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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 © 2002 - 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 © 2002 - The McGraw-Hill Companies srl Porta numero 2523 Porta numero 4322

3 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © 2002 - 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 © 2002 - The McGraw-Hill Companies srl Server SYN,SN=18421174 SYN,ACK,SN=1249155681,AN=18421175 SYN,ACK,SN=18421175,AN=1249155682 130.192.5.33 2351 130.192.3.29 80 AN: Acknowledgment Number SN: Sequence Number Client

5 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © 2002 - The McGraw-Hill Companies srl 130.192.2.53 130.192.5.33 4549 Client FIN,ACK,SN=2541997339,AN=41635320 FIN,ACK,SN=41635320,AN=2541997340 FIN,SN=41635319 FIN,SN=2541997339,AN=41635320 Server AN: Acknowledgment Number SN: Sequence Number 110

6 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © 2002 - 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 348111830 Finestra di trasmissione dopo la ricezione di un messaggio con Acknowledgment Number =11 348111830

7 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © 2002 - 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 © 2002 - The McGraw-Hill Companies srl 132.68.7.8 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 132.68.7.8 2 1 3 4 6 5 7 8 9 10

9 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © 2002 - 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 © 2002 - The McGraw-Hill Companies srl DHCPoffer DHCPdiscover DHCPack DHCPrequest 192.168.10.105 000102-0CF9AA 195.31.235.220 00D0B7-4D9EB3

11 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © 2002 - The McGraw-Hill Companies srl Router YRouter X WAN (routing dinamico su rete magliata) Host 10.1.1.10 Def. GTW 10.1.1.5 Host 10.1.1.24 Def. GTW 10.1.1.5 10.1.1.1 10.1.1.2 Router-X> interface ethernet 0 Router-X> Ip address 10.1.1.1 255.255.255.0 Router-X> standby 24 ip 10.1.1.5 HSRP Group 24 Router-Y> interface ethernet 0 Router-Y> Ip address 10.1.1.2 255.255.255.0 Router-Y> standby 24 ip 10.1.1.5

12 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © 2002 - The McGraw-Hill Companies srl Router Y Standby Router X Active WAN (routing dinamico su rete magliata) Host 10.1.1.10 Def. GTW 10.1.1.5 Host 10.1.1.24 Def. GTW 10.1.1.5 10.1.1.1 10.1.1.5 10.1.1.2 Router-X> interface ethernet 0 Router-X> Ip address 10.1.1.1 255.255.255.0 Router-X> standby 24 preempt Router-X> standby 24 priority 105 Router-X> standby 24 ip 10.1.1.5 HSRP Group 24 Router-Y> interface ethernet 0 Router-Y> Ip address 10.1.1.2 255.255.255.0 Router-Y> standby 24 preempt Router-Y> standby 24 ip 10.1.1.5

13 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © 2002 - The McGraw-Hill Companies srl Router Y Standby Host 10.1.1.28 Def. GTW 10.1.1.10 Host 10.1.1.24 Def. GTW 10.1.1.10 10.1.1.5 10.1.1.10 10.1.1.6 R-X>interface ethernet 0 R-X-if>Ip address 10.1.1.5 255.255.255.0 R-X-if>standby 1 preempt R-X-if>standby 1 priority 105 R-X-if>standby 1 ip 10.1.1.10 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 10.6.2.5 255.255.255.0 HSRP Group 1 Host 10.1.1.25 Def. GTW 10.1.1.10 Host 10.1.1.31 Def. GTW 10.1.1.10 R-Y>interface ethernet 0 R-Y-if>Ip address 10.1.1.6 255.255.255.0 R-Y-if>standby 1 preempt R-Y-if>standby 1 ip 10.1.1.10 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 10.6.7.6 255.255.255.0 Router Z S0=10.6.2.5S0=10.6.7.6 Router X Active

14 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © 2002 - The McGraw-Hill Companies srl Router Y Active 2 Standby 1 Host 10.1.1.28 Def. GTW 10.1.1.10 Host 10.1.1.24 Def. GTW 10.1.1.10 10.1.1.5 10.1.1.10 10.1.1.6 10.1.1.20 R-X>interface ethernet 0 R-X-if>Ip address 10.1.1.5 255.255.255.0 R-X-if>standby 1 preempt R-X-if>standby 1 ip 10.1.1.10 R-X-if>standby 1 track Serial 0 R-X-if>standby 2 preempt R-X-if>standby 2 ip 10.1.1.20 R-X-if>standby 2 track serial 0 R-X-if>standby 2 priority 95 HSRP Group 1 HSRP Group 2 Host 10.1.1.205 Def. GTW 10.1.1.20 Host 10.1.1.206 Def. GTW 10.1.1.20 R-Y>interface ethernet 0 R-Y-if>Ip address 10.1.1.6 255.255.255.0 R-Y-if>standby 1 preempt R-Y-if>standby 1 ip 10.1.1.10 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 10.1.1.20 R-Y-if>standby 2 track serial 0 Router Z S0=10.6.2.5S0=10.6.7.6 Router X Active 1 Standby 2

15 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © 2002 - 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 © 2002 - 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 = 1...... Virtual IP Address n

17 Switched LAN - Mario Baldi, Pietro Nicoletti Copyright © 2002 - 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 © 2002 - 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 © 2002 - 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 © 2002 - 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 © 2002 - 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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