Diameter Agent Overload and the Peer Overload Report
draft-ietf-dime-agent-overload-11

Document Type Active Internet-Draft (dime WG)
Last updated 2017-03-29 (latest revision 2017-03-22)
Replaces draft-donovan-dime-agent-overload
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Diameter Maintenance and Extensions (DIME)                    S. Donovan
Internet-Draft                                                    Oracle
Updates: RFC7683 (if approved)                            March 22, 2017
Intended status: Standards Track
Expires: September 23, 2017

          Diameter Agent Overload and the Peer Overload Report
                 draft-ietf-dime-agent-overload-11.txt

Abstract

   This specification documents an extension to RFC 7683 (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

   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
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   This Internet-Draft will expire on September 23, 2017.

Copyright Notice

   Copyright (c) 2017 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

Donovan                Expires September 23, 2017               [Page 1]
Internet-Draft   Diameter Agent Overload and Peer Report      March 2017

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology and Abbreviations . . . . . . . . . . . . . . . .   3
   3.  Peer Report Use Cases . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Diameter Agent Overload Use Cases . . . . . . . . . . . .   4
       3.1.1.  Single Agent  . . . . . . . . . . . . . . . . . . . .   5
       3.1.2.  Redundant Agents  . . . . . . . . . . . . . . . . . .   6
       3.1.3.  Agent Chains  . . . . . . . . . . . . . . . . . . . .   7
     3.2.  Diameter Endpoint Use Cases . . . . . . . . . . . . . . .   8
       3.2.1.  Hop-by-hop Abatement Algorithms . . . . . . . . . . .   8
   4.  Interaction Between Host/Realm and Peer Overload Reports  . .   8
   5.  Peer Report Behavior  . . . . . . . . . . . . . . . . . . . .   8
     5.1.  Capability Announcement . . . . . . . . . . . . . . . . .   9
       5.1.1.  Reacting Node Behavior  . . . . . . . . . . . . . . .   9
       5.1.2.  Reporting Node Behavior . . . . . . . . . . . . . . .   9
     5.2.  Peer 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 . . . . . . . . .  12
       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 AVP . . . . . . . . . . . . . . . .  14
       6.1.2.  OC-Peer-Algo AVP  . . . . . . . . . . . . . . . . . .  14
     6.2.  OC-OLR AVP  . . . . . . . . . . . . . . . . . . . . . . .  15
       6.2.1.  OC-Report-Type AVP  . . . . . . . . . . . . . . . . .  15
     6.3.  SourceID AVP  . . . . . . . . . . . . . . . . . . . . . .  15
     6.4.  Attribute Value Pair Flag Rules . . . . . . . . . . . . .  16
   7.  IANA  Considerations  . . . . . . . . . . . . . . . . . . . .  16
     7.1.  AVP Codes . . . . . . . . . . . . . . . . . . . . . . . .  16
     7.2.  New Registries  . . . . . . . . . . . . . . . . . . . . .  16
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