Message Structure

• Message is a long string of bits

  • IP Packet message structure:

Total Length in bytes (16)

Time to Live (8)

Options (if any)

Bit 0

Bit 31

Version

(4)

Hdr Len

(4)

TOS (8)

Indication (16 bits)

Flags (3)

Fragment Offset (13)

Source IP Address

Destination IP Address

Header Checksum (16)

Protocol (8)

PAD

Data Field

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