Layer 2 Virtual Private Networks Using BGP for Auto-Discovery and Signaling
RFC 6624
Document | Type |
RFC - Informational
(May 2012; No errata)
Was draft-kompella-l2vpn-l2vpn (individual in rtg area)
|
|
---|---|---|---|
Last updated | 2015-10-14 | ||
Stream | IETF | ||
Formats | plain text pdf html bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6624 (Informational) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Stewart Bryant | ||
IESG note | Ross Callon (rcallon@juniper.net) is the document shepherd. | ||
Send notices to | rcallon@juniper.net |
Internet Engineering Task Force (IETF) K. Kompella Request for Comments: 6624 Juniper Networks Category: Informational B. Kothari ISSN: 2070-1721 Cisco Systems R. Cherukuri Juniper Networks May 2012 Layer 2 Virtual Private Networks Using BGP for Auto-Discovery and Signaling Abstract Layer 2 Virtual Private Networks (L2VPNs) based on Frame Relay or ATM circuits have been around a long time; more recently, Ethernet VPNs, including Virtual Private LAN Service, have become popular. Traditional L2VPNs often required a separate Service Provider infrastructure for each type and yet another for the Internet and IP VPNs. In addition, L2VPN provisioning was cumbersome. This document presents a new approach to the problem of offering L2VPN services where the L2VPN customer's experience is virtually identical to that offered by traditional L2VPNs, but such that a Service Provider can maintain a single network for L2VPNs, IP VPNs, and the Internet, as well as a common provisioning methodology for all services. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc6624. Kompella, et al. Informational [Page 1] RFC 6624 BGP Auto-Discovery and Signaling for L2VPN May 2012 Copyright Notice Copyright (c) 2012 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Kompella, et al. Informational [Page 2] RFC 6624 BGP Auto-Discovery and Signaling for L2VPN May 2012 Table of Contents 1. Introduction ....................................................3 1.1. Terminology ................................................6 1.1.1. Conventions Used in This Document ...................6 1.2. Advantages of Layer 2 VPNs .................................6 1.2.1. Separation of Administrative Responsibilities .......7 1.2.2. Migrating from Traditional Layer 2 VPNs .............7 1.2.3. Privacy of Routing ..................................7 1.2.4. Layer 3 Independence ................................7 1.2.5. PE Scaling ..........................................8 1.2.6. Ease of Configuration ...............................8 1.3. Advantages of Layer 3 VPNs .................................9 1.3.1. Layer 2 Independence ................................9 1.3.2. SP Routing as Added Value ..........................10 1.3.3. Class of Service ...................................10 1.4. Multicast Routing .........................................10 2. Operation of a Layer 2 VPN .....................................11 2.1. Network Topology ..........................................11 2.2. Configuration .............................................13 2.2.1. CE Configuration ...................................14 2.2.2. PE Configuration ...................................15 2.2.3. Adding a New Site ..................................15 2.2.4. Deleting a Site ....................................16 2.2.5. Managing CE ID Mappings ............................16 2.2.6. Managing Label Blocks ..............................16 2.3. Operations, Administration, and Maintenance (OAM) .........17 3. PE Information Exchange ........................................17Show full document text