Diameter Load Information Conveyance
RFC 8583

Document Type RFC - Proposed Standard (August 2019; No errata)
Last updated 2019-08-15
Stream IETF
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Reviews
Stream WG state Submitted to IESG for Publication
Document shepherd Jouni Korhonen
Shepherd write-up Show (last changed 2016-12-06)
IESG IESG state RFC 8583 (Proposed Standard)
Consensus Boilerplate Yes
Telechat date
Responsible AD Ignas Bagdonas
Send notices to "Jouni Korhonen" <jouni.nospam@gmail.com>
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
Internet Engineering Task Force (IETF)                       B. Campbell
Request for Comments: 8583                               S. Donovan, Ed.
Category: Standards Track                                         Oracle
ISSN: 2070-1721                                              JJ. Trottin
                                                                   Nokia
                                                             August 2019

                  Diameter Load Information Conveyance

Abstract

   RFC 7068 describes requirements for Overload Control in Diameter.
   This includes a requirement to allow Diameter nodes to send "load"
   information, even when the node is not overloaded.  The base solution
   defined in RFC 7683 (Diameter Overload Information Conveyance (DOIC))
   describes a mechanism meeting most of the requirements but does not
   currently include the ability to send load information.  This
   document defines a mechanism for the conveying of Diameter load
   information.

Status of This Memo

   This is an Internet Standards Track document.

   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
   Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/rfc8583.

Campbell, et al.             Standards Track                    [Page 1]
RFC 8583                      Diameter Load                  August 2019

Copyright Notice

   Copyright (c) 2019 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
   (https://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.

Campbell, et al.             Standards Track                    [Page 2]
RFC 8583                      Diameter Load                  August 2019

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Terminology and Abbreviations . . . . . . . . . . . . . . . .   4
   3.  Conventions Used in This Document . . . . . . . . . . . . . .   5
   4.  Background  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     4.1.  Differences between Load and Overload Information . . . .   5
     4.2.  How Is Load Information Used? . . . . . . . . . . . . . .   6
   5.  Solution Overview . . . . . . . . . . . . . . . . . . . . . .   7
     5.1.  Theory of Operation . . . . . . . . . . . . . . . . . . .   9
   6.  Load-Mechanism Procedures . . . . . . . . . . . . . . . . . .  11
     6.1.  Reporting-Node Behavior . . . . . . . . . . . . . . . . .  11
       6.1.1.  Endpoint Reporting-Node Behavior  . . . . . . . . . .  11
       6.1.2.  Agent Reporting-Node Behavior . . . . . . . . . . . .  12
     6.2.  Reacting-Node Behavior  . . . . . . . . . . . . . . . . .  13
     6.3.  Extensibility . . . . . . . . . . . . . . . . . . . . . .  14
     6.4.  Addition and Removal of Nodes . . . . . . . . . . . . . .  14
   7.  Attribute-Value Pairs . . . . . . . . . . . . . . . . . . . .  15
     7.1.  Load AVP  . . . . . . . . . . . . . . . . . . . . . . . .  15
     7.2.  Load-Type AVP . . . . . . . . . . . . . . . . . . . . . .  15
     7.3.  Load-Value AVP  . . . . . . . . . . . . . . . . . . . . .  15
     7.4.  SourceID AVP  . . . . . . . . . . . . . . . . . . . . . .  15
     7.5.  Attribute-Value Pair Flag Rules . . . . . . . . . . . . .  16
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  16
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  16
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  17
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  17
     10.2.  Informative References . . . . . . . . . . . . . . . . .  17
   Appendix A.  Topology Scenarios . . . . . . . . . . . . . . . . .  18
     A.1.  No Agent  . . . . . . . . . . . . . . . . . . . . . . . .  18
     A.2.  Single Agent  . . . . . . . . . . . . . . . . . . . . . .  18
     A.3.  Multiple Agents . . . . . . . . . . . . . . . . . . . . .  19
     A.4.  Linked Agents . . . . . . . . . . . . . . . . . . . . . .  19
     A.5.  Shared Server Pools . . . . . . . . . . . . . . . . . . .  21
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