LDP Extensions for Pseudowire Binding to Label Switched Path (LSP) Tunnels (RFC7965)
Original Publication Date: 2016-Aug-01
Included in the Prior Art Database: 2016-Sep-01
Internet Society Requests For Comment (RFCs)
M. Chen: AUTHOR [+4]
Pseudo Wire Emulation Edge-to-Edge (PWE3) [RFC3985] is a mechanism to emulate Layer 2 services, such as Ethernet Point-to-Point circuits. Such services are emulated between two Attachment Circuits, and the Pseudowire-encapsulated Layer 2 service payload is transported via Packet Switching Network (PSN) tunnels between Provider Edges (PEs). PWE3 typically uses the Label Distribution Protocol (LDP) [RFC5036] or Resource Reservation Protocol - Traffic Engineering (RSVP-TE) [RFC3209] Label Switched Paths (LSPs) as PSN tunnels. The PEs select and bind the Pseudowires to PSN tunnels independently. Today, there is no standardized protocol-based provisioning mechanism to associate PWs with PSN tunnels; such associations must be managed via provisioning or other private methods.
Internet Engineering Task Force (IETF) M. Chen Request for Comments: 7965 W. Cao Category: Standards Track Huawei ISSN: 2070-1721 A. Takacs Ericsson P. Pan August 2016
LDP Extensions for Pseudowire Binding to Label Switched Path (LSP) Tunnels
Many transport services require that user traffic, in the form of Pseudowires (PWs), be delivered via either a single co-routed bidirectional tunnel or two unidirectional tunnels that share the same routes. This document defines an optional extension to the Label Distribution Protocol (LDP) that enables the binding between PWs and the underlying Traffic Engineering (TE) tunnels. The extension applies to both single-segment and multi-segment PWs.
Status of This Memo
This is an Internet Standards Track document.
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). Further information on Internet Standards is available in Section 2 of RFC 7841.
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/rfc7965.
Chen, et al. Standards Track [Page 1]
RFC 7965 Explicit PW-to-LSP Tunnels Binding August 2016
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