A Session Initiation Protocol (SIP) Load Control Event Package
draft-ietf-soc-load-control-event-package-08

The information below is for an old version of the document
Document Type Active Internet-Draft (soc WG)
Last updated 2013-06-14 (latest revision 2013-03-14)
Replaces draft-soc-load-control-event-package
Stream IETF
Intended RFC status Proposed Standard
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Document shepherd Volker Hilt
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Responsible AD Richard Barnes
IESG note Volker Hilt (volker.hilt@alcatel-lucent.com) is the document shepherd.
Send notices to soc-chairs@tools.ietf.org, draft-ietf-soc-load-control-event-package@tools.ietf.org
IETF SOC Working Group                                           C. Shen
Internet-Draft                                            H. Schulzrinne
Intended status: Standards Track                             Columbia U.
Expires: September 14, 2013                                     A. Koike
                                                                     NTT
                                                          March 13, 2013

     A Session Initiation Protocol (SIP) Load Control Event Package
            draft-ietf-soc-load-control-event-package-08.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 September 14, 2013.

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 September 14, 2013               [Page 1]
Internet-Draft       SIP Load Control Event Package           March 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.  Applicability in Different Network Environments . . . . .  10
   6.  Load Control Event Package  . . . . . . . . . . . . . . . . .  11
     6.1.  Event Package Name  . . . . . . . . . . . . . . . . . . .  11
     6.2.  Event Package Parameters  . . . . . . . . . . . . . . . .  11
     6.3.  SUBSCRIBE Bodies  . . . . . . . . . . . . . . . . . . . .  11
     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  . . . . . . . . .  12
     6.8.  Subscriber Processing of NOTIFY Requests  . . . . . . . .  13
     6.9.  Handling of Forked Requests . . . . . . . . . . . . . . .  14
     6.10. Rate of Notifications . . . . . . . . . . . . . . . . . .  14
     6.11. State Delta . . . . . . . . . . . . . . . . . . . . . . .  14
   7.  Load Control Document . . . . . . . . . . . . . . . . . . . .  15
     7.1.  Format  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     7.2.  Namespace . . . . . . . . . . . . . . . . . . . . . . . .  15
     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 . . . . . . . . . . . . . . . .  24
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