BCP 14

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RFC 2119: BCP 14: Key words for use in RFCs to Indicate Requirement Levels

Best Current Practice

S. Bradner

March 1997
IETF publication
General Area

Abstract

In many standards track documents several words are used to signify the requirements in the specification. These words are often capitalized. This document defines these words as they should be interpreted in IETF documents. This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements.

Abstract

RFC 8174: BCP 14: Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words

Best Current Practice

B. Leiba

May 2017
IETF publication
General Area

Abstract

RFC 2119 specifies common key words that may be used in protocol specifications. This document aims to reduce the ambiguity by clarifying that only UPPERCASE usage of the key words have the defined special meanings.

BCP 14

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RFC 2119: BCP 14: Key words for use in RFCs to Indicate Requirement Levels

Abstract

Abstract

RFC 8174: BCP 14: Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words

Abstract

Abstract