Chap01-Tong Quan Ve Mang May Tinh Va Truyen Thong

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<ul><li><p>24/10/2013</p><p>1</p><p>1</p><p>Mng my tnh</p><p>Ging vin: Bi Trng TngB mn Truyn thng v Mng my tnh</p><p>Vin Cng ngh thng tin v Truyn thngi hc Bch khoa H Ni</p><p>2</p><p>V mn hc ny</p><p> Ging vin</p><p>Bi Trng Tng, Vin CNTT&amp;TT - BK HN</p><p>Email : tungbt@soict.hut.edu.vn</p><p>a ch : phng 801 nh B1 - BKHN</p><p>ST : 04 3868 0896</p><p>http://soict.hut.edu.vn/~tungbt/MMT_CNCN.zip</p></li><li><p>24/10/2013</p><p>2</p><p>3</p><p>Ti liu tham kho</p><p> TCP/IP Illustrated Vol I-The Protocols, Richard Steves, Addison-Wesley</p><p> Internetworking with TCP/IP, Vol 1, Douglas Comer, Prentice Hall Computer </p><p> Networking: a top-down approach featuring the Internet, James F. Kurose, Keith W. Ross, Addison Wesley, 4thed, 2006</p><p> Mng my tnh v cc h thng m, Nguyn Thc Hi, NXB Gio Dc</p><p> TCP/IP tutorial and technical overview, Lydia Parziale, David T.Britt, ibm.com/redbooks</p><p>4</p><p>Chng 1. Tng quan v mng my tnh v truyn thng</p></li><li><p>24/10/2013</p><p>3</p><p>5</p><p>1. C bn v mng my tnh</p><p>6</p><p>ARPA: Advanced Research Project AgencyUCLA: University California Los Angeles SRI: Stanford Research InstituteIMP: Interface Message Processor</p><p>Source: http://www.cybergeography.org/atlas/historical.html</p><p>1.1. Lch s Internet</p><p> Bt u t mt th nghim ca d n ca ARPA</p><p> Mt lin kt gia hai nt mng (IMP ti UCLA v IMP ti SRI)</p></li><li><p>24/10/2013</p><p>4</p><p>7</p><p>3 thng sau, 12/1969</p><p>Mt mng hon chnh vi 4 nt, 56kbps</p><p>UTAHSRI</p><p>UCSBUCLA</p><p>UCSB:University of California, Santa Barbara</p><p>UTAH:University of Utah</p><p>source: http://www.cybergeography.org/atlas/historical.html</p><p>8</p><p>ARPANET thi k u, 1971</p><p>Mng pht trin vi tc thm mi nt mt thng</p><p>Source:http://www.cybergeography.org/atlas/historical.html</p></li><li><p>24/10/2013</p><p>5</p><p>9</p><p>Thp nin 70: Kt ni lin mng, kin trc mng mi v cc mng ring</p><p>10</p><p>S m rng ca ARPANET, 1974</p><p>Lu lng mi ngy vt qu 3.000.000 gi tinsource:http://www.cybergeography.org/atlas/historical.html</p></li><li><p>24/10/2013</p><p>6</p><p>11</p><p>Thp nin 70</p><p> T u 1970 xut hin cc mng ring: </p><p> ALOHAnet ti Hawaii</p><p> DECnet, IBM SNA, XNA</p><p> 1974: Cerf &amp; Kahn nguyn l kt ni cc h thng m (Turing Awards)</p><p> 1976: Ethernet, Xerox PARC</p><p> Cui 1970: ATM</p><p>12</p><p>Thp nin 80: Cc giao thc mi, kt ni thm mng mi</p></li><li><p>24/10/2013</p><p>7</p><p>13</p><p>1981: Xy dng mng NSFNET</p><p>NSF: National Science Foundation</p><p>Phc v cho nghin cu khoa hc, do s qu ti ca ARPANET</p><p>14</p><p>1986: Ni kt USENET&amp; NSFNET</p><p>Source: http://www.cybergeography.org/atlas/historical.html</p></li><li><p>24/10/2013</p><p>8</p><p>15</p><p>Thm nhiu mng v giao thc mi</p><p> Thm nhiu mng mi ni vo: MFENET, HEPNET (Dept. Energy), SPAN (NASA), BITnet, CSnet, NSFnet, Minitel </p><p> TCP/IP c chun ha v ph bin vo1980</p><p> Berkeley tch hp TCP/IP vo BSD Unix</p><p> Dch v: FTP, Mail, DNS </p><p>16</p><p>Thm nhiu mng v giao thc mi</p><p> Thm nhiu mng mi ni vo: MFENET, HEPNET (Dept. Energy), SPAN (NASA), BITnet, CSnet, NSFnet, Minitel </p><p> TCP/IP c chun ha v ph bin vo1980</p><p> Berkeley tch hp TCP/IP vo BSD Unix</p><p> Dch v: FTP, Mail, DNS </p></li><li><p>24/10/2013</p><p>9</p><p>17</p><p>Thp nin 90: Web v thng mi ha Internet </p><p>18</p><p>Thp nin 90</p><p> u 90: ARPAnet ch l mt phn ca Internet</p><p> u 90: Web</p><p> HTML, HTTP: Berners-Lee</p><p> 1994: Mosaic, Netscape</p><p> Cui 90: Thng mi </p><p>ha Internet</p><p>Cui 1990s 2000s:</p><p> Nhiu ng dng mi: chat, chia s file P2P</p><p> E-commerce, Yahoo, Amazon, Google</p><p> &gt; 50 triu my trm, &gt; 100 triu NSD</p><p> Vn an ton an ninh thng tin!</p><p> Internet dnh cho tt c mi ngi</p><p> Tt c cc dch v phi quan tm ti vn ny</p></li><li><p>24/10/2013</p><p>10</p><p>19</p><p>Lc s Internet Vit Nam</p><p> 1991: N lc kt ni Internet khng thnh. (V mt l do no )</p><p> 1996: Gii quyt cc cn tr, chun b h tng Internet ISP: VNPT</p><p> 64kbps, 1 ng kt ni quc t, mt s NSD</p><p> 1997: Vit Nam chnh thc kt ni Internet 1 IXP: VNPT</p><p> 4 ISP: VNPT, Netnam (IOT), FPT, SPT </p><p> 2007: Mi nm Internet Vit Nam 20 ISPs, 4 IXPs</p><p> 19 triu NSD, 22.04% dn s</p><p>20</p><p>Thng k gn y</p><p>Source: Vnnic, http://www.thongkeinternet.vn</p><p>20.822.8</p><p>26.8</p><p>30.522.0424.4</p><p>26.55</p><p>31.11</p><p>35.03</p><p>0</p><p>5</p><p>10</p><p>15</p><p>20</p><p>25</p><p>30</p><p>35</p><p>40</p><p>0.0</p><p>5.0</p><p>10.0</p><p>15.0</p><p>20.0</p><p>25.0</p><p>30.0</p><p>35.0</p><p>2007 2008 2009 2010 2011</p><p>%</p><p>Users</p><p> (m</p><p>illio</p><p>n)</p><p>Number of Internet users by year s ngi dng (triu ngi)% dn s</p></li><li><p>24/10/2013</p><p>11</p><p>21</p><p>Bng thng kt ni i quc t (Mbps), </p><p>Tng cng: 132202.0 Mbps</p><p>Bng thng kt ni i quc t (Mbps)</p><p>22</p><p>2007 2008 2009 2010 2011</p><p>Series1 12580 50064 53659 96320 132202</p><p>0</p><p>20000</p><p>40000</p><p>60000</p><p>80000</p><p>100000</p><p>120000</p><p>140000</p><p>Bn</p><p>g t</p><p>h</p><p>ng</p><p>Tc tng trng bng thng</p></li><li><p>24/10/2013</p><p>12</p><p>23</p><p>Internet nhng nm 2000s: Tng lai l ca cc bn</p><p> ng dng v cng ngh mi Youtube, Skype, Bittorrent, Video &amp; VoIP...</p><p> Mng khng dy, mng quang hc, thng tin di ng</p><p> .</p><p> Internet s tip tc ci tin dch v v bin i khng ngng Mang li s thun tin cho mi ngi</p><p> Chng ta c th lm c iu !</p><p>Thng k Internet 2012</p><p>24</p></li><li><p>24/10/2013</p><p>13</p><p>Thng k Internet 2012</p><p>25</p><p>Thng k Internet 2012</p><p>26</p></li><li><p>24/10/2013</p><p>14</p><p>Thng k Internet 2012</p><p>27</p><p>Thng k Internet 2012</p><p> Lu lng thng tin trao i : 168 triu a DVD</p><p> S email c gi i : 249 t (~90% l th rc)</p><p> Truy cp facebook : 4,7 t pht</p><p> Thi lng video ti ln youtube : 864.000 gi</p><p>28</p></li><li><p>24/10/2013</p><p>15</p><p>29</p><p>1.2. Cc khi nim c bn</p><p>30</p><p>1.2.1. Mng my tnh l g?</p><p> Tp hp cc my tnh kt ni vi nhau da trn mt kin trc no c th trao i d liu</p><p> My tnh: my trm, my ch, b nh tuyn</p><p> Kt ni bng mt phng tin truyn</p><p> Theo mt kin trc mng</p><p> Cc dng my tnh?</p></li><li><p>24/10/2013</p><p>16</p><p>ng truyn vt l</p><p> L cc phng tin vt l c kh nng truyn dn tn hiu</p><p> Phn loi: Hu tuyn: cp xon, cp ng trc, cp quang, </p><p> V tuyn: sng radio, viba, sng hng ngoi, </p><p> Mt s yu t c trng : Bng tn</p><p> tin cy : t l bt li khi truyn</p><p> suy hao</p><p>31</p><p>32</p><p>Kin trc mng</p><p> Kin trc mng: Hnh trng (topology) v giao thc (protocol)</p><p> Hnh trng mng</p><p> Trc (Bus), Vng (Ring), Sao (Star)</p><p> Thc t l s kt hp ca nhiu hnh trng khc nhau</p></li><li><p>24/10/2013</p><p>17</p><p>33</p><p>Giao thc l g?</p><p>Giao thc ngi-ngi</p><p>yu cu</p><p>tr li</p><p>request</p><p>response</p><p>Hi</p><p>Hi</p><p>Anh cho himy gi ri ?</p><p>2:00</p><p>Thi gian</p><p>Giao thc my-my</p><p>34</p><p>Giao thc mng</p><p> Protocol: Quy tc truyn thng</p><p> Gi mt thng ip vi yu cu hoc thng tin</p><p> Nhn mt thng ip vi thng tin, s kin hoc hnh ng</p><p> nh ngha khun dng v th t truyn, nhn thng ip gia cc thc th trn mng hoc cc hnh ng tng ng khi nhn c thng ip</p><p> V d v giao thc mng: TCP, UDP, IP, HTTP, Telnet, SSH, Ethernet, </p></li><li><p>24/10/2013</p><p>18</p><p>1.2.2. Phn loi mng my tnh</p><p>35</p><p>PAN (</p></li><li><p>24/10/2013</p><p>19</p><p>37</p><p>Chuyn mch gi vs. Chuyn mch knh</p><p> Chuyn mch knh Trao i d liu s dng mt knh ring .</p><p> Mi lin kt s dng mt knh. Ti nguyn cho knh khng c s dng bi ngi khc tr khi ng lin kt</p><p> Chuyn mch gi D liu c chia thnh cc gi nh (packets), v c </p><p>chuyn qua mng</p><p> Nhiu lin kt c th chia s mt knh</p><p> Internet (vi giao thc IP Internet Protocol) s dng chuyn mch gi</p><p>38</p><p>Chuyn mch knh</p><p>Ti nguyn c gn ring cho mi knhK c khi ti nguyn ca knh angg ri, ngi khc cng khng c dng</p></li><li><p>24/10/2013</p><p>20</p><p>39</p><p>Chuyn mch gi</p><p>Ton b bng thng c chia s cho tt c mi ngi, Nu cn bng thng, ai cng c th s dng </p><p>40</p><p>Chuyn mch gi vs. Chuyn mch knh</p><p> Chuyn mch knh Mi knh ch dng cho duy nht 1 lin kt</p><p> Bo m bng thng (cn cho cc ng dng audio/video)</p><p> Lng ph nu lin kt khng s dng ht kh nng ca knh</p><p> Chuyn mch gi Tng hiu qu s dng bng thng</p><p> Tt cho cc dng d liu n ngu nhin, khng nh trc </p><p> Hn ch: Tc nghn lm tr v mt gi tin, khng bo m bng thng</p></li><li><p>24/10/2013</p><p>21</p><p>41</p><p>Truyn thng hng lin kt vs. khng lin kt</p><p> Truyn thng hng lin kt : D liu c truyn qua mt lin kt c </p><p>thit lp</p><p> Ba giai on: Thit lp lin kt, truyn d liu, Hy b lin kt</p><p> Tin cy</p><p> Truyn thng khng lin kt Khng thit lp lin kt, ch c giai on truyn d </p><p>liu</p><p> Khng tin cy - Best effort</p><p>im-im v im-a im</p><p> im im (point-to-point)</p><p> Cc cp nt mng c kt ni ring bit</p><p> Mi nt ng vai tr lu tr v chuyn tip d liu</p><p> im a im (point-to-multipoint)</p><p> Cc nt mng s dng chung mt kt ni</p><p> D liu gi t 1 nt no s c nhn bi tt c cc nt cn li</p><p>42</p></li><li><p>24/10/2013</p><p>22</p><p>43</p><p>2. Mt s tham s trong mng</p><p>Cc thng s c bn</p><p> Bng thng</p><p> Thng lng</p><p> tr</p><p> Tr trn thit b u cui</p><p> Tr trn thit b trung gian</p><p> Tr truyn tin</p><p> Tr lan truyn</p><p> mt gi tin</p><p>44</p></li><li><p>24/10/2013</p><p>23</p><p> tr</p><p> dproc : tr u cui (vi s)</p><p> dqueue : tr trn thit b trung gian (ph thuc vo hiu nng thit b v tc nghn trn ng truyn)</p><p> dtrans :tr truyn tin (ph thuc bng thng)</p><p> dprop :tr lan truyn (vi s ti hng trm ms)</p><p>45</p><p>Tr v mt mt gi tin</p><p> S gi tin n vt qu kh nng chuyn tip ca thit b</p><p> Cc gi tin phi xp hng</p><p>46</p></li><li><p>24/10/2013</p><p>24</p><p>47</p><p>3. Kin trc phn tng</p><p>48</p><p>Phn chia cc chc nng trong vic trao i thng tin</p><p>Bn gi Bn nhnThng tin mun </p><p>trao i</p><p>Ngn ng</p><p>Chuyn t suy ngh sang li ni</p><p>Ngn ng</p><p>Thng tin nhn c</p><p>Cc phng tin truyn thng</p><p>Japanese?English?</p><p>Th?in thoi?E-mail?</p><p>Vic trao i thng tin s din ra sun s nu ti mi tng, cng mtphng tin c s dng</p></li><li><p>24/10/2013</p><p>25</p><p>49</p><p>V d phn tng (1)</p><p>B dn m thanh</p><p>Cassette</p><p>PlayerSpeakerAmplifier</p><p>Tt c chc nng u t c trong mt khi Khi mun thay i: Nng cp ton b</p><p>Phn tng Khng phn tng</p><p>50</p><p>ticket (purchase)</p><p>baggage (check)</p><p>gates (load)</p><p>runway (takeoff)</p><p>airplane routing</p><p>Sn bay i Sn bay nSn bay trung chuyn</p><p>airplane routing airplane routing</p><p>ticket (complain)</p><p>baggage (claim)</p><p>gates (unload)</p><p>runway (land)</p><p>airplane routing</p><p>ticket</p><p>baggage</p><p>gate</p><p>takeoff/landing</p><p>airplane routing</p><p>Phn tng cc chc nng hng khng</p><p>Tng: Mi tng c nhim v cung cp 1 dch v</p><p> Da trn cc chc nng ca chnh tng </p><p> Da trn cc dch v cung cp bi tng di</p></li><li><p>24/10/2013</p><p>26</p><p>51</p><p>V sao phi phn tng?</p><p> i vi cc h thng phc tp: nguyn l chia tr </p><p> Cho php xc nh r nhim v ca mi b phn v quan h gia chng</p><p> Cho php d dng bo tr v nng cp h thng</p><p> Thay i bn trong mt b phn khng nh hng n cc b phn khc</p><p> e.g., Nng cp t CD ln DVD player m khng phi thay loa.</p><p>52</p><p>2.1. M hnh OSI v TCP/IP</p></li><li><p>24/10/2013</p><p>27</p><p>53</p><p>OSI - Open System Interconnection: Bao gm 7 tng</p><p>Physical layer</p><p>Data link layer</p><p>Network layer</p><p>Transport layer</p><p>Session layer</p><p>Application layer</p><p>Tng mng</p><p>Presentation layer</p><p>H thng cui H thng cuiNt mng trung gian</p><p>Tng ng dng</p><p>Tng trnh din</p><p>Tng phin</p><p>Tng giao vn</p><p>Tng mng</p><p>Tng lin kt d liu</p><p>Tng vt l</p><p>54</p><p>Chc nng chung ca cc tng</p><p> Vt l: Truyn bits trn ng truyn</p><p> Lin kt d liu: Truyn d liu gia cc thnh phn ni kt trong mt mng</p><p> Mng: Chn ng, chuyn tip gi tin t ngun n ch</p><p> Giao vn: X l vic truyn-nhn d liu cho cc ng dng</p><p> Phin: ng b ha, check-point, khi phc qu trnh trao i</p><p> Trnh din: cho php cc ng dng biu din d liu, e.g., m ha, nn, chuyn i</p><p> ng dng: H tr cc ng dng trn mng.</p><p>application</p><p>presentation</p><p>session</p><p>transport</p><p>network</p><p>data link</p><p>physical</p></li><li><p>24/10/2013</p><p>28</p><p>M hnh OSI</p><p> Tng ng dng</p><p> Cung cp cc phng tin ngi s dng khai thc ti nguyn mng</p><p> Mt s giao thc : HTTP, DHCP, DNS, Telnet, FTP, SMTP, POP, ICMP, SMNP, NAT</p><p> Tng trnh din</p><p> Quyt nh dng thc trao i d liu gia cc my tnh mng</p><p> Bin dch d liu</p><p> M ha/ gii m</p><p> Giao thc: ASCII,Unicode, MPEG, SSL</p><p> Tng phin</p><p> Thit lp, qun l, kt thc phin truyn thng</p><p> iu khin hi thoi, ng b ha, qun l th bi</p><p> Mt s giao thc : RPC (Remote Control Call), NetBIOS</p><p>55</p><p>M hnh OSI Tng giao vn</p><p> Chia d liu thnh cc gi pha gi, hp cc gi pha nhn</p><p> m bo truyn d liu chnh xc gia cc im u cui (end-to-end) : m bo th t cc gi tin, kim sot li</p><p> Cc giao thc : UDP, TCP</p><p> Tng mng Truyn d liu theo cc gi tin</p><p> m bo d liu truyn n ng a ch </p><p> Cung cp cc c ch m bo cht lng dch v (QoS)</p><p> Chuyn i a ch</p><p> Giao thc : IP, IPX, ICMP (Internet Control Message Protocol), RIP, OSPF, BGP</p><p>56</p></li><li><p>24/10/2013</p><p>29</p><p>M hnh OSI</p><p> Tng lin kt d liu Cung cp phng tin truyn thng tin qua lin kt vt l m </p><p>bo tin cy: gi cc d liu theo cc khung tin (frame )vi c ch ng b ho, kim sot li v kim sot lung d liu.</p><p> Giao thc : HDLC, PPP, TokenRing, ARP, RARP</p><p> Tng vt l : a d liu ln ng truyn vt l Biu din d liu s 0 hoc 1</p><p> Chiu truyn tin (1 hay 2 chiu), cch thc thit lp, hy b kt ni</p><p> Cc giao thc tng vt l : RS232, V35</p><p>57</p><p>58</p><p>Session layer</p><p>Transport layer</p><p>Application layer</p><p>Presentation layer</p><p>Network layer</p><p>Datalink layer</p><p>Physical layer</p><p>M hnh OSI v TCP/IPTrong m hnh TCP/IP (Internet), chc nng3 tng trn c phn nh vo mt tng duy nht</p><p>Transport layer</p><p>Application</p><p>HTTP, FTP, SMTP </p><p>IP</p><p>Network Interface</p><p>Physical</p></li><li><p>24/10/2013</p><p>30</p><p>59</p><p>M hnh phn tng ca Internet</p><p>CAT5</p><p>Ethernet/10M</p><p>IP</p><p>TCP</p><p>FTP</p><p>CAT5</p><p>10M</p><p>IP</p><p>CAT5</p><p>100M/Ethernet</p><p>IP</p><p>TCP</p><p>FTP</p><p>Ngun chNt trung gian</p><p>100M</p><p>CAT5</p><p>V d v qu trnh gi d liu t ngun, qua nt</p><p>trung gian (b nh tuyn) ri n ch</p><p>60</p><p>2.2. Truyn thng trong kin trc phn tng</p></li><li><p>24/10/2013</p><p>31</p><p>61</p><p>ng gi d liu (Encapsulation)</p><p>a ch</p><p>Trang tr</p><p>Dn a ch</p><p>Gi qu</p><p>a ch</p><p>62</p><p>PDU: Protocol Data Unit n v d liu giao thc</p><p>(N+1) PDU</p><p>(N) PDU</p><p>(N-1) PDU</p><p>HN</p><p>HN HN-1</p><p>Layer (N+1)</p><p>Layer (N-1)</p><p>Layer (N)</p><p>Service interface</p><p>Service interface</p><p>Protocol N+1</p><p>Protocol N</p><p>Protocol N-1</p><p>addr.</p></li><li><p>24/10/2013</p><p>32</p><p>63</p><p>Data Data</p><p>ExHTTP header</p><p>H giao thc TCP/IP v qu trnh ng gi</p><p>TCP header</p><p>IP header</p><p>Ethernet Frame</p><p>Signal</p><p>Network Interface</p><p>TCP</p><p>Application</p><p>Physical</p><p>IP</p><p>Sender Receiver</p><p> Bn gi Mi tng thm vo cc thng tin iu khin vo phn </p><p>u gi tin (header) v truyn xung tng di</p><p> Bn nhn Mi tng x l gi tin da trn thng tin trong phn u, </p><p>sau b phn u, ly phn d liu chuyn ln tng trn.</p><p>Network Interface</p><p>TCP</p><p>Application</p><p>Physical</p><p>IP</p><p>64</p><p>SAP: Service Access Point im truy nhp dch v</p><p>TCP/UDP TCP/UDP</p><p>Internet</p><p>Client 1</p><p>Client 2</p><p>Server 3</p><p>Server 1</p><p>Server 2</p><p>Client 3</p><p>Network</p><p>Application</p><p>Protocol 1</p><p>Protocol 1</p><p>Protocol 1</p><p>TCP/UDP </p><p>protocol</p><p>SAP SAP</p></li><li><p>24/10/2013</p><p>33</p><p>65</p><p>CAT5WDM</p><p>End node End nodeIntermediate node</p><p>CAT5</p><p>Ethernet/10M</p><p>IP</p><p>TCP</p><p>FTP</p><p>Ethernet/100M</p><p>IP</p><p>TCP</p><p>FTP</p><p>WDM</p><p>10M</p><p>IP</p><p>10G</p><p>CAT5</p><p>10G</p><p>IP</p><p>CAT5</p><p>D liu - payload</p><p>Protocol stack v qu trnh ng gi</p><p>66</p><p>CAT5WDM</p><p>End node End nodeIntermediate node</p><p>CAT5</p><p>Ethernet/10M</p><p>IP</p><p>TCP</p><p>FTP</p><p>Ethernet/100M</p><p>IP</p><p>TCP</p><p>FTP</p><p>WDM</p><p>10M</p><p>IP</p><p>10G</p><p>CAT5</p><p>10G</p><p>IP</p><p>CAT5</p><p>TCP header D liu - payload</p><p>Protocol stack v qu trnh ng gi</p></li><li><p>24/10/2013</p><p>34</p><p>67</p><p>CAT5WDM</p><p>End node End nodeIntermediate node</p><p>CAT5</p><p>Ethernet/10M</p><p>IP</p><p>TCP</p><p>FTP</p><p>Ethernet/100M</p><p>IP</p><p>TCP</p><p>FTP</p><p>WDM</p><p>10M</p><p>IP</p><p>10G</p><p>CAT5</p><p>10G</p><p>IP</p><p>CAT5</p><p>IP header TCP header D liu - payload</p><p>Protocol stack v qu trnh ng gi</p><p>68</p><p>CAT5WDM</p><p>End node End nodeIntermediate node</p><p>CAT5</p><p>Ethernet/10M</p><p>IP</p><p>TCP</p><p>FTP</p><p>Ethernet/100M</p><p>IP</p><p>TCP</p><p>FTP</p><p>WDM</p><p>10M</p><p>IP</p><p>10G</p><p>CAT5</p><p>10G</p><p>IP</p><p>CAT5</p><p>IP header TCP header D liu - payloadEthernet header</p><p>Protocol stack v qu trnh ng gi</p></li><li><p>24/10/2013</p><p>35</p><p>69</p><p>CAT5WDM</p><p>End node End nodeIntermediate node</p><p>CAT5</p><p>Ethernet/10M</p><p>IP</p><p>TCP</p><p>FTP</p><p>Ethernet/100M</p><p>IP</p><p>TCP</p><p>FTP</p><p>WDM</p><p>10M</p><p>IP</p><p>10G</p><p>CAT5</p><p>10G</p><p>IP</p><p>CAT5</p><p>IP header TCP header D liu - payload</p><p>Protocol stack v qu trnh ng gi</p><p>70</p><p>CAT5WDM</p><p>End node End nodeIntermediate node</p><p>CAT5</p><p>Ethernet/10M</p><p>IP</p><p>TCP</p><p>FTP</p><p>Ethernet/100M</p><p>IP</p><p>TCP</p><p>FTP</p><p>WDM</p><p>10M</p><p>IP</p><p>10G</p><p>CAT5</p><p>10G</p><p>IP</p><p>CAT5</p><p>IP header TCP header D liu - payloadWDM header</p><p>Protocol stack v qu trnh ng gi</p></li><li><p>24/10/2013</p><p>36</p><p>71</p><p>CAT5WDM</p><p>End node End nodeIntermediate node</p><p>CAT5</p><p>Ethernet/10M</p><p>IP</p><p>TCP</p><p>FTP</p><p>Ethernet/100M</p><p>IP</p><p>TCP</p><p>FTP</p><p>WDM</p><p>10M</p><p>IP</p><p>10G</p><p>CAT5</p><p>10G</p><p>IP</p><p>CAT5</p><p>IP header TCP header D liu - payload</p><p>Protocol stack v qu trnh ng gi</p><p>72</p><p>CAT5WDM</p><p>End node End nodeIntermediate node</p><p>CAT5</p><p>Ethernet/10M</p><p>IP</p><p>TCP</p><p>FTP</p><p>Ethernet/100M</p><p>IP</p><p>TCP</p><p>FTP</p><p>WDM</p><p>10M</p><p>IP</p><p>10G</p><p>CAT5</p><p>10G</p><p>IP</p><p>CAT5</p><p>IP header TCP header D liu - payloadEthernet header</p><p>Protocol stack v qu trnh ng gi</p></li><li><p>24/10/2013</p><p>37</p><p>73</p><p>CAT5WDM</p><p>End node End nodeIntermediate node</p><p>CAT5</p><p>Ethernet/10M</p><p>IP</p><p>TCP</p><p>FTP</p><p>Ethernet/100M</p><p>IP</p><p>TCP</p><p>FTP</p><p>WDM</p><p>10M</p><p>IP</p><p>10G</p><p>CAT5</p><p>10G</p><p>IP</p><p>CAT5</p><p>IP header TCP header D liu - payload</p><p>Protocol stack v qu trnh ng gi</p><p>74</p><p>CAT5WDM</p><p>End node End nodeIntermediate node</p><p>CAT5</p><p>Ethernet/10M</p><p>IP</p><p>TCP</p><p>FTP</p><p>Ethernet/100M</p><p>IP</p><p>TCP</p><p>FTP</p><p>WDM</p><p>10M</p><p>IP</p><p>10G</p><p>CAT5</p><p>10G</p><p>IP</p><p>CAT5</p><p>TCP header D liu - payload</p><p>Protocol stack v qu trnh ng gi</p></li><li><p>24/10/2013</p><p>38</p><p>75</p><p>CAT5WDM</p><p>End node End nodeIntermediate node</p><p>CAT5</p><p>Ethernet/10M</p><p>IP</p><p>TCP</p><p>FTP</p><p>Ethernet/100M</p><p>IP</p><p>TCP</p><p>FTP</p><p>WDM</p><p>10M</p><p>IP</p><p>10G</p><p>CAT5</p><p>10G</p><p>IP</p><p>CAT5</p><p>D liu - payload</p><p>Protocol stack v qu trnh ng gi</p><p>76</p><p>Tm tt: u im ca kin trc phn tng Chia nh cho php xc nh d dng chc nng </p><p>mi tng</p><p> Cc tng hot ng c lp Tng trn ch quan tm n vic s dng tng di m </p><p>khng quan tm n cc tng xa hn</p><p> Cho php nh ngha giao din chung gia cc tng</p><p> Kh nng m rng</p><p> Mm do, linh hot vi cc cng ngh mi Trao i gia cc tng ng mc</p><p> C th ci tin h thng bng cch thay th mt cng ngh mi ca tng tng ng : ISDNADSLFTTHIPv4IPv6</p><p> Nu