nguyn mng dnh cho phc hi v bo v mng ln Khng ti u trong vic trin khai cc dch v qung b (multicast) Hiu qu s dng bng thng thp khi ghp d liu gi vo ti tin SDH Cu trc ghp knh qua nhiu cp, s lng thit b mng ln khi phi

    phn chia nhiu loi giao din khch hng Cc giao din mng khng tng thch vi cc giao din ca thit b

    Ethernet Chi ph nng cp m rng tn km Thi gian cung ng dch v cho khch hng lu

  • Hiu sut s dng bng thngkhi truyn dch v Ethernet qua

    mng SDH

    42%2,4GbpsVC-4-16c1Gbps

    67%150MbpsVC-4100Mbps

    21%48,4MbpsVC-310Mbps

    Hiu sut sdng bng

    thng

    Tc truynSDHEthenet

    Kt ni Hub cc thit bEthernet trong cu trc ring

    SDH

  • Cng ngh SDH th h mi(NG-SDH)

    Cng ngh NG-SDH c ci tin t cng ngh SDH nhm khc phc mt s nhc im ca cng nghSDH Cho php h tr truyn ti cc dch v truyn ti TDM v dch v

    truyn ti gi To cc giao thc ci thin hiu qu s dng bng thng khi

    truyn ti dch v d liu Cung cp cc giao din ghp ni chun vi thit b mng

    Ethernet Ci thin hiu nng thit b tng hiu qu truyn ti d liu vi

    kin trc t p ring Ci thin c ch kin to kt ni, gim thiu thi gian cung ng

    dch v ti khch hng

  • M hnh giao thc trongNG-SDH

  • Cu trc ghp cc loi hnhtn hiu trong NG-SDH

  • Cc giao thc chnh cb sung trong NG-SDH

    Th tc nh dng khung chung (GFP): Th tc spxp gi s liu ca bt k dch v tuyn s liu (data link) no nh Ethernet, qung b video s (DVB), lu tr ccb (SAN). So vi cc th tc nh dng khung khc nhPacket over SDH hay X.86, GFP c t l mo u thpnn khng i hi nhiu qu trnh phn tch x l

    Lin kt o (VCAT): Th tc to ra mt ng o vikch thc ph hp cho lu lng, linh hot v khnng tng thch cao vi cc k thut SDH hin c.

    Giao thc iu chnh dung lng tuyn (LCAS): thtc bo hiu thc hin phn nh hay hu b cc n vbng thng ph hp vi yu cu truyn ti s liu

  • Giao thc ghp khung tngqut GFP

    c chun ha trong ITU-T G.7041 L giao thc ng gi cn thit thch ng vi tnh bng

    pht ca lu lng dng gi Hin ti c hai th tc ghp khung thch ng vi tn hiu

    khch hng l:- Ghp GFP theo khung (GFP-F)

    + Thch hp cho ghp lu lng khung MAC Ethernet, cc giPPP/IP v cc PDU c ng khung HDLC

    - Ghp GFP trong sut (GFP-T)+ GFP ghp theo k t c dng truyn tc bit lin tc, d liui tng s dng m ho khi 8B/10B v thng tin iu khin cchuyn ti trong mng knh quang (Fiber Channel), ESCON, FICON v Ethernet Gigabit, tt vi cc dch v nhy cm v tr

  • Cu trc ghp khung tng qut GFP

  • Qu trnh ghp v chuyn ti cckhung GFP vo VC container trong

    cc khung STM

    STM-n

    314

    Cng 1

    Cng 2

    Cng n

    Cng 1

    Cng 2Cng n

    Hng i

    Rx

    Hng i

    Tx

    H thng

    ghp ph

    Khung STM

    Knh nh danh

    Sp xp

    GFP

    Gii sp xp

    GFP

    ng gi

    Sp xp

    Ghp knh

    TRUYNPhn knh

    Gii sp xp

    Gii ng gi

    Ethernet MSPP SDH EthernetMSPP

  • Lin kt o VCAT c chun ha trong ITU-T G.7042 L gii php tng hiu sut truyn ti ca bng thng c

    trong cc cp VC ca cu trc ghp SDH VCAT to ra ti lin tc tng ng vi X ln cc khi

    VC-n Tp hp container c goi l nhm container o(VCG), mi VC o l mt thnh vin ca VCG

    S dng 2 phng thc ghp knh o:+ Lin kt o bc cao (HO-VCAT) s dng container VC-3

    hoc VC-4 (VC-3/4-Xv, X=1...256), to ra dung lng ti l bica 48384 hay 149760 kbit/s.

    + Lin Kt o bc thp (LO-VCAT) VCAT s dng container VC-11, VC12, VC2 (VC-11/12/2-Xv, X=1..64), to ra dung lng lbi ca 1600, 2176 hay 6784 kbit/s.

  • Lin kt chui lin kt o

    2

    3

    4

    II

    III

    IV

    1

    Bng thng cn thitLin kt chuiMt ti tin chui

    Lin kt oMt ti tin chui

    SDH

    Mt tuyn622 Mb/s

    3x155

    Mb/s

    VC4-4c

    STS-12c SPE

    VC4-3v

    hoc STS-9v

    1 VCG

    3 thnh phn VC

    Mt s tuyn

    (3 trong SDH

    9 trong SONET)

    Chia bng thng

    (430Mb/s)

  • Hiu qu s dng bngthng bng lin kt o

  • Dung lng lin kt o SDH VC-n-Xv

    149,760 n 38,338,560 Kbps1 n 256 149,760 Kb/sVC-4

    48,384 n 12,386 Kbps1 n 256 48,384 Kb/s VC-3

    6,784 n 434,176 Kbps1 n 646,784 Kb/s VC-2

    2,176 n 139,264 Kbps1 n 64 2,176 Kb/s VC-12

    1,600 n 102,400 Kbps1 n 64 1,600 Kb/s VC-11

    Dung lng oThnh phn (x)Dung lngringSDH

  • So snh hiu sut s dngbng thng ghp mt s

    loi hnh dch v

    VC-4-7v (95%)VC-16c (42%)1000 Mb/sFibre Channel

    VC-3-4v (100%)VC-3-4v (100%)200 Mb/sFibre Channel

    VC-4-7v (95%)VC-16c (42%)1000 Mb/sGigabit Ethernet

    VC-3-2v (100%)VC-4 (67%)100 Mb/sEthernet

    Hiu sut bngthng c VCAT

    Hiu sut bngthng khng

    VCATTc Dch v

  • Cng ngh WDM Nhng nguyn l c bn

    Ghp knh theo bc sng (WDM) l cng ngh c bn to

    nn mng quang. K thut ny tn dng bng tn ca si quang

    bng cch truyn nhiu knh bc sng quang c lp v ring

    r trn cng mt si quang. Mi bc sng biu th cho mt

    knh quang trong si

    Mt cch nhn khc i vi nguyn l ghp bc sng l xem

    mi knh bc sng c mt mu sc khc nhau. V nh vy tn

    hiu truyn trn h thng WDM s ging nh mt chic cu

    vng

  • Nguyn l c bn ca hthng thng tin quang WDM

    1

    2

    3

    4

    E/O

    E/O

    E/O

    E/O

    MUX

    RM1S1

    RM4S4

    RM3S3

    RM2S2

    DEMUX

    1

    2

    3

    4

    SD1

    SD4

    SD3

    SD2

    O/E

    O/E

    O/E

    O/E

    R1

    R4

    R3

    R2

    OFA OFA

    1 2 3 4

  • Phn loi h thng WDM

    Phn loi v phng thc truyn H thng ghp bc sng mt hng s dng mi

    si quang cho tng hng truyn dn H thng ghp bc sng hai hng s dng mt

    si quang chung cho c hai hng truyn dn Phn loi phn b bc sng v khong cch

    gia cc bc sng WDM/DDWD CWDM

    Phn loi v cng ngh - chc nng H thng s dng ghp/tch bc sng (OADM) H thng chuyn mch bc sng (OXC/ROADM)

  • Nguyn l c bn ca hthng thng tin quang WDM

    1

    2

    3

    4

    E/O

    E/O

    E/O

    E/O

    MUX

    RM1S1

    RM4S4

    RM3S3

    RM2S2

    DEMUX

    1

    2

    3

    4

    SD1

    SD4

    SD3

    SD2

    O/E

    O/E

    O/E

    O/E

    R1

    R4

    R3

    R2

    OFA OFA

    1 2 3 4

  • H thng ghp bc sng mthng s dng mi si quang

    cho tng hng truyn dn1

    2

    3

    4

    E/O

    O/E

    E/O

    O/E

    MUX/DEMUX

    RM1S1

    SD4R4

    RM3S3

    SD2R2MUX/DEMUX

    1

    2

    3

    4

    SD1

    RM4

    SD3

    RM2

    O/E

    E/O

    O/E

    E/O

    R1

    S4

    R3

    S2

    2, 4

    1, 3

  • H thng ghp bc sng haihng s dng mt si quangchung cho c hai hng truyn

    dn1

    2

    3

    4

    E/O

    O/E

    O/E

    E/O

    MUX

    RM1S1

    SD4R4

    SD3R3

    RM2S2

    1

    2

    3

    4

    SD1

    RM4

    RM3

    SD2

    O/E

    E/O

    E/O

    O/E

    R1

    S4

    S3

    R2

    3, 4

    DEMUX

    DEMUX

    MUX

    1, 2

  • c im ca h thngWDM/DWDM

    S dng min bc sng 1500-1600 nm (bng C v L)

    Khong cch bc sng t 0,4 nm n1,6nm (200-50GHZ)

    Cng ngh hi