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Generic Requirements for Provider Provisioned Virtual Private Networks (PPVPN)
RFC 3809

Network Working Group                                  A. Nagarajan, Ed.
Request for Comments: 3809                              Juniper Networks
Category: Informational                                        June 2004

             Generic Requirements for Provider Provisioned
                   Virtual Private Networks (PPVPN)

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2004).

Abstract

   This document describes generic requirements for Provider Provisioned
   Virtual Private Networks (PPVPN).  The requirements are categorized
   into service requirements, provider requirements and engineering
   requirements.  These requirements are not specific to any particular
   type of PPVPN technology, but rather apply to all PPVPN technologies.
   All PPVPN technologies are expected to meet the umbrella set of
   requirements described in this document.

Nagarajan                    Informational                      [Page 1]
RFC 3809                         PPVPN                         June 2004

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
       1.1. Problem Statement . . . . . . . . . . . . . . . . . . . .  3
       1.2. Deployment Scenarios. . . . . . . . . . . . . . . . . . .  4
       1.3. Outline of this document. . . . . . . . . . . . . . . . .  5
   2.  Contributing Authors . . . . . . . . . . . . . . . . . . . . .  6
   3.  Definitions and Taxonomy . . . . . . . . . . . . . . . . . . .  7
   4.  Service Requirements . . . . . . . . . . . . . . . . . . . . .  7
       4.1. Availability  . . . . . . . . . . . . . . . . . . . . . .  7
       4.2. Stability . . . . . . . . . . . . . . . . . . . . . . . .  8
       4.3. Traffic types . . . . . . . . . . . . . . . . . . . . . .  8
       4.4. Data Isolation. . . . . . . . . . . . . . . . . . . . . .  9
       4.5. Security  . . . . . . . . . . . . . . . . . . . . . . . .  9
            4.5.1. User data security . . . . . . . . . . . . . . . . 10
            4.5.2. Access Control . . . . . . . . . . . . . . . . . . 10
            4.5.3. Site authentication and authorization. . . . . . . 10
            4.5.4. Inter domain security. . . . . . . . . . . . . . . 10
       4.6. Topology  . . . . . . . . . . . . . . . . . . . . . . . . 11
       4.7. Addressing. . . . . . . . . . . . . . . . . . . . . . . . 11
       4.8. Quality of Service  . . . . . . . . . . . . . . . . . . . 11
       4.9. Service Level Agreement and Service Level Specification
            Monitoring and Reporting. . . . . . . . . . . . . . . . . 13
       4.10.Network Resource Partitioning and Sharing between VPNs. . 14
   5.  Provider requirements. . . . . . . . . . . . . . . . . . . . . 14
       5.1. Scalability . . . . . . . . . . . . . . . . . . . . . . . 14
            5.1.1. Service Provider Capacity Sizing Projections . . . 15
            5.1.2. VPN Scalability aspects. . . . . . . . . . . . . . 15
            5.1.3. Solution-Specific Metrics. . . . . . . . . . . . . 17
       5.2. Management  . . . . . . . . . . . . . . . . . . . . . . . 18
            5.2.1. Customer Management of a VPN . . . . . . . . . . . 18
   6.  Engineering requirements . . . . . . . . . . . . . . . . . . . 19
       6.1. Forwarding plane requirements . . . . . . . . . . . . . . 19
       6.2. Control plane requirements. . . . . . . . . . . . . . . . 20
       6.3. Control Plane Containment . . . . . . . . . . . . . . . . 20
       6.4. Requirements related to commonality of PPVPN mechanisms
            with each other and with generic Internet mechanisms. . . 21
       6.5. Interoperability  . . . . . . . . . . . . . . . . . . . . 21
   7.  Security Considerations. . . . . . . . . . . . . . . . . . . . 22
   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 23
       8.1. Normative References. . . . . . . . . . . . . . . . . . . 23
       8.2. Informative References. . . . . . . . . . . . . . . . . . 23
   9.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 24
   10. Editor's Address . . . . . . . . . . . . . . . . . . . . . . . 24
   11. Full Copyright Statement . . . . . . . . . . . . . . . . . . . 25

Nagarajan                    Informational                      [Page 2]
RFC 3809                         PPVPN                         June 2004

1.  Introduction

   This document is an output of the design team formed to develop
   requirements for PPVPNs in the Provider Provisioned Virtual Private
   Networks (PPVPN) working group and provides requirements that are
   generic to both Layer 2 Virtual Private Networks (L2VPN) and Layer 3

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