Applicability Statement for Layer 1 Virtual Private Network (L1VPN) Basic Mode
RFC 5253

Document Type RFC - Informational (July 2008; No errata)
Last updated 2013-03-02
Replaces draft-takeda-l1vpn-applicability-basic-mode
Stream IETF
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Stream WG state (None)
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IESG IESG state RFC 5253 (Informational)
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Responsible AD David Ward
Send notices to l1vpn-chairs@ietf.org, draft-ietf-l1vpn-applicability-basic-mode@ietf.org
Network Working Group                                     T. Takeda, Ed.
Request for Comments: 5253                                           NTT
Category: Informational                                        July 2008

                      Applicability Statement for
           Layer 1 Virtual Private Network (L1VPN) Basic Mode

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.

Abstract

   This document provides an applicability statement on the use of
   Generalized Multiprotocol Label Switching (GMPLS) protocols and
   mechanisms to support Basic Mode Layer 1 Virtual Private Networks
   (L1VPNs).

   L1VPNs provide customer services and connectivity at Layer 1 over
   Layer 1 networks.  The operation of L1VPNs is divided into the Basic
   Mode and the Enhanced Mode, where the Basic Mode of operation does
   not feature any exchange of routing information between the Layer 1
   network and the customer domain.  This document examines how GMPLS
   protocols can be used to satisfy the requirements of a Basic Mode
   L1VPN.

Takeda                       Informational                      [Page 1]
RFC 5253                AS for L1VPN Basic Mode                July 2008

Table of Contents

   1. Introduction ....................................................3
      1.1. Terminology ................................................3
   2. Basic Mode Overview .............................................3
   3. Supported Network Types .........................................4
      3.1. Data Plane .................................................4
      3.2. Control Plane ..............................................4
   4. Addressing ......................................................5
   5. Provider Control of Its Infrastructure ..........................5
      5.1. Provisioning Model .........................................5
      5.2. PE-to-PE Segment Control ...................................6
           5.2.1. Path Computation and Establishment ..................6
           5.2.2. Resource Management .................................7
           5.2.3. Consideration of CE-to-PE Traffic Engineering
                  Information .........................................8
      5.3. Connectivity Restriction ...................................8
   6. Customer Control of Its L1VPN ...................................8
      6.1. Topology Control ...........................................8
      6.2. Note on Routing ............................................9
   7. Scalability and Resiliency .....................................10
      7.1. Scalability ...............................................10
      7.2. Data Plane Resiliency .....................................11
      7.3. Control Plane Resiliency ..................................12
   8. Security Considerations ........................................12
      8.1. Topology Confidentiality ..................................12
      8.2. External Control of the Provider Network ..................13
      8.3. Data Plane Security .......................................13
      8.4. Control Plane Security ....................................14
   9. Manageability Considerations ...................................15
   10. References ....................................................15
      10.1. Normative References .....................................15
      10.2. Informative References ...................................16
   11. Acknowledgments ...............................................17

Takeda                       Informational                      [Page 2]
RFC 5253                AS for L1VPN Basic Mode                July 2008

1.  Introduction

   This document provides an applicability statement on the use of
   Generalized Multiprotocol Label Switching (GMPLS) protocols and
   mechanisms to Basic Mode Layer 1 Virtual Private Networks (L1VPNs) as
   specified in [RFC4847].

   The operation of L1VPNs is divided into the Basic Mode and the
   Enhanced Mode.  The Basic Mode of operation does not feature any
   exchange of routing information between the Layer 1 network and the
   customer domain, while the Enhanced Mode of operation features
   exchange of routing information between the Layer 1 network and the
   customer domain.

   The main GMPLS protocols and mechanisms applicable to the L1VPN Basic
   Mode are described in [RFC5251], [RFC5195], and [RFC5252], along with
   several other documents referenced within this document.

   Note that discussion in this document is focused on areas where GMPLS
   protocols and mechanisms are relevant.

1.1.  Terminology
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