Diameter Applications Design Guidelines
RFC 7423
| Document | Type |
RFC - Best Current Practice
(November 2014; No errata)
Also known as BCP 193
|
|
|---|---|---|---|
| Authors | Lionel Morand , Victor Fajardo , Hannes Tschofenig | ||
| Last updated | 2015-10-14 | ||
| Replaces | draft-fajardo-dime-app-design-guide | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Jouni Korhonen | ||
| Shepherd write-up | Show (last changed 2014-04-18) | ||
| IESG | IESG state | RFC 7423 (Best Current Practice) | |
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Benoît Claise | ||
| Send notices to | (None) | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | No IANA Actions | ||
Internet Engineering Task Force (IETF) L. Morand, Ed.
Request for Comments: 7423 Orange Labs
BCP: 193 V. Fajardo
Category: Best Current Practice Fluke Networks
ISSN: 2070-1721 H. Tschofenig
November 2014
Diameter Applications Design Guidelines
Abstract
The Diameter base protocol provides facilities for protocol
extensibility enabling the definition of new Diameter applications or
modification of existing applications. This document is a companion
document to the Diameter base protocol that further explains and
clarifies the rules to extend Diameter. Furthermore, this document
provides guidelines to Diameter application designers reusing/
defining Diameter applications or creating generic Diameter
extensions.
Status of This Memo
This memo documents an Internet Best Current Practice.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
BCPs is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc7423.
Morand, et al. Best Current Practice [Page 1]
RFC 7423 Diameter Applications Design Guidelines November 2014
Copyright Notice
Copyright (c) 2014 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
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the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
10, 2008. The person(s) controlling the copyright in some of this
material may not have granted the IETF Trust the right to allow
modifications of such material outside the IETF Standards Process.
Without obtaining an adequate license from the person(s) controlling
the copyright in such materials, this document may not be modified
outside the IETF Standards Process, and derivative works of it may
not be created outside the IETF Standards Process, except to format
it for publication as an RFC or to translate it into languages other
than English.
Morand, et al. Best Current Practice [Page 2]
RFC 7423 Diameter Applications Design Guidelines November 2014
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. Reusing Existing Diameter Applications . . . . . . . . . . . 6
4.1. Adding a New Command . . . . . . . . . . . . . . . . . . 7
4.2. Deleting an Existing Command . . . . . . . . . . . . . . 8
4.3. Reusing Existing Commands . . . . . . . . . . . . . . . . 8
4.3.1. Adding AVPs to a Command . . . . . . . . . . . . . . 8
4.3.2. Deleting AVPs from a Command . . . . . . . . . . . . 10
4.3.3. Changing the Flag Settings of AVP in Existing
Commands . . . . . . . . . . . . . . . . . . . . . . 11
4.4. Reusing Existing AVPs . . . . . . . . . . . . . . . . . . 11
4.4.1. Setting of the AVP Flags . . . . . . . . . . . . . . 11
4.4.2. Reuse of AVP of Type Enumerated . . . . . . . . . . . 12
5. Defining New Diameter Applications . . . . . . . . . . . . . 12
5.1. Introduction . . . . . . . . . . . . . . . . . . . . . . 12
5.2. Defining New Commands . . . . . . . . . . . . . . . . . . 12
5.3. Use of Application Id in a Message . . . . . . . . . . . 13
5.4. Application-Specific Session State Machines . . . . . . . 14
5.5. Session-Id AVP and Session Management . . . . . . . . . . 14
5.6. Use of Enumerated Type AVPs . . . . . . . . . . . . . . . 15
5.7. Application-Specific Message Routing . . . . . . . . . . 17
5.8. Translation Agents . . . . . . . . . . . . . . . . . . . 18
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