IP addresses

• IP Addresses used when sending data between TCP/IP networks (e.g. over internet)
• IP addresses are assigned either manually or automatically before the device can access the network
• Two versions of IP addresses

  IPv4 (32 bits)

  IPv6 (128 bits)
• IPv6 created because of increasing number of devices that need unique IP address
• IPv4 has over 4 billion IP addresses, IPv6 has over 340 trillion IP addresses
• IPv6 addresses are split into 16-bit chunks, each one given a hexadecimal number
• IPv4 addresses are split into 8- bit chunks, each one given as a denary number
• used to identify device on network

  temporary address
• differnt network or differnt day may lead to change in IP address

  unlike MAC address which stays same no matter what
• IP address will be used by router

  routing data out or into internet from or to device