RFC 2638 · INFORMATIONAL · 1999
SUN · 14 JUN 2026
A Two-bit Differentiated Services Architecture for the Internet
Overview
RFC 2638, “A Two-bit Differentiated Services Architecture for the Internet”, is an Informational document published in July 1999 by K. Nichols, V. Jacobson, L. Zhang. The canonical text is published by the RFC Editor.
Abstract
This document presents a differentiated services architecture for the internet. This memo provides information for the Internet community.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
Read this RFC
The canonical text of RFC 2638 is hosted at rfc-editor.org. Available in TXT,PS,PDF,HTML.
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