Message Structure

• Message is a long string of bits

  • Show 32 bits or some other number per line
  • Begins with Bit 0
  • In this example,
    • First line has bits 0 through 31
    • Second line has bits 32 through 63

Source Port # (16)

Destination Port # (16)

Sequence Number (32 bits)

Acknowledgement Number (32 bits)

Hdr Len

(4)

Flags (6)

Window Size (16)

Bit 0

Bit 31

Reserved (6)

TCP Segment

More fields follow …..

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