Diameter Agent Overload and the Peer Overload Report
RFC 8581

Document Type RFC - Proposed Standard (August 2019; No errata)
Updates RFC 7683
Last updated 2019-08-15
Replaces draft-donovan-dime-agent-overload
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 8581 (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)                        S. Donovan
Request for Comments: 8581                                        Oracle
Updates: 7683                                                August 2019
Category: Standards Track
ISSN: 2070-1721

          Diameter Agent Overload and the Peer Overload Report

Abstract

   This specification documents an extension to the Diameter Overload
   Indication Conveyance (DOIC), a base solution for Diameter overload
   defined in RFC 7683.  The extension defines the Peer Overload report
   type.  The initial use case for the peer report is the handling of
   occurrences of overload of a Diameter Agent.

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/rfc8581.

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.

Donovan                      Standards Track                    [Page 1]
RFC 8581         Diameter Agent Overload and Peer Report     August 2019

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   4
   3.  Terminology and Abbreviations . . . . . . . . . . . . . . . .   4
   4.  Peer-Report Use Cases . . . . . . . . . . . . . . . . . . . .   5
     4.1.  Diameter Agent Overload Use Cases . . . . . . . . . . . .   5
       4.1.1.  Single Agent  . . . . . . . . . . . . . . . . . . . .   5
       4.1.2.  Redundant Agents  . . . . . . . . . . . . . . . . . .   6
       4.1.3.  Agent Chains  . . . . . . . . . . . . . . . . . . . .   7
     4.2.  Diameter Endpoint Use Cases . . . . . . . . . . . . . . .   8
       4.2.1.  Hop-by-Hop Abatement Algorithms . . . . . . . . . . .   8
   5.  Interaction Between Host/Realm and Peer Overload Reports  . .   9
   6.  Peer-Report Behavior  . . . . . . . . . . . . . . . . . . . .   9
     6.1.  Capability Announcement . . . . . . . . . . . . . . . . .   9
       6.1.1.  Reacting-Node Behavior  . . . . . . . . . . . . . . .   9
       6.1.2.  Reporting-Node Behavior . . . . . . . . . . . . . . .   9
     6.2.  Peer Overload Report Handling . . . . . . . . . . . . . .  10
       6.2.1.  Overload Control State  . . . . . . . . . . . . . . .  10
       6.2.2.  Reporting-Node Maintenance of Peer-Report OCS . . . .  11
       6.2.3.  Reacting-Node Maintenance of Peer-Report OCS  . . . .  12
       6.2.4.  Peer-Report Reporting-Node Behavior . . . . . . . . .  13
       6.2.5.  Peer-Report Reacting-Node Behavior  . . . . . . . . .  13
   7.  Peer-Report AVPs  . . . . . . . . . . . . . . . . . . . . . .  14
     7.1.  OC-Supported-Features AVP . . . . . . . . . . . . . . . .  14
       7.1.1.  OC-Feature-Vector AVP . . . . . . . . . . . . . . . .  15
       7.1.2.  OC-Peer-Algo AVP  . . . . . . . . . . . . . . . . . .  15
     7.2.  OC-OLR AVP  . . . . . . . . . . . . . . . . . . . . . . .  15
       7.2.1.  OC-Report-Type AVP  . . . . . . . . . . . . . . . . .  16
     7.3.  SourceID AVP  . . . . . . . . . . . . . . . . . . . . . .  16
     7.4.  Attribute-Value Pair Flag Rules . . . . . . . . . . . . .  16
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  17
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  17
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  18
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  18
     10.2.  Informative References . . . . . . . . . . . . . . . . .  18
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .  18
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  19

Donovan                      Standards Track                    [Page 2]
RFC 8581         Diameter Agent Overload and Peer Report     August 2019

1.  Introduction

   This specification documents an extension to the Diameter Overload
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