114
Gambar 2.8. IPv4 Header
(NASA-Aeronautical Related Applications Using ATN and TCP/IP Research Report)
Tiga pilihan utama dari tiga cara tradeoff antara low-delay, high-
reliability, dan
highthroughput.
•
Bits 0-2: Precedence
•
Bit 3: 0 = Normal Delay, 1 = Low Delay.
•
Bit 4: 0 = Normal Throughput, 1 = High Throughput.
•
Bit 5: 0 = Normal Reliability, 1 = High Reliability.
•
Bits 6-7: Reserved for Future Use.
Bit ke 0 -2 dapat diatur untuk mengindikasikan
precedence
levels yaitu :
•
111 - Network Control
•
110 - Internetwork Control
•
101 - CRITIC/ECP
•
100 - Flash Override
•
011 - Flash
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