Internet & networking · 1981
RFC 791: Internet Protocol
Request for Comments 791 · Excerpt · September 1981
Section 3.1 of the Internet Protocol specification, which defines each field of the IPv4 header and its options.
Read the text The whole poster as a web page
Part of the series The origins of the Internet.
- Print from
- A1
- License
- Free reproduction (RFC Editor)
- Source
- rfc-editor.org
- Retrieved
- 26 September 2026
- Language
- English
- Rights holder
- Jon Postel, Editor, Information Sciences Institute, 1981
Theme
Download
- A seriesPrints at A0, A1, A2 or A3
- 50 × 70 cm
- 60 × 80 cm
US formats
Each one laid out on its own. At Letter and Tabloid the body of a long text prints under 8 pt: they suit short texts, or a copy to read up close.
- Letter8.5 × 11 in
- Tabloid11 × 17 in
- 18 × 24 in
- 24 × 36 in
Print it Which size, paper or aluminium, which file to send
Every Internet & networking poster, in the A, 50 × 70 and 60 × 80 cm formats and every theme, as one zip from the latest release, and in the US formats as another.
Print from A1: the smallest A size at which the body text is at least 8 pt.
Wallpaper
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Edition
RFC Editor plain-text edition. Excerpt: section 3.1 in full (3238 words, checked word for word), with the preface and the three references that the section cites; page headers and footers left out, drawings reproduced unchanged.
Rights
All RFCs may be freely reproduced and translated (unmodified).
RFC Editor, https://www.rfc-editor.org/faq/. RFC 791 itself carries no copyright notice.
