RFC 3639 · INFORMATIONAL · 2003
WED · 29 JUL 2026
Considerations on the use of a Service Identifier in Packet Headers
Overview
RFC 3639, “Considerations on the use of a Service Identifier in Packet Headers”, is an Informational document published in October 2003 by M. St. Johns, G. Huston, IAB. The canonical text is published by the RFC Editor.
Abstract
This memo describes some considerations relating to the use of IP protocol number fields and payload protocol (e.g., TCP) port fields to identify particular services that may be associated with that port number or protocol number.
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 3639 is hosted at rfc-editor.org. Available in TXT,HTML.
Other RFCs from 2003
- RFC 3638 Applicability Statement for Reclassification of RFC 1643 to Historic Status
- RFC 3640 RTP Payload Format for Transport of MPEG-4 Elementary Streams
- RFC 3637 Definitions of Managed Objects for the Ethernet WAN Interface Sublayer
- RFC 3641 Generic String Encoding Rules for ASN.1 Types
- RFC 3636 Definitions of Managed Objects for IEEE 802.3 Medium Attachment Units
- RFC 3642 Common Elements of Generic String Encoding Rules Encodings
- RFC 3635 Definitions of Managed Objects for the Ethernet-like Interface Types
- RFC 3643 Fibre Channel Frame Encapsulation