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IP Address

  • It is a 32 bit unique address having information about how to reach a specific host outside the network.
  • It is used to locate a network device connected to other network.
  • Example: 128.11.3.31

IP Address is divided into 5 subclasses

  • An IP address consists of two components: a network ID and a host ID.
  • The network ID identifies the network segment to which the host belongs.
  • The host ID identifies an individual host on some specific network segment.
    Classful Addressing
    Classful Addressing

IPv4 and IPv6

  • IPv4 and IPv6 are internet protocol version 4 and internet protocol version 6, IP version 6 is the new version of Internet Protocol, which is way better than IP version 4 in terms of complexity and efficiency.
  • IPv4 is a 32 bit address but IPv6 is 128 bit address.
  • IPv4 has limited number of IP address but IPv6 has large number of IP address.
  • In IPv4, end-to-end connection integrity is unachievable but in IPv6, end-to-end connection integrity is achievable.
  • IPv4 doesn't provide encryption and authentication but IPv6 provides encryption and authentication.