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4. Van Jacobson TCP/IP header compression Connected: An Internet Encyclopedia
4. Van Jacobson TCP/IP header compression

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Up: Requests For Comments
Up: RFC 1332
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Next: 4.1. Configuration Option Format

4. Van Jacobson TCP/IP header compression

4. Van Jacobson TCP/IP header compression

Van Jacobson TCP/IP header compression reduces the size of the TCP/IP headers to as few as three bytes. This can be a significant improvement on slow serial lines, particularly for interactive traffic.

The IP-Compression-Protocol Configuration Option is used to indicate the ability to receive compressed packets. Each end of the link must separately request this option if bi-directional compression is desired.

The PPP Protocol field is set to the following values when transmitting IP packets:

   Value (in hex)


   0021      Type IP.  The IP protocol is not TCP, or the packet is a
             fragment, or cannot be compressed.

   002d      Compressed TCP.  The TCP/IP headers are replaced by the
             compressed header.

   002f      Uncompressed TCP.  The IP protocol field is replaced by
             the slot identifier.


Next: 4.1. Configuration Option Format

Connected: An Internet Encyclopedia
4. Van Jacobson TCP/IP header compression

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