RFC 3140 · PROPOSED STANDARD · 2001
SUN · 14 JUN 2026
Per Hop Behavior Identification Codes
Overview
RFC 3140, “Per Hop Behavior Identification Codes”, is a Proposed Standard document published in June 2001 by D. Black, S. Brim, B. Carpenter, F. Le Faucheur. It obsoletes RFC 2836. The canonical text is published by the RFC Editor.
Abstract
This document defines a 16 bit encoding mechanism for the identification of differentiated services Per Hop Behaviors in protocol messages. It replaces RFC 2836. [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 3140 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 2001
- RFC 3139 Requirements for Configuration Management of IP-based Networks
- RFC 3141 CDMA2000 Wireless Data Requirements for AAA
- RFC 3138 Extended Assignments in 233/8
- RFC 3142 An IPv6-to-IPv4 Transport Relay Translator
- RFC 3137 OSPF Stub Router Advertisement
- RFC 3143 Known HTTP Proxy/Caching Problems
- RFC 3136 The SPIRITS Architecture
- RFC 3144 Remote Monitoring MIB Extensions for Interface Parameters Monitoring