Diameter Agent Overload and the Peer Overload Report
draft-ietf-dime-agent-overload-03

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Document Type Active Internet-Draft (dime WG)
Last updated 2015-10-14
Replaces draft-donovan-dime-agent-overload
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Diameter Maintenance and Extensions (DIME)                    S. Donovan
Internet-Draft                                                    Oracle
Intended status: Standards Track                        October 14, 2015
Expires: April 16, 2016

          Diameter Agent Overload and the Peer Overload Report
                 draft-ietf-dime-agent-overload-03.txt

Abstract

   This specification documents an extension to the Diameter Overload
   Indication Conveyance (DOIC) base solution.  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.

Requirements

   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 RFC 2119 [RFC2119].

Status of This Memo

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   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on April 16, 2016.

Copyright Notice

   Copyright (c) 2015 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

Donovan                  Expires April 16, 2016                 [Page 1]
Internet-Draft   Diameter Agent Overload and Peer Report    October 2015

   publication of this document.  Please review these documents
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology and Abbreviations . . . . . . . . . . . . . . . .   3
   3.  Peer Report Use Cases . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Diameter Agent Overload Use Cases . . . . . . . . . . . .   4
       3.1.1.  Single Agent  . . . . . . . . . . . . . . . . . . . .   4
       3.1.2.  Redundant Agents  . . . . . . . . . . . . . . . . . .   5
       3.1.3.  Agent Chains  . . . . . . . . . . . . . . . . . . . .   6
     3.2.  Diameter Endpoint Use Cases . . . . . . . . . . . . . . .   7
       3.2.1.  Hop-by-hop Abatement Algorithms . . . . . . . . . . .   7
   4.  Interaction Between Host/Realm and Peer Overload Reports  . .   8
   5.  Peer Report Behavior  . . . . . . . . . . . . . . . . . . . .   8
     5.1.  Capability Announcement . . . . . . . . . . . . . . . . .   8
       5.1.1.  Reacting Node Behavior  . . . . . . . . . . . . . . .   8
       5.1.2.  Reporting Node Behavior . . . . . . . . . . . . . . .   9
     5.2.  Peer Report Overload Report Handling  . . . . . . . . . .  10
       5.2.1.  Overload Control State  . . . . . . . . . . . . . . .  10
       5.2.2.  Reporting Node Maintenance of Peer Report OCS . . . .  11
       5.2.3.  Reacting Node Maintenance of Peer Report OCS  . . . .  11
       5.2.4.  Peer Report Reporting Node Behavior . . . . . . . . .  13
       5.2.5.  Peer Report Reacting Node Behavior  . . . . . . . . .  13
   6.  Peer Report AVPs  . . . . . . . . . . . . . . . . . . . . . .  14
     6.1.  OC-Supported-Features AVP . . . . . . . . . . . . . . . .  14
       6.1.1.  OC-Feature-Vector . . . . . . . . . . . . . . . . . .  14
       6.1.2.  OC-Peer-Algo  . . . . . . . . . . . . . . . . . . . .  15
     6.2.  OC-OLR AVP  . . . . . . . . . . . . . . . . . . . . . . .  15
       6.2.1.  OC-Report-Type AVP  . . . . . . . . . . . . . . . . .  16
     6.3.  OC-SourceID . . . . . . . . . . . . . . . . . . . . . . .  16
     6.4.  Attribute Value Pair flag rules . . . . . . . . . . . . .  16
   7.  IANA  Considerations  . . . . . . . . . . . . . . . . . . . .  16
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  16
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  17
   10. Normative References  . . . . . . . . . . . . . . . . . . . .  17
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  18

1.  Introduction

   This document defines the behavior of Diameter nodes when Diameter
   agents enter an overload condition and send an overload report
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