Diameter Applications Design Guidelines
draft-ietf-dime-app-design-guide-14

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Last updated 2012-04-01
Replaces draft-fajardo-dime-app-design-guide
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Diameter Maintenance and Extensions                       L. Morand, Ed.
(DIME)                                                       Orange Labs
Internet-Draft                                                V. Fajardo
Intended status: Informational
Expires: October 3, 2012                                   H. Tschofenig
                                                  Nokia Siemens Networks
                                                           April 1, 2012

                Diameter Applications Design Guidelines
                  draft-ietf-dime-app-design-guide-14

Abstract

   The Diameter Base protocol provides facilities for protocol
   extensibility enabling to define new Diameter applications or modify
   existing applications.  This document is a companion document to the
   Diameter Base protocol that further explains and clarifies the rules
   to extend the Diameter Base protocol.  It is meant as a guidelines
   document and therefore it does not add, remove or change existing
   rules.

Morand, et al.           Expires October 3, 2012                [Page 1]
Internet-Draft   Diameter Applications Design Guidelines      April 2012

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on October 3, 2012.

Copyright Notice

   Copyright (c) 2012 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
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Morand, et al.           Expires October 3, 2012                [Page 2]
Internet-Draft   Diameter Applications Design Guidelines      April 2012

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  5
   3.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
   4.  Reusing existing Diameter applications . . . . . . . . . . . .  8
     4.1.  Adding a new command . . . . . . . . . . . . . . . . . . .  8
     4.2.  Deleting a command . . . . . . . . . . . . . . . . . . . .  9
     4.3.  Reusing existing commands  . . . . . . . . . . . . . . . .  9
       4.3.1.  Adding AVPs to a command . . . . . . . . . . . . . . . 10
       4.3.2.  Deleting AVPs from a Command . . . . . . . . . . . . . 11
     4.4.  Reusing existing AVPs  . . . . . . . . . . . . . . . . . . 12
       4.4.1.  Setting of the AVP flags . . . . . . . . . . . . . . . 12
       4.4.2.  Reuse of AVP of type Enumerated  . . . . . . . . . . . 12
   5.  Rules for new Applications . . . . . . . . . . . . . . . . . . 13
     5.1.  Use of Application-Id in a Message . . . . . . . . . . . . 13
     5.2.  Application Specific Session State Machine . . . . . . . . 14
   6.  End-to-End Applications Capabilities Exchange  . . . . . . . . 15
   7.  Diameter Accounting Support  . . . . . . . . . . . . . . . . . 16
   8.  Generic Diameter Extensions  . . . . . . . . . . . . . . . . . 18
   9.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 20
   10. Security Considerations  . . . . . . . . . . . . . . . . . . . 21
   11. Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 22
   12. Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 23
   13. References . . . . . . . . . . . . . . . . . . . . . . . . . . 24
     13.1. Normative References . . . . . . . . . . . . . . . . . . . 24
     13.2. Informative References . . . . . . . . . . . . . . . . . . 24
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 26
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