3. How to deliver PACKETs

  1. Overall concept of IP packet delivering
    • From a host to a host, not end-to-end
    • What is a packet?
      • Logically a packet is a byte array.
      • [Review]
        • What are two components of a packet?
        • What does packet delivering mean?
    • We will study the physical layer first, and then the data link layer and the network layer for the last.
    • [Review]
      • What layers are included in packet delivering?    Physical, data link, and network layers
      • What kind of data is delivered from a node to a node in the physical layer?
      • What kind of data is delivered from a node to a node in the data link layer?
      • What kind of data is delivered from a host to a host in the network layer?
  2. How to deliver bits
  3. How to deliver data-like layer frames
  4. How to deliver IP packets
  5. How to deliver TCP segments and UDP datagrams
  6. How to deliver HTTP messages