IPv4 (Internet Protocol version 4)

32 bits

VER

IHL

Type of Service

Total Length

Identifier

Flags

Fragment Offset

Time to Live

Protocol

Header Checksum

Source IP Address

Destination IP Address

Options + Padding

• HF (High Frequency)
• high bit-rate digital subscriber line (HDSL)
• high capacity voice (HCV)
• high-cost area
• high definition television (HDTV)
• high density bipolar order 3 (HDB3)
• high frequency (HF)
• High-Level Data Link Control (HDLC)
• high-order mode
• high-pass filter
• High Performance Parallel Interface (HIPPI)
• high speed
• high-speed channel (H channel)
• High-Speed Circuit Switched Data (HSCSD)
• High Speed Downlink Packet Access (HSDPA)
• High Speed Uplink Packet Access (HSUPA)
• high-tier
• high voltage (HV)
• HiperACCESS (High performance radio ACCESS)
• HiperLAN/1 (High performance radio Local Area Network version 1)
• HiperLAN2 (High performance radio Local Area Network version 2)
• HiperMAN (High performance radio Metropolitan Area Network)
• HIPPI (HIgh Performance Parallel Interface)
• Hockham, George
• hold