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1 H畛C VI畛N CNG NGH畛 B働U CHNH VI畛N THNG BI GI畉NG MN Internet v giao th畛c (Internet and Protocols) C10VT1-2-3 1- Gi畉ng vi棚n: Ths. Nguy畛n Th畛 Thu H畉ng i畛n tho畉i/E-mail: 04 33515 484 - 38549 352 ptitthuhang@gmail.com, hangntt@ptit.edu.vn, bomonmangvt1@yahoo.com B畛 m担n: M畉ng vi畛n th担ng - KhoaVi畛n th担ng 1 H畛c k畛/Nm bi棚n so畉n: I/ 2012-2013 1 Internet v giao th畛cInternet v giao th畛c Ch動董ng 1: Network Application Architecture (Ki畉n tr炭c 畛ng d畛ng m畉ng) 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- N畛i dung ch動董ng 1 C叩c l畛p giao th畛c (Protocol Layers) Client-Server v畛i Peer-to-Peer (Client-Server vs. Peer-to-Peer) Ti畉n tr狸nh truy畛n th担ng (Process Communication) T棚n, 畛a ch畛, c畛ng (Names, Addresses, Ports) V畉n chuy畛n (Transports) 2 Internet v giao th畛cInternet v giao th畛c Internet l g狸 Hng tri畛u thi畉t b畛 k畉t n畛i v畛i nhau: Mobile networkPC s n畛i v畛i nhau: hosts = end systems running network apps Home network Global ISP Regional ISP server wireless laptop cellular handheld access i ts 動畛ng/k棚nh truy畛n th担ng fiber, copper, radio, satellite 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- Institutional network router wired links points sate te T畛c 畛 truy畛n= bandwidth routers: chuy畛n ti畉p goi (c叩c o畉n d畛 li畛u) 3 Internet v giao th畛cInternet v giao th畛c M畉ng c坦 r畉t nhi畛u thnh ph畉n Fibers Links (li棚n k畉t) Interfaces (c叩c giao di畛n) Switches/routers Large router Coaxial Cable Ethernet card g 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- 4 Wireless card Telephone switchTwisted Cable
2 Internet v giao th畛cInternet v giao th畛c p d畛ng 畛c 叩o tr棚n Internet Khung 畉nh IP http://www.ceiva.com/ 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- Server web nh畛 nh畉t th畉 gi畛i http://www-ccs.cs.umass.edu/~shri/iPic.html i畛n tho畉i Internet 5 Internet v giao th畛cInternet v giao th畛c Internet l g狸 C叩c giao th畛c: i畛u khi畛n vi畛c g畛i v nh畉n c叩c b畉n tin Mobile network Global ISP g畛i v nh畉n c叩c b畉n tin V鱈 d畛: TCP, IP, HTTP, Skype, Ethernet Internet: m畉ng c畛a c叩c m畉ng T鱈nh ph但n c畉p l畛ng l畉o Internet c担ng c畛ng v畛i intranet ri棚ng bi畛t Home network Institutional network Regional ISP 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- C叩c chu畉n Internet RFC: Request for comments IETF: Internet Engineering Task Force http://www.ietf.org/ 6 Internet v giao th畛cInternet v giao th畛c Internet l g狸: quan i畛m d畛ch v畛 C董 s畛 h畉 t畉ng truy畛n th担ng (communication infrastructure) tri畛n( ) khai c叩c 畛ng d畛ng ph但n t叩n Web, VoIP, email, games, e- commerce, chia s畉 file C叩c d畛ch v畛 truy畛n th担ng cung c畉p cho c叩c 畛ng d畛ng: Kh畉 nng chuy畛n d畛 li畛u tin 畉 畛 畛 畛 鱈 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- c畉y t畛 ngu畛n t畛i 鱈ch Truy畛n d畛 li畛u n畛 l畛c t畛i a best effort (kh担ng tin c畉y) 7 Internet v giao th畛cInternet v giao th畛c Giao th畛c (protocol) l g狸? C叩c giao th畛c c畛a con ng動畛i : C叩c giao th畛c c畛a m畉ng: M叩 坦 h畛 kh担 h畉ing動畛i : B但y gi畛 l m畉y gi畛? T担i mu畛n h畛i L畛i gi畛i thi畛u b畉n tin 畉c bi畛t 動畛c g畛i M叩y m坦c ch畛 kh担ng ph畉i con ng動畛i T畉t c畉 c叩c ho畉t 畛ng truy畛n th担ng tr棚n Internet 動畛c qu畉n l箪 th担ng qua c叩c giao th畛c 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- 畉 畛 畛 g i c叩c hnh 畛ng c畛 th畛 khi nh畉n 動畛c b畉n tin hay khi c坦 c叩c s畛 ki畛n kh叩c C叩c giao th畛c 畛nh ngh挑a khu担n d畉ng, ti畉n tr狸nh g畛i v nh畉n tin gi畛a c叩c th畛c th畛 trong m畉ng v 動a ra c叩c hnh 畛ng t動董ng 畛ng th担ng qua c叩c b畉n tin truy畛n v nh畉n 8
3 Internet v giao th畛cInternet v giao th畛c Giao th畛c (protocol) l g狸? Giao th畛c c畛a con ng動畛i v m畉ng m叩y t鱈nh Cho anh Cho em Anh 董i, b但y gi畛 l m畉y gi畛 畉? Y棚u c畉u k畉t n畛iTCP 叩p 畛ng k畉t n畛iTCP <truy畛n file> 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- Q: C嘆n giao th畛c no trong cu畛c s畛ng? B但y gi畛 l 2gi畛 time C叩c giao th畛c 畉c t畉 c炭 ph叩p (syntax) v ng畛 ngh挑a (semantics) Syntax: c叩ch c畉u tr炭c giao th畛c Khu担n d畉ng, tr狸nh t畛 c叩c b畉n tin 動畛c g畛i v nh畉n Semantics: 箪 ngh挑a c畛a c叩c b鱈t C叩ch th畛c ph畉n h畛i c叩c b畉n tin, s畛 ki畛n, v.v. 9 Internet v giao th畛cInternet v giao th畛c Ch動董ng 1: Network Application Architecture C叩c l畛p giao th畛c (Protocol Layers) 畛ng畛ng d畛ngd畛ng Tr狸nh di畛n Phi棚n Application Presentation Session Data Application Header Data Presentation Header Data Session Header T t OSI model 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- V畉n chuy畛n M畉ng Li棚n k畉t d畛 li畛u V畉t l箪 Transport Network Data Link Physical Data Transport Header Data Network Header 0101101010110001 Data Frame Header 10 Internet v giao th畛cInternet v giao th畛c M担 h狸nh ph但n l畛p OSI Application7 Network Routing, Call control IP internetworking Link Transport Network Presentation Session 4 3 6 5 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- 11 Ethernet, FDDI Circuit, ATM, FR switches Physical SONET, T1, T3 Physical Link 1 2 Internet v giao th畛cInternet v giao th畛c M担 h狸nh ph但n l畛p OSI Session, Presentation, Application7 , , Application Data, voice encodings Authentication web/http, ftp, telnet Transport Transport Network Presentation Session 4 3 6 5 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- 12 p Error and congestion control TCP, UDP Physical Link 1 2
4 Internet v giao th畛cInternet v giao th畛c Internet: c叩c l畛p x畉p ch畛ng gi畛ng nh動 畛ng h畛 c叩t Giao th畛c 畛ng 畛ng d畛ng Giao th畛c 畛ng d畛ng Chuy畛n g坦i kh担ng tin c畉y M畉ng l畛p th畉p V畉n chuy畛n tin c畉y 1- M畉ng l畛p th畉p C叩c l畛p v畉t l箪 13 Internet v giao th畛cInternet v giao th畛c Ki畉n tr炭c giao th畛c Internet M担 h狸 h OSI M担 h狸 h TCP/IP B畛 giao th畛c TCP/IP l s畛 k畉t h畛p c畛a c叩c giao th畛c kh叩c nhau 畛 c叩c t畉ng kh叩c nhau, kh担ng L畛p 畛ng d畛ng L畛p tr狸nh di畛n L畛p phi棚n L畛p v畉n chuy畛n T畉ng 畛ng d畛ng T畉ng v畉n chuy畛n M担 h狸nh OSI M担 h狸nh TCP/IP ch畛 c坦 c叩c giao th畛c TCP v IP. M畛i t畉ng l畉i c坦 ch畛c nng ri棚ng. H畉u h畉t c叩c d畛 li畛u truy畛n tr棚n b畛 giao th畛c TCP/IP 畛u k畉t th炭c 坦ng g坦i 畛 d畛 li畛u 畛 IP (IP datagram), tr畛 ARP v RARP 動畛c 坦ng g坦i tr畛c ti畉p 畛 Khung 1- 14 L畛p m畉ng L畛p li棚n k畉t d畛 li畛u L畛p v畉t l箪 T畉ng li棚n m畉ng T畉ng giao di畛n m畉ng L畛p li棚n k畉t d畛 li畛u L畛p v畉t l箪 g坦i tr畛c ti畉p 畛 Khung l畛p li棚n k畉t (Link Level Frames) Internet v giao th畛cInternet v giao th畛c Ki畉n tr炭c giao th畛c Internet RTP SNMPDNSTELNETFTP HTTPPing TCP UDP OSPF BGPSMTP ICMP IP RIP 1- LANs PPPATM FR 10/100BaseT Dedicated B/W: DSx, SONET, ... Circuit-Switched B/W: POTS, SDS, ISDN, ... CDPD Wireless Internet v giao th畛cInternet v giao th畛c Ch動董ng 1: Network Application Architecture Client-server v畛i Peer-to-Peer Ki畉n tr炭c 畛ng d畛ng Internet Client-Server Peer-to-Peer Lai gh辿p Client-Server v畛i Peer-to-Peer 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- 16
5 Internet v giao th畛c Clients v Servers (Kh叩ch/ch畛) Ch動董ng tr狸nh Client Ch畉y tr棚n tr畉m cu畛i Ch動董ng tr狸nh Server Ch畉y tr棚n tr畉m cu畛i畉y 畉 Y棚u c畉u d畛ch v畛 V鱈 d畛: Web browser 畉y 畉 Cung c畉p d畛ch v畛 V鱈 d畛: Web server GET /index.html 1- 17Trang web ang 動畛c x但y d畛ng Internet v giao th畛cInternet v giao th畛c Ki畉n tr炭c Client-server Clients (c叩c m叩y kh叩ch): Truy畛n th担ng v畛i m叩y ch畛 C坦 th畛 動畛c k畉t n畛i kh担ng li棚n t畛c C坦 th畛 c坦 c叩c 畛a ch畛 IP 畛ng Kh担ng truy畛n th担ng tr畛c ti畉p v畛i nhau Server (m叩y ch畛):client/server 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- 18 L tr畉m lu担n 畛 tr畉ng th叩i ho畉t 畛ng C坦 畛a ch畛 IP c畛 畛nh M畛 r畛ng t畉o thnh c叩c server farms Internet v giao th畛cInternet v giao th畛c Ki畉n tr炭c Peer-to-Peer thu畉n Server kh担ng ph畉i lu担n ho畉t 畛ngho畉t 畛ng C叩c h畛 th畛ng 畉u cu畛i b畉t k畛 truy畛n th担ng tr畛c ti畉p C叩c peer 動畛c k畉t n畛i tu畛 箪 v c坦 畛a ch畛 IP thay 畛i peer-peer 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- thay 畛i D畛 m畛 r畛ng nh動ng kh坦 qu畉n l箪 19 Internet v giao th畛cInternet v giao th畛c Lai gh辿p client-server v P2P Skype 畛ng d畛ng voice-over-IP P2P 畛ng d畛ng voice over IP P2P Server t畉p trung: t狸m 畛a ch畛 畉u xa K畉t n畛i client-client : tr畛c ti畉p (kh担ng qua server) Nh畉n tin ng畉n tr棚n m畉ng Chatting gi畛a hai ng動畛i d湛ng l P2P D畛ch v畛 t畉p trung: ph叩t hi畛n v畛 tr鱈/hi畛n di畛n c畛a client 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- client Ng動畛i d湛ng ng k箪 畛a ch畛 IP c畛a m狸nh v畛i server trung t但m khi l棚n online Ng動畛i s畛 d畛ng k畉t n畛i t畛i trung t但m 畛 t狸m 畛a ch畛 c畛a b畉n ch叩t 20

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2012 b01-chuong1-cac lop giao thuc p2 p-sv

  • 1. 1 H畛C VI畛N CNG NGH畛 B働U CHNH VI畛N THNG BI GI畉NG MN Internet v giao th畛c (Internet and Protocols) C10VT1-2-3 1- Gi畉ng vi棚n: Ths. Nguy畛n Th畛 Thu H畉ng i畛n tho畉i/E-mail: 04 33515 484 - 38549 352 ptitthuhang@gmail.com, hangntt@ptit.edu.vn, bomonmangvt1@yahoo.com B畛 m担n: M畉ng vi畛n th担ng - KhoaVi畛n th担ng 1 H畛c k畛/Nm bi棚n so畉n: I/ 2012-2013 1 Internet v giao th畛cInternet v giao th畛c Ch動董ng 1: Network Application Architecture (Ki畉n tr炭c 畛ng d畛ng m畉ng) 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- N畛i dung ch動董ng 1 C叩c l畛p giao th畛c (Protocol Layers) Client-Server v畛i Peer-to-Peer (Client-Server vs. Peer-to-Peer) Ti畉n tr狸nh truy畛n th担ng (Process Communication) T棚n, 畛a ch畛, c畛ng (Names, Addresses, Ports) V畉n chuy畛n (Transports) 2 Internet v giao th畛cInternet v giao th畛c Internet l g狸 Hng tri畛u thi畉t b畛 k畉t n畛i v畛i nhau: Mobile networkPC s n畛i v畛i nhau: hosts = end systems running network apps Home network Global ISP Regional ISP server wireless laptop cellular handheld access i ts 動畛ng/k棚nh truy畛n th担ng fiber, copper, radio, satellite 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- Institutional network router wired links points sate te T畛c 畛 truy畛n= bandwidth routers: chuy畛n ti畉p goi (c叩c o畉n d畛 li畛u) 3 Internet v giao th畛cInternet v giao th畛c M畉ng c坦 r畉t nhi畛u thnh ph畉n Fibers Links (li棚n k畉t) Interfaces (c叩c giao di畛n) Switches/routers Large router Coaxial Cable Ethernet card g 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- 4 Wireless card Telephone switchTwisted Cable
  • 2. 2 Internet v giao th畛cInternet v giao th畛c p d畛ng 畛c 叩o tr棚n Internet Khung 畉nh IP http://www.ceiva.com/ 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- Server web nh畛 nh畉t th畉 gi畛i http://www-ccs.cs.umass.edu/~shri/iPic.html i畛n tho畉i Internet 5 Internet v giao th畛cInternet v giao th畛c Internet l g狸 C叩c giao th畛c: i畛u khi畛n vi畛c g畛i v nh畉n c叩c b畉n tin Mobile network Global ISP g畛i v nh畉n c叩c b畉n tin V鱈 d畛: TCP, IP, HTTP, Skype, Ethernet Internet: m畉ng c畛a c叩c m畉ng T鱈nh ph但n c畉p l畛ng l畉o Internet c担ng c畛ng v畛i intranet ri棚ng bi畛t Home network Institutional network Regional ISP 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- C叩c chu畉n Internet RFC: Request for comments IETF: Internet Engineering Task Force http://www.ietf.org/ 6 Internet v giao th畛cInternet v giao th畛c Internet l g狸: quan i畛m d畛ch v畛 C董 s畛 h畉 t畉ng truy畛n th担ng (communication infrastructure) tri畛n( ) khai c叩c 畛ng d畛ng ph但n t叩n Web, VoIP, email, games, e- commerce, chia s畉 file C叩c d畛ch v畛 truy畛n th担ng cung c畉p cho c叩c 畛ng d畛ng: Kh畉 nng chuy畛n d畛 li畛u tin 畉 畛 畛 畛 鱈 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- c畉y t畛 ngu畛n t畛i 鱈ch Truy畛n d畛 li畛u n畛 l畛c t畛i a best effort (kh担ng tin c畉y) 7 Internet v giao th畛cInternet v giao th畛c Giao th畛c (protocol) l g狸? C叩c giao th畛c c畛a con ng動畛i : C叩c giao th畛c c畛a m畉ng: M叩 坦 h畛 kh担 h畉ing動畛i : B但y gi畛 l m畉y gi畛? T担i mu畛n h畛i L畛i gi畛i thi畛u b畉n tin 畉c bi畛t 動畛c g畛i M叩y m坦c ch畛 kh担ng ph畉i con ng動畛i T畉t c畉 c叩c ho畉t 畛ng truy畛n th担ng tr棚n Internet 動畛c qu畉n l箪 th担ng qua c叩c giao th畛c 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- 畉 畛 畛 g i c叩c hnh 畛ng c畛 th畛 khi nh畉n 動畛c b畉n tin hay khi c坦 c叩c s畛 ki畛n kh叩c C叩c giao th畛c 畛nh ngh挑a khu担n d畉ng, ti畉n tr狸nh g畛i v nh畉n tin gi畛a c叩c th畛c th畛 trong m畉ng v 動a ra c叩c hnh 畛ng t動董ng 畛ng th担ng qua c叩c b畉n tin truy畛n v nh畉n 8
  • 3. 3 Internet v giao th畛cInternet v giao th畛c Giao th畛c (protocol) l g狸? Giao th畛c c畛a con ng動畛i v m畉ng m叩y t鱈nh Cho anh Cho em Anh 董i, b但y gi畛 l m畉y gi畛 畉? Y棚u c畉u k畉t n畛iTCP 叩p 畛ng k畉t n畛iTCP <truy畛n file> 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- Q: C嘆n giao th畛c no trong cu畛c s畛ng? B但y gi畛 l 2gi畛 time C叩c giao th畛c 畉c t畉 c炭 ph叩p (syntax) v ng畛 ngh挑a (semantics) Syntax: c叩ch c畉u tr炭c giao th畛c Khu担n d畉ng, tr狸nh t畛 c叩c b畉n tin 動畛c g畛i v nh畉n Semantics: 箪 ngh挑a c畛a c叩c b鱈t C叩ch th畛c ph畉n h畛i c叩c b畉n tin, s畛 ki畛n, v.v. 9 Internet v giao th畛cInternet v giao th畛c Ch動董ng 1: Network Application Architecture C叩c l畛p giao th畛c (Protocol Layers) 畛ng畛ng d畛ngd畛ng Tr狸nh di畛n Phi棚n Application Presentation Session Data Application Header Data Presentation Header Data Session Header T t OSI model 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- V畉n chuy畛n M畉ng Li棚n k畉t d畛 li畛u V畉t l箪 Transport Network Data Link Physical Data Transport Header Data Network Header 0101101010110001 Data Frame Header 10 Internet v giao th畛cInternet v giao th畛c M担 h狸nh ph但n l畛p OSI Application7 Network Routing, Call control IP internetworking Link Transport Network Presentation Session 4 3 6 5 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- 11 Ethernet, FDDI Circuit, ATM, FR switches Physical SONET, T1, T3 Physical Link 1 2 Internet v giao th畛cInternet v giao th畛c M担 h狸nh ph但n l畛p OSI Session, Presentation, Application7 , , Application Data, voice encodings Authentication web/http, ftp, telnet Transport Transport Network Presentation Session 4 3 6 5 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- 12 p Error and congestion control TCP, UDP Physical Link 1 2
  • 4. 4 Internet v giao th畛cInternet v giao th畛c Internet: c叩c l畛p x畉p ch畛ng gi畛ng nh動 畛ng h畛 c叩t Giao th畛c 畛ng 畛ng d畛ng Giao th畛c 畛ng d畛ng Chuy畛n g坦i kh担ng tin c畉y M畉ng l畛p th畉p V畉n chuy畛n tin c畉y 1- M畉ng l畛p th畉p C叩c l畛p v畉t l箪 13 Internet v giao th畛cInternet v giao th畛c Ki畉n tr炭c giao th畛c Internet M担 h狸 h OSI M担 h狸 h TCP/IP B畛 giao th畛c TCP/IP l s畛 k畉t h畛p c畛a c叩c giao th畛c kh叩c nhau 畛 c叩c t畉ng kh叩c nhau, kh担ng L畛p 畛ng d畛ng L畛p tr狸nh di畛n L畛p phi棚n L畛p v畉n chuy畛n T畉ng 畛ng d畛ng T畉ng v畉n chuy畛n M担 h狸nh OSI M担 h狸nh TCP/IP ch畛 c坦 c叩c giao th畛c TCP v IP. M畛i t畉ng l畉i c坦 ch畛c nng ri棚ng. H畉u h畉t c叩c d畛 li畛u truy畛n tr棚n b畛 giao th畛c TCP/IP 畛u k畉t th炭c 坦ng g坦i 畛 d畛 li畛u 畛 IP (IP datagram), tr畛 ARP v RARP 動畛c 坦ng g坦i tr畛c ti畉p 畛 Khung 1- 14 L畛p m畉ng L畛p li棚n k畉t d畛 li畛u L畛p v畉t l箪 T畉ng li棚n m畉ng T畉ng giao di畛n m畉ng L畛p li棚n k畉t d畛 li畛u L畛p v畉t l箪 g坦i tr畛c ti畉p 畛 Khung l畛p li棚n k畉t (Link Level Frames) Internet v giao th畛cInternet v giao th畛c Ki畉n tr炭c giao th畛c Internet RTP SNMPDNSTELNETFTP HTTPPing TCP UDP OSPF BGPSMTP ICMP IP RIP 1- LANs PPPATM FR 10/100BaseT Dedicated B/W: DSx, SONET, ... Circuit-Switched B/W: POTS, SDS, ISDN, ... CDPD Wireless Internet v giao th畛cInternet v giao th畛c Ch動董ng 1: Network Application Architecture Client-server v畛i Peer-to-Peer Ki畉n tr炭c 畛ng d畛ng Internet Client-Server Peer-to-Peer Lai gh辿p Client-Server v畛i Peer-to-Peer 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- 16
  • 5. 5 Internet v giao th畛c Clients v Servers (Kh叩ch/ch畛) Ch動董ng tr狸nh Client Ch畉y tr棚n tr畉m cu畛i Ch動董ng tr狸nh Server Ch畉y tr棚n tr畉m cu畛i畉y 畉 Y棚u c畉u d畛ch v畛 V鱈 d畛: Web browser 畉y 畉 Cung c畉p d畛ch v畛 V鱈 d畛: Web server GET /index.html 1- 17Trang web ang 動畛c x但y d畛ng Internet v giao th畛cInternet v giao th畛c Ki畉n tr炭c Client-server Clients (c叩c m叩y kh叩ch): Truy畛n th担ng v畛i m叩y ch畛 C坦 th畛 動畛c k畉t n畛i kh担ng li棚n t畛c C坦 th畛 c坦 c叩c 畛a ch畛 IP 畛ng Kh担ng truy畛n th担ng tr畛c ti畉p v畛i nhau Server (m叩y ch畛):client/server 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- 18 L tr畉m lu担n 畛 tr畉ng th叩i ho畉t 畛ng C坦 畛a ch畛 IP c畛 畛nh M畛 r畛ng t畉o thnh c叩c server farms Internet v giao th畛cInternet v giao th畛c Ki畉n tr炭c Peer-to-Peer thu畉n Server kh担ng ph畉i lu担n ho畉t 畛ngho畉t 畛ng C叩c h畛 th畛ng 畉u cu畛i b畉t k畛 truy畛n th担ng tr畛c ti畉p C叩c peer 動畛c k畉t n畛i tu畛 箪 v c坦 畛a ch畛 IP thay 畛i peer-peer 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- thay 畛i D畛 m畛 r畛ng nh動ng kh坦 qu畉n l箪 19 Internet v giao th畛cInternet v giao th畛c Lai gh辿p client-server v P2P Skype 畛ng d畛ng voice-over-IP P2P 畛ng d畛ng voice over IP P2P Server t畉p trung: t狸m 畛a ch畛 畉u xa K畉t n畛i client-client : tr畛c ti畉p (kh担ng qua server) Nh畉n tin ng畉n tr棚n m畉ng Chatting gi畛a hai ng動畛i d湛ng l P2P D畛ch v畛 t畉p trung: ph叩t hi畛n v畛 tr鱈/hi畛n di畛n c畛a client 2012-Nguy畛nTh畛ThuH畉ng-PTIT 1- client Ng動畛i d湛ng ng k箪 畛a ch畛 IP c畛a m狸nh v畛i server trung t但m khi l棚n online Ng動畛i s畛 d畛ng k畉t n畛i t畛i trung t但m 畛 t狸m 畛a ch畛 c畛a b畉n ch叩t 20