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Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © 2002 - The McGraw-Hill Companies srl Capitolo 7 I protocolli di trasporto e di servizio della.

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Presentation on theme: "Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © 2002 - The McGraw-Hill Companies srl Capitolo 7 I protocolli di trasporto e di servizio della."— Presentation transcript:

1 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Capitolo 7 I protocolli di trasporto e di servizio della famiglia TCP/IP

2 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Porta numero 2523 Porta numero 4322

3 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl OptionsPAD Checksum Urgent Pointer HLENReser. Code Bits Window Acknowledgement Number Sequence Number Source Port Destination Port 32 bit

4 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Server SYN,SN= SYN,ACK,SN= ,AN= SYN,ACK,SN= ,AN= AN: Acknowledgment Number SN: Sequence Number Client

5 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Client FIN,ACK,SN= ,AN= FIN,ACK,SN= ,AN= FIN,SN= FIN,SN= ,AN= Server AN: Acknowledgment Number SN: Sequence Number 110

6 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Byte trasmesso di cui è nota lavvenuta consegna Byte trasmesso sulla cui consegna non si hanno informazioni Byte non ancora trasmesso Byte non ancora trasmissibile Finestra di trasmissione Finestra di trasmissione dopo la ricezione di un messaggio con Acknowledgment Number =

7 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Root edu il it com edu ucla njit it polito cnr eni il ac co mi com gs cnn kodak bn polito www netgroup pop eni www ftp mail ac haifa technion co lynx icq

8 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Root edu il it com il ac co mi com gs cnn kodak bn ac haifa technion co lynx icq tilie.polito.it ftp.technion.ac.il? technion www ftp mail ftp.technion.ac.il? it polito cnr eni polito www netgroup pop eni www ftp mail

9 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl DHCP Client DHCP Server Base dati di indirizzi IP Ho bisogno di configurazione Ecco il tuo indirizzo, netmask...

10 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl DHCPoffer DHCPdiscover DHCPack DHCPrequest CF9AA D0B7-4D9EB3

11 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Router YRouter X WAN (routing dinamico su rete magliata) Host Def. GTW Host Def. GTW Router-X> interface ethernet 0 Router-X> Ip address Router-X> standby 24 ip HSRP Group 24 Router-Y> interface ethernet 0 Router-Y> Ip address Router-Y> standby 24 ip

12 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Router Y Standby Router X Active WAN (routing dinamico su rete magliata) Host Def. GTW Host Def. GTW Router-X> interface ethernet 0 Router-X> Ip address Router-X> standby 24 preempt Router-X> standby 24 priority 105 Router-X> standby 24 ip HSRP Group 24 Router-Y> interface ethernet 0 Router-Y> Ip address Router-Y> standby 24 preempt Router-Y> standby 24 ip

13 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Router Y Standby Host Def. GTW Host Def. GTW R-X>interface ethernet 0 R-X-if>Ip address R-X-if>standby 1 preempt R-X-if>standby 1 priority 105 R-X-if>standby 1 ip R-X-if>standby 1 track Serial 0 R-X-if>no shutdown R-X-if>exit R-X> interface serial 0 R-X-if>Ip address HSRP Group 1 Host Def. GTW Host Def. GTW R-Y>interface ethernet 0 R-Y-if>Ip address R-Y-if>standby 1 preempt R-Y-if>standby 1 ip R-Y-if>standby 1 track Serial 0 R-Y-if>no shutdown R-Y-if>exit R-Y> interface serial 0 R-Y-if>Ip address Router Z S0= S0= Router X Active

14 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Router Y Active 2 Standby 1 Host Def. GTW Host Def. GTW R-X>interface ethernet 0 R-X-if>Ip address R-X-if>standby 1 preempt R-X-if>standby 1 ip R-X-if>standby 1 track Serial 0 R-X-if>standby 2 preempt R-X-if>standby 2 ip R-X-if>standby 2 track serial 0 R-X-if>standby 2 priority 95 HSRP Group 1 HSRP Group 2 Host Def. GTW Host Def. GTW R-Y>interface ethernet 0 R-Y-if>Ip address R-Y-if>standby 1 preempt R-Y-if>standby 1 ip R-Y-if>standby 1 track Serial 0 R-Y-if>standby 1 priority 95 R-Y-if>standby 2 preempt R-Y-if>standby 2 ip R-Y-if>standby 2 track serial 0 Router Z S0= S0= Router X Active 1 Standby 2

15 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl VersionOp CodeStateHello-time Hold-timePriorityGroupReserved Authentication Data Virtual IP Address HEADER MAC FCS HEADER IP HEADER UDP Pacchetto HSRP

16 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Vers = 2Virtual Router IDPriorityCount Ip Addrs Auth TypeAdvers IntervalChecksum Authentication Data (1) Authentication Data (2) Virtual IP Address 1 HEADER MAC FCS HEADER IP Pacchetto VRRP Type = Virtual IP Address n

17 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Router Y Backup o Standby Router X Master o Active WAN (routing dinamico su rete magliata )

18 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Router Y Master o Active Router X Init WAN (routing dinamico su rete magliata ) guasto

19 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Router Y Init Router X Master o Active WAN (routing dinamico su rete magliata ) guasto

20 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Router Y Master o Active Router X Master o Active WAN (routing dinamico su rete magliata ) guasto

21 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © The McGraw-Hill Companies srl Router Y Backup o Standby Router X Master o Active WAN (routing dinamico su rete magliata ) RSTP/STP


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