Layer 1 VPN Basic Mode
RFC 5251

Document Type RFC - Proposed Standard (July 2008; Errata)
Last updated 2013-03-02
Replaces draft-fedyk-l1vpn-basic-mode
Stream IETF
Formats plain text pdf html
Stream WG state (None)
Consensus Unknown
Document shepherd No shepherd assigned
IESG IESG state RFC 5251 (Proposed Standard)
Telechat date
Responsible AD David Ward
Send notices to l1vpn-chairs@ietf.org, draft-ietf-l1vpn-basic-mode@ietf.org
Network Working Group                                      D. Fedyk, Ed.
Request for Comments: 5251                                        Nortel
Category: Standards Track                                Y. Rekhter, Ed.
                                                        Juniper Networks
                                                        D. Papadimitriou
                                                          Alcatel-Lucent
                                                               R. Rabbat
                                                                  Google
                                                               L. Berger
                                                                    LabN
                                                               July 2008

                         Layer 1 VPN Basic Mode

Status of This Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Abstract

   This document describes the Basic Mode of Layer 1 VPNs (L1VPNs).
   L1VPN Basic Mode (L1VPN BM) is a port-based VPN.  In L1VPN Basic
   Mode, the basic unit of service is a Label Switched Path (LSP)
   between a pair of customer ports within a given VPN port topology.
   This document defines the operational model using either provisioning
   or a VPN auto-discovery mechanism, and the signaling extensions for
   the L1VPN BM.

Fedyk, et al.               Standards Track                     [Page 1]
RFC 5251                    L1VPN Basic Mode                   July 2008

Table of Contents

   1. Introduction ....................................................3
      1.1. Conventions Used in This Document ..........................4
   2. Layer 1 VPN Service .............................................4
   3. Addressing, Ports, Links, and Control Channels ..................7
      3.1. Service Provider Realm .....................................7
      3.2. Layer 1 Ports and Index ....................................7
      3.3. Port and Index Mapping .....................................8
   4. Port-Based L1VPN Basic Mode ....................................10
      4.1. L1VPN Port Information Tables .............................11
           4.1.1. Local Auto-Discovery Information ...................12
           4.1.2. PE Remote Auto-Discovery Information ...............12
      4.2. CE-to-CE LSP Establishment ................................14
      4.3. Signaling .................................................15
           4.3.1. Signaling Procedures ...............................15
                  4.3.1.1. Shuffling Sessions ........................16
                  4.3.1.2. Stitched or Nested Sessions ...............17
                  4.3.1.3. Other Signaling ...........................18
      4.4. Recovery Procedures .......................................19
   5. Security Considerations ........................................20
   6. References .....................................................21
      6.1. Normative References ......................................21
      6.2. Informative References ....................................22
   7. Acknowledgments ................................................23

Fedyk, et al.               Standards Track                     [Page 2]
RFC 5251                    L1VPN Basic Mode                   July 2008

1.  Introduction

   This document describes the Basic Mode of Layer 1 VPNs (L1VPN BM)
   that is outlined in [RFC4847].  The applicability of Layer 1 VPNS is
   covered in [RFC5253].  In this document, we consider a layer 1
   service provider network that consists of devices that support GMPLS
   (e.g., Lambda Switch Capable (LSC) devices, optical cross-connects,
   Synchronous Optical Network / Synchronous Digital Hierarchy
   (SONET/SDH) cross-connects, etc.).  We partition these devices into P
   (provider) and PE (provider edge) devices.  In the context of this
   document we will refer to the former devices as just "P", and to the
   latter devices as just "PE".  The Ps are connected only to the
   devices within the provider's network.  The PEs are connected to the
   other devices within the network (either Ps or PEs), as well as to
   the devices outside of the service provider network.  We'll refer to
   such other devices as Customer Edge (CE) devices.  An example of a CE
   would be a GMPLS-enabled device that is either a router, an SDH
   cross-connect, or an Ethernet switch.
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