TCP / IP (6)

• Network Layer : IP v 4

• Addressing: every computer using TCP / IP on the Internet must have a unique IP address: p.q.r.s (4 bytes = 32 bits)

  • p network host nr-of-hosts
  • Class A 1-126 p q.r.s 16,777,214
  • Class B 128-191 p.q r.s 65,534
  • Class C 192-223 p.q.r s 254
  • Class D 224-239 224.0.0.0 - 239.255.255.255
  • Intranet 192 192.168.0.1 - 192.168.255.255

• Masks example:

  • network 128.230.117.0-255 mask 255.255.255.0
  • network 128.230.232.0-63 mask 255.255.255.192

• Broadcast example:

  • network 128.230.117.0-255 broadcast 128.230.117.255
  • network 128.230.232.0-63 broadcast 128.230.232.63

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