Diameter Group Signaling
draft-ietf-dime-group-signaling-12

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Diameter Maintenance and Extensions (DIME)                      M. Jones
Internet-Draft
Intended status: Standards Track                              M. Liebsch
Expires: July 1, 2019
                                                               L. Morand
                                                       December 28, 2018

                        Diameter Group Signaling
                 draft-ietf-dime-group-signaling-12.txt

Abstract

   In large network deployments, a single Diameter node can support over
   a million concurrent Diameter sessions.  Recent use cases have
   revealed the need for Diameter nodes to apply the same operation to a
   large group of Diameter sessions concurrently.  The Diameter base
   protocol commands operate on a single session so these use cases
   could result in many thousands of command exchanges to enforce the
   same operation on each session in the group.  In order to reduce
   signaling, it would be desirable to enable bulk operations on all (or
   part of) the sessions managed by a Diameter node using a single or a
   few command exchanges.  This document specifies the Diameter protocol
   extensions to achieve this signaling optimization.

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 July 1, 2019.

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Jones, et al.             Expires July 1, 2019                  [Page 1]
Internet-Draft          Diameter Group Signaling           December 2018

   This document is subject to BCP 78 and the IETF Trust's Legal
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Protocol Overview . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Building and Modifying Session Groups . . . . . . . . . .   4
     3.2.  Issuing Group Commands  . . . . . . . . . . . . . . . . .   4
     3.3.  Permission Considerations . . . . . . . . . . . . . . . .   4
   4.  Protocol Description  . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Session Grouping Capability Discovery . . . . . . . . . .   7
       4.1.1.  Explicit Capability Discovery . . . . . . . . . . . .   7
       4.1.2.  Implicit Capability Discovery . . . . . . . . . . . .   7
     4.2.  Session Grouping  . . . . . . . . . . . . . . . . . . . .   7
       4.2.1.  Group assignment at session initiation  . . . . . . .   8
       4.2.2.  Removing a session from a session group . . . . . . .  11
       4.2.3.  Mid-session group assignment modifications  . . . . .  12
     4.3.  Deleting a Session Group  . . . . . . . . . . . . . . . .  13
     4.4.  Performing Group Operations . . . . . . . . . . . . . . .  13
       4.4.1.  Sending Group Commands  . . . . . . . . . . . . . . .  13
       4.4.2.  Receiving Group Commands  . . . . . . . . . . . . . .  14
       4.4.3.  Error Handling for Group Commands . . . . . . . . . .  14
       4.4.4.  Single-Session Fallback . . . . . . . . . . . . . . .  15
   5.  Operation with Proxy Agents . . . . . . . . . . . . . . . . .  15
   6.  Commands Formatting . . . . . . . . . . . . . . . . . . . . .  16
     6.1.  Formatting Example: Group Re-Auth-Request . . . . . . . .  16
   7.  Attribute-Value-Pairs (AVP) . . . . . . . . . . . . . . . . .  17
     7.1.  Session-Group-Info AVP  . . . . . . . . . . . . . . . . .  17
     7.2.  Session-Group-Control-Vector AVP  . . . . . . . . . . . .  18
     7.3.  Session-Group-Id AVP  . . . . . . . . . . . . . . . . . .  18
     7.4.  Group-Response-Action AVP . . . . . . . . . . . . . . . .  19
     7.5.  Session-Group-Capability-Vector AVP . . . . . . . . . . .  19
   8.  Result-Code AVP Values  . . . . . . . . . . . . . . . . . . .  19
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  19