Applicability Statement for Layer 1 Virtual Private Network (L1VPN) Basic Mode
RFC 5253
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
The reader is assumed to be familiar with the terminology in
[RFC3031], [RFC3209], [RFC3471], [RFC3473], [RFC4202], [RFC4026], and
[RFC4847].
2. Basic Mode Overview
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