5. IPv4

• IPv4 Addressing

  • 32 bits

    • a.b.c.d //decimal

    • Network

    • host

  • Types of addresses

    • Network

    • Host

    • Broadcast

  • Network = IP AND SubnetMask

  • Category

    • Private

      • 10.0.0.0/8

      • 172.16.0.0/12

      • 192.168.0.0/16

    • Public

  • loopback address

    • 127.0.0.1

  • link-local address

    • 169.254.0.0/16

  • Classful

    • A, B, C

    • D - Multicast

  • Classless

    • IP + Subnet Mask

  • Internet Service Provider (ISP)

  • ping

    • ICMP Echo Request

    • Echo Reply

  • Traceroute (tracert)

• Subnetting

  • divide network to smaller networks

  • network bit = 32 - host bit

  • Number of usable host = 2^hostbit - 2

  • Variable Length Subnet Mask (VLSM)