simple VPN solution using Multi-point Security Association
draft-yamaya-ipsecme-mpsa-01

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IP Security Maintenance and Extensions                   A. Yamaya, Ed.
(ipsecme)                                                       K. Ueki
Internet-Draft                                                 T. Murai
Intended status: Informational          Furukawa Network Solution Corp.
Created: June 26, 2013                                          T. Ohya
Expires: December 26, 2013                                          NTT
                                                          June 26, 2013

         simple VPN solution using Multi-point Security Association
                    draft-yamaya-ipsecme-mpsa-01.txt

Abstract
   This document describes the over-lay network solution by utilizing 
   dynamically established IPsec multi-point Security Association (SA)
   without individual connection.
   
   Multi-point SA technology provides the simplified mechanism of the 
   Auto Discovery and Configuration function. 
   This is applicable for any IPsec tunnels such as IPv4 over IPv4, 
   IPv4 over IPv6, IPv6 over IPv4 and IPv6 over IPv6.
   

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Table of Contents
   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 
     1.1  Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
   2.  Motivation   . . . . . . . . . . . . . . . . . . . . . . . . 3  
   3.  Procedure  . . . . . . . . . . . . . . . . . . . . . . . . . 5 
     3.1.  Sequence . . . . . . . . . . . . . . . . . . . . . . . . 5
     3.2.  Extended Format  . . . . . . . . . . . . . . . . . . . . 5
     3.2.1 Vendor ID  . . . . . . . . . . . . . . . . . . . . . . . 5 
     3.2.2 MPSA_PUT   . . . . . . . . . . . . . . . . . . . . . . . 5
     3.3   Multi-point SA Management  . . . . . . . . . . . . . . .11
     3.3.1 Gateway  . . . . . . . . . . . . . . . . . . . . . . . .11
     3.3.2 CPE . . . . . . . . . . . . . . . . . . . . . . . . .   11
     3.3.3 Rekeying   . . . . . . . . . . . . . . . . . . . . . . .12 
     3.4.  Forwarding . . . . . . . . . . . . . . . . . . . . . . .12
   4.  Security Considerations  . . . . . . . . . . . . . . . . . .12  
   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . .12 
   6.  REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . .12
     6.1 Normative References . . . . . . . . . . . . . . . . . . .12
     6.2 Informative References . . . . . . . . . . . . . . . . . .13
   7.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . .12 
   8.  AUTHOR'S ADDRESSES . . . . . . . . . . . . . . . . . . . . .13 
   

1. Introduction
   As described in the problem statement document[ad-vpn-problem], 
   dynamic, secure and scalable system for establishing SAs is needed.
  
   With multi-point SA, an endpoint automatically discovers other 
   endpoint. In this draft, an endpoint means an inexpensive CPE, which
   can hardly establish large number of IPsec sessions simultaneously.
   The CPEs also share a multi-point SA within the same 
   group, and there is no individual connection between them.
   
   Scalability issue becomes serious in the service, such as triple play
   which requires large number of sessions at the same time. 
   MPSA enables large scale simultaneous sessions even with inexpensive CPEs, 
   and can avoid scalability issue.
   
   The latency between CPEs can be minimized because of stateless 
   shared multipoint SA, MPSA is suitable for video and voice 
   services which is very sensitive to latency.
   
   It can avoid the exhaustive configuration for CPEs/ gateways. 
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