Automatic Peering for SIP Trunks
draft-kinamdar-dispatch-sip-auto-peer-01

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Network Working Group                                         K. Inamdar
Internet-Draft                                              S. Narayanan
Intended status: Standards Track                             C. Jennings
Expires: May 6, 2020                                       Cisco Systems
                                                        November 3, 2019

                    Automatic Peering for SIP Trunks
                draft-kinamdar-dispatch-sip-auto-peer-01

Abstract

   This draft specifies a configuration workflow to enable enterprise
   Session Initiation Protocol (SIP) networks to solicit the capability
   set of a SIP service provider network.  The capability set can
   subsequently be used to configure features and services on the
   enterprise edge element, such as a Session Border Controller (SBC),
   to ensure smooth peering between enterprise and service provider
   networks.

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
   Task Force (IETF).  Note that other groups may also distribute
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   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 6, 2020.

Copyright Notice

   Copyright (c) 2019 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
   (https://trustee.ietf.org/license-info) in effect on the date of
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   to this document.  Code Components extracted from this document must

Inamdar, et al.            Expires May 6, 2020                  [Page 1]
Internet-Draft                SIP Auto Peer                November 2019

   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions and Terminology . . . . . . . . . . . . . . . . .   3
   3.  Reference Architecture  . . . . . . . . . . . . . . . . . . .   3
   4.  Configuration Workflow  . . . . . . . . . . . . . . . . . . .   5
   5.  Overview of Operations  . . . . . . . . . . . . . . . . . . .   6
   6.  HTTP Transport  . . . . . . . . . . . . . . . . . . . . . . .   7
     6.1.  HTTP Methods  . . . . . . . . . . . . . . . . . . . . . .   7
     6.2.  Integrity and Confidentiality . . . . . . . . . . . . . .   7
     6.3.  Authenticated Client Identity . . . . . . . . . . . . . .   8
     6.4.  Encoding the Request  . . . . . . . . . . . . . . . . . .   8
     6.5.  Generating the Response . . . . . . . . . . . . . . . . .   8
     6.6.  Identifying the Request Target  . . . . . . . . . . . . .   9
   7.  State Deltas  . . . . . . . . . . . . . . . . . . . . . . . .   9
   8.  Encoding the Service Provider Capability Set  . . . . . . . .   9
   9.  Data Model for Capability Set . . . . . . . . . . . . . . . .  10
     9.1.  Tree Diagram  . . . . . . . . . . . . . . . . . . . . . .  10
     9.2.  YANG Model  . . . . . . . . . . . . . . . . . . . . . . .  11
     9.3.  Node Definitions  . . . . . . . . . . . . . . . . . . . .  17
     9.4.  Extending the Capability Set  . . . . . . . . . . . . . .  23
   10. Example Capability Set Document Encoding  . . . . . . . . . .  24
     10.1.  XML Capability Set Document  . . . . . . . . . . . . . .  24
   11. Example Exchange  . . . . . . . . . . . . . . . . . . . . . .  26
   12. Security Considerations . . . . . . . . . . . . . . . . . . .  26
   13. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  26
   14. References  . . . . . . . . . . . . . . . . . . . . . . . . .  26
     14.1.  Normative References . . . . . . . . . . . . . . . . . .  26
     14.2.  Informative References . . . . . . . . . . . . . . . . .  27
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  28

1.  Introduction

   The deployment of a Session Initiation Protocol (SIP)-based
   infrastructure in enterprise and service provider communication
   networks is increasing at a rapid pace.  Consequently, direct IP
   peering between enterprise and service provider networks is quickly
   replacing traditional methods of interconnection between enterprise