Figure 61 Growth pattern of Internet hosts

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Figure 6-1 Growth pattern of Internet hosts
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Figure 6-2 The Internet Hierarchy
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Figure 6-3 A Router joining three networks
Internet
Switch
Router
Switch
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Figure 6-5 Distance Vector vs. Link State
Link State vs Distance Vector
Pure Distance Vector
Destination
X
Destination unreachable
Cost 5
B
A
Cost 3
Cost 10
C
D
Cost 1
Source
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Figure 6-6 Interior and Exterior Protocols
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Figure 6-7 The Anatomy of an IPv4 address
Octet 1
First Octet Binary Range values
First Octet Decimal range values
Octet 4
Octet 3
Octet 2
Class
Network
00000000 - 01111111
0 - 127
Host
Host
Host
A
Network
10000000 - 10111111
128 - 191
Host
Host
Network
B
Network
11000000 - 11011111
192 - 223
Host
Network
Network
C
NNNNHHHH
11100000 - 11101111
224 - 239
Host
Host
Host
D
NNNNHHHH
11110000 - 11111111
Host
Host
Host
240 - 255
E
Octet 8 bits N network portion of the IP
address H host portion of the IP address
Examples
10.212.215.33 Class A 128.219.34.254
Class B 199.111.6.200 Class C 224.89.67.222
Class D 242.224.128.0 Class E
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Figure 6-8 Network Address Translation
PUBLIC Network
Your IP address 172.16.20.33
Inside IP address 172.16.20.1
PRIVATE Network
NAT Router
OUT
outside IP address 62.134.17.252
LAN
A NAT router translates IP addresses coming into
and leaving the private network
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Figure 6-9 A firewall using DMZ
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Figure 6-10 Firewalls using Protocol Switching
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Chapter 6
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Figure 6-4 Client Server
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Figure 6-6 Interior and Exterior Protocols