1. I protocolli di trasporto e di servizio della famiglia TCP/IP
Capitolo 7
I protocolli di trasporto e di servizio della famiglia TCP/IP

2. Porta numero
2523
4322

3. Acknowledgement Number
Options
PAD
Checksum
Urgent Pointer
HLEN
Reser.
Code
Bits
Window
Acknowledgement Number
Sequence Number
Source Port
Destination Port
32 bit

4.    130.192.3.29 130.192.5.33 Client Server SYN,SN=18421174
SYN,ACK,SN= ,AN=
SYN,ACK,SN= ,AN=
2351 80
AN: Acknowledgment Number
SN: Sequence Number
Client

5.     130.192.2.53 130.192.5.33 Client Server FIN,SN=41635319
4549
Client
FIN,ACK,SN= ,AN=
FIN,ACK,SN= ,AN=
FIN,SN=
FIN,SN= ,AN=
Server
AN: Acknowledgment Number
SN: Sequence Number
110

6. Byte trasmesso di cui è nota l’avvenuta consegna
Byte trasmesso sulla cui consegna non si hanno informazioni
Byte non ancora trasmesso
Byte non ancora trasmissibile
Finestra di trasmissione 3 4 8 11 18 30
Finestra di trasmissione dopo la ricezione di un messaggio con Acknowledgment Number=11

7. Root edu il it com ucla njit polito cnr eni ac co mi gs cnn kodak bn
www
netgroup
pop
ftp
mail
haifa
technion
lynx
icq

8. Root tilie.polito.it 132.68.7.8 edu il it com ac co mi gs cnn kodak bn
haifa
technion
lynx
icq
tilie.polito.it
ftp.technion.ac.il?
www
ftp
mail
polito
cnr
eni
netgroup
pop 2 1 3 4 6 5 7 8 9 10

9. Ho bisogno di configurazione Ecco il tuo indirizzo, netmask ...
DHCP Client
DHCP Server
Base dati di
indirizzi IP
Ho bisogno di configurazione
Ecco il tuo indirizzo, netmask ...

10.     DHCPdiscover DHCPoffer DHCPrequest DHCPack 000102-0CF9AA
CF9AA
00D0B7-4D9EB3

11. (routing dinamico su rete magliata)
Router Y
Router X
WAN
(routing dinamico su rete magliata)
Host
Def. GTW
Host
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. (routing dinamico su rete magliata)
Router Y
Standby
Router X
Active
WAN
(routing dinamico su rete magliata)
Host
Def. GTW
Host
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. Router Y
Standby
Host
Def. GTW
Host
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
Host
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. Router Y
Active 2
Standby 1
Host
Def. GTW
Host
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
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. Version
Op Code
State
Hello-time
Hold-time
Priority
Group
Reserved
Authentication Data
Virtual IP Address
HEADER
MAC
FCS IP
UDP
Pacchetto HSRP

16. Authentication Data (1) Authentication Data (2)
Vers = 2
Virtual Router ID
Priority
Count Ip Addrs
Auth Type
Advers Interval
Checksum
Authentication Data (1)
Authentication Data (2)
Virtual IP Address 1
HEADER
MAC
FCS IP
Pacchetto VRRP
Type = 1 .
Virtual IP Address n

17. (routing dinamico su rete magliata )
Router Y
Backup o
Standby
Router X
Master o
Active
WAN
(routing dinamico su rete magliata )

18. (routing dinamico su rete magliata )
Router Y
Master o
Active
Router X
Init
WAN
(routing dinamico su rete magliata )
guasto

19. (routing dinamico su rete magliata )
Router Y
Init
Router X
Master o
Active
WAN
(routing dinamico su rete magliata )
guasto

20. (routing dinamico su rete magliata )
Router Y
Master o
Active
Router X
WAN
(routing dinamico su rete magliata )
guasto

21. (routing dinamico su rete magliata )
Router Y
Backup o
Standby
Router X
Master o
Active
WAN
(routing dinamico su rete magliata )
RSTP/STP