RFC 2873 · PROPOSED STANDARD · 2000
MON · 27 JUL 2026
TCP Processing of the IPv4 Precedence Field
Overview
RFC 2873, “TCP Processing of the IPv4 Precedence Field”, is a Proposed Standard document published in June 2000 by X. Xiao, A. Hannan, V. Paxson, E. Crabbe. It has been obsoleted by RFC 9293 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
Abstract
This memo describes a conflict between TCP and DiffServ on the use of the three leftmost bits in the TOS octet of an IPv4 header. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
Read this RFC
The canonical text of RFC 2873 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 2000
- RFC 2872 Application and Sub Application Identity Policy Element for Use with RSVP
- RFC 2874 DNS Extensions to Support IPv6 Address Aggregation and Renumbering
- RFC 2871 A Framework for Telephony Routing over IP
- RFC 2875 Diffie-Hellman Proof-of-Possession Algorithms
- RFC 2870 Root Name Server Operational Requirements
- RFC 2876 Use of the KEA and SKIPJACK Algorithms in CMS
- RFC 2869 RADIUS Extensions
- RFC 2877 5250 Telnet Enhancements