A Session Initiation Protocol (SIP) Load Control Event Package
draft-ietf-soc-load-control-event-package-11

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Document Type Active Internet-Draft (soc WG)
Last updated 2013-11-24
Replaces draft-soc-load-control-event-package
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state WG Consensus: Waiting for Write-Up
Document shepherd Volker Hilt
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IETF SOC Working Group                                           C. Shen
Internet-Draft                                            H. Schulzrinne
Intended status: Standards Track                             Columbia U.
Expires: May 28, 2014                                           A. Koike
                                                                     NTT
                                                       November 24, 2013

     A Session Initiation Protocol (SIP) Load Control Event Package
            draft-ietf-soc-load-control-event-package-11.txt

Abstract

   We define a load control event package for the Session Initiation
   Protocol (SIP).  It allows SIP entities to distribute load filtering
   policies to other SIP entities in the network.  The load filtering
   policies contain rules to throttle calls based on their source or
   destination domain, telephone number prefix or for a specific user.
   The mechanism helps to prevent signaling overload and complements
   feedback-based SIP overload control efforts.

Status of This Memo

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   This Internet-Draft will expire on May 28, 2014.

Copyright Notice

   Copyright (c) 2013 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
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect

Shen, et al.              Expires May 28, 2014                  [Page 1]
Internet-Draft       SIP Load Control Event Package        November 2013

   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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Conventions . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Definitions . . . . . . . . . . . . . . . . . . . . . . . . .   5
   4.  Design Requirements . . . . . . . . . . . . . . . . . . . . .   6
   5.  SIP Load Filtering Overview . . . . . . . . . . . . . . . . .   6
     5.1.  Load Filtering Policy Format  . . . . . . . . . . . . . .   6
     5.2.  Load Filtering Policy Computation . . . . . . . . . . . .   7
     5.3.  Load Filtering Policy Distribution  . . . . . . . . . . .   7
     5.4.  Applicable Network Domains  . . . . . . . . . . . . . . .  10
   6.  Load Control Event Package  . . . . . . . . . . . . . . . . .  11
     6.1.  Event Package Name  . . . . . . . . . . . . . . . . . . .  12
     6.2.  Event Package Parameters  . . . . . . . . . . . . . . . .  12
     6.3.  SUBSCRIBE Bodies  . . . . . . . . . . . . . . . . . . . .  12
     6.4.  SUBSCRIBE Duration  . . . . . . . . . . . . . . . . . . .  12
     6.5.  NOTIFY Bodies . . . . . . . . . . . . . . . . . . . . . .  12
     6.6.  Notifier Processing of SUBSCRIBE Requests . . . . . . . .  12
     6.7.  Notifier Generation of NOTIFY Requests  . . . . . . . . .  13
     6.8.  Subscriber Processing of NOTIFY Requests  . . . . . . . .  13
     6.9.  Handling of Forked Requests . . . . . . . . . . . . . . .  14
     6.10. Rate of Notifications . . . . . . . . . . . . . . . . . .  15
     6.11. State Delta . . . . . . . . . . . . . . . . . . . . . . .  15
   7.  Load Control Document . . . . . . . . . . . . . . . . . . . .  15
     7.1.  Format  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     7.2.  Namespace . . . . . . . . . . . . . . . . . . . . . . . .  16
     7.3.  Conditions  . . . . . . . . . . . . . . . . . . . . . . .  16
       7.3.1.  Call Identity . . . . . . . . . . . . . . . . . . . .  16
       7.3.2.  Method  . . . . . . . . . . . . . . . . . . . . . . .  19
       7.3.3.  Target SIP Entity . . . . . . . . . . . . . . . . . .  19
       7.3.4.  Validity  . . . . . . . . . . . . . . . . . . . . . .  20
     7.4.  Actions . . . . . . . . . . . . . . . . . . . . . . . . .  21
     7.5.  Complete Examples . . . . . . . . . . . . . . . . . . . .  22
       7.5.1.  Load Control Document Examples  . . . . . . . . . . .  22
       7.5.2.  Message Flow Examples . . . . . . . . . . . . . . . .  25
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