docx 20111011 multicast vpn 03

7/29/2019 Docx 20111011 Multicast VPN 03

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BO COKHA LUN TT NGHIP

GVHD: Th.S Trng Tin VSVTH : inh Ngc Thin DuyLP : 25KTM

CHUYN NGNH: K THUT MNG

TI: TI:

GII PHP IP MULTICAST NG DNG VOGII PHP IP MULTICAST NG DNG VOMNG RING O VPNMNG RING O VPN


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www.themegallery.com

GII THIU

VPN l mt mng ring ca ngi dng da trn c s h tngmng cng cng. Chng c th c to ra bng cch s dngphn mm, phn cng hay kt hp c hai phn to ra mtkt ni bo mt gia hai mng ring i qua mng cng cng.

IP multicast l mt trong nhng cng ngh v tiu chun tiubiu cho php truyn dn a im - a im nh hi ngh truynhnh, hoc qung b m thanh, hnh nh trn Internet.

Qua thi gian nghin cu v tm hiu v IP Multicast, ti thyc nhng li ch m n em li trong lnh vc truyn thng.V y cng l l do m ti chn ti Gii php IPMulticast ng dng vo mng ring o VPN

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TNG QUAN V VPN

C BN V IP MULTICAST

NH TUYN IP MULTICAST TRN GNS3

KT LUN4

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NIDUNG

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Khi nim:

Mng ring o (VPN) l mt kt ni mng trin khai trn c sh tng mng cng cng vi chnh sch qun l v bo mtging nh mng cc b.

Chc nng: Tnh chnh xc - Tnh ton vn - Tnh bo mt

u im: V mt kinh t - Tnh linh hot - M rng v pht trin Nhc im:

S tin cy v thc thi

M ha v thut ton phc tptc x l my ch chm,

tt nghn mng, mt thng tin. S ri ro v an ninh

D dng b tn cng do dng chung ng truyn internet.

TNG QUAN V VPN

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PHN LOI MNG VPN

VPN truy nhp t xa

H thng bao gm mtmy ch c nhim v iuhnh h thng nhn v githng tin

Ngi dng truy nhp nmy ch thng quaInternet hoc sng vtuyn

Thc hin cng vic cuhnh v bo mt trong qutrnh trao i d liu l rtquan trng.

Trung tmd liu

Bc tngla

ServerVPN

Server

Server

Vn p

hngt xa

ng hm S dng ding

Ngi dngt xa

Internet

nghm

ng

hm

POPInternet

Di ng

Ngi dng , Doanhnghip

Extranet

POP

DSL

Cable

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PHN LOI MNG VPN

VPN cc b L mt trong nhng dng cu hnh VPN im ti im kt ni bo

mt gia cc im khc nhau ca mt cng ty

Tt c cc im trong VPN c th truy cp an ton ngun d liu vinhau

M hnh mng VPN cc b 6


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PHN LOI MNG VPN

VPN m rng

L mt trong nhng cu hnh ca VPN im ti im Cung cp bo mt d liu gia cc ngi dng vi nhau thng qua

mng cng cng

Cc kt ni c bo mt v khng b c lp vi h thng mng bnngoi

M hnh mng VPN m rng 7


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NHN XT

u im Khng cn h tr nhn vin mng bi v qu trnh kt ni txa c cc nh cung cp dch v thc hin

Cc khon chi ph c gim ti a v s dng ng truynInternet

Cung cp dch v gi r cho ngi dng t xa, to iu kinpht trin mng

Nhc im

Khng h tr dch v bo m cht lng dch v nn vic

mt cp d liu trn ng truyn l c th xy ra Gi tin c truyn i da trn mng Internet nn c th xy

ra hin tng nghn gi tin

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M HNH MNG VPN

M hnh VPN chng ln Thit lp gia cc ngi dng khi

cn thit

Nh cung cp dch v cung cpknh o cho ngi dng

Nhim v nh cung cp dch v ltruyn d liu im ti im giacc site

M hnh VPN ngang cp Nh cung cp dch v tham

gia vo hot ng nhtuyn ca ngi dng

Cc Router bin nh cung

cp dch v trao i trctip thng tin vi ccRouter bin ngi dng

VPN A /Site 2

192 .168 .2.37

VPN B / Site 2

192 .168 .2.38

VPN A /Site 3

192 .168 .3.39

VPN B /Site 3

192 .168 .4.40

VPN A /Site 1

192 .168 .1.36

VPN B /Site 1

192.168 .1.35

VPN A / Site 1

192.168.1.9

VPN B /Site 1

192.168.1 .10

VPN A /Site 2

196.168.2.11

VPN B /Site 2

196.168.2.12

VPN B /Site 3

196.168.4.15

VPN A /Site 3

196.168.3.14

CE

PE2

PE1

PE3

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GIAO THC BO MT IPSEC

IPSec l mt phng php bo v IP Datagram.Chc nng ca IPSEC:- Tnh xc thc- Tnh ton vn

- Tnh bo mt- M ha

IPSec cng thc hin ng gi d liu v x l cc thngtin thit lp, duy tr v hy b ng hm khi khng dngn na.

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CH M HA

C: 200.176.43.11C: 200.176.43.11 D: 192.60.75.3D: 192.60.75.3tunnel across WAN

VPNVPNGatewayGatewayVPNVPNGatewayGateway

Internet

B: 10.0.1.3B: 10.0.1.3A: 10.0.1.5A: 10.0.1.5transport between hosts

VPNVPNGatewayGatewayVPNVPNGatewayGateway

Ch transportch m ha phn payload ca mi gi tin,nhng b i phn header khng s n.Ch tunnelm ha c phn header v payload cungcp s thay i bo mt nhiu hn ca gi tin.

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LIN KT AN TON

Mt SA chnh l mt s tha thun gia hai u kt nicng cp chng hn nh giao thc IPSec. Hai giao thc

AH v ESP u s dng SA, v n l chc nng chnhca giao thc trao i kha IKE.

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GIAO THC XC THC TIU AH

Authentication Header (AH) l mt giao thc kha trong kin trcIPSec. N cung cp tnh xc thc v tnh ton vn cho IPdatagram.

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GIAO THC NG GI ESP

Encapsulation Security Payload (ESP) l mt giao thc khatrong IPSec, n cung cp tnh ton vn v bo mt (m ha)cho IP datagram.

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C BN V IP MULTICAST

IP Multicast l mt chun m ca IETF(Internet EngineeringTask Force) dng truyn dn cc gi d liu IP t mtngun n nhiu ch trong mt mng LAN hay WAN.Vic

gi bn tin Unicast v Broadcast l cc trng hp c bitca phng php Multicast. Truyn Multicast ci thin ngk v hiu sut, thng s dng bng thng nh hntruyn n trn mng, v cho php xy dng cc ng dng

phn tn hp l.

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http://tudiencongnghe.com/Special:Search/LANhttp://tudiencongnghe.com/Special:Search/WANhttp://tudiencongnghe.com/Special:Search/Unicasthttp://tudiencongnghe.com/Special:Search/Broadcasthttp://tudiencongnghe.com/Special:Search/Broadcasthttp://tudiencongnghe.com/Special:Search/Unicasthttp://tudiencongnghe.com/Special:Search/WANhttp://tudiencongnghe.com/Special:Search/LAN


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TRUYN DN UNICAST

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TRUYN DN MULTICAST

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PIM DENSE-MODE

PIM cho php router xc nh ng mt con ng cho cc gi

tin multicast v xc nh nhm multicast no cn c chuyn. 18


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PIM SPARSE-MODE

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IGMP

Giao thc IGMP cho php cc trm c th ng k tham gia hayri khi mt nhm ang hot ng.

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NG DNG TRONG IP MULTICAST

IP Multicast c ng dng trin khai internet TV, hi nghtrc tuyn, hi ngh theo yu cu, truyn m thanh, hnhnhng dng hiu qu trong lnh vc truyn thng.

Cc ng dng hin nay trn mng Internet u da vo giaothc truyn theo im, ging nh l cc ng dng trongmng LAN truyn thng.IP multicast gip cho mng tit kimc bng thng.S dng IP Multicast c th gim ti chomng.

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M hnh lab Multicast

NH TUYN IP MULTICAST TRN GNS3

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CC BC THC HiN

Bc 1: Cu hnh a ch IP trn cc router v cc interfaceloopback , cc host (interface loopback) thc hin gi cc giIGMP n cc router thng bo xin gia nhp nhm.

Bc 2: Cu hnh nh tuyn OSPF trn cc router qungb cc lp mng gia cc router vi nhau.

Bc 3: Thc hin cu hnh PIM Sparse Dense Mode

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Cng ngh mng ring o VPN by gi tr thnh mtcng ngh ph bin rng ri trn ton th gii v tr thnhmt trong nhng gii php khng th thiu i vi mt scc doanh nghip. Ty vo tng trng hp cng nh iukin thc t m chng ta c th trin khai mng VPN vinhng m hnh khc nhau.

Truyn thng Multicast ra i ci thin ng k cc yuim ca hai m hnh truyn thng c bn l Unicast vBroadcast. Cng ngh ny nhanh chng c chpnhn v ng dng trn nhiu lnh vc truyn thng.

KT LUN

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Thank You Listen For Me !!!Thank You Listen For Me !!!

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docx 20111011 multicast vpn 03

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