MPLS Transport Profile (MPLS-TP) Next-Hop Ethernet Addressing
RFC 7213
Document | Type | RFC - Proposed Standard (June 2014; No errata) | |
---|---|---|---|
Authors | Dan Frost , Stewart Bryant , Matthew Bocci | ||
Last updated | 2015-10-14 | ||
Replaces | draft-fbb-mpls-tp-ethernet-addressing | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | WG Document | |
Document shepherd | Loa Andersson | ||
Shepherd write-up | Show (last changed 2014-04-30) | ||
IESG | IESG state | RFC 7213 (Proposed Standard) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Adrian Farrel | ||
IESG note | Loa Andersson (loa@pi.nu) is the document shepherd. | ||
Send notices to | (None) | ||
IANA | IANA review state | IANA OK - Actions Needed | |
IANA action state | RFC-Ed-Ack |
Internet Engineering Task Force (IETF) D. Frost Request for Comments: 7213 Blue Sun Category: Standards Track S. Bryant ISSN: 2070-1721 Cisco Systems M. Bocci Alcatel-Lucent June 2014 MPLS Transport Profile (MPLS-TP) Next-Hop Ethernet Addressing Abstract The MPLS Transport Profile (MPLS-TP) is the set of MPLS protocol functions applicable to the construction and operation of packet- switched transport networks. This document presents considerations for link-layer addressing of Ethernet frames carrying MPLS-TP packets. 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 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/rfc7213. Copyright Notice Copyright (c) 2014 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. Frost, et al. Standards Track [Page 1] RFC 7213 MPLS-TP Ethernet Addressing June 2014 1. Introduction The MPLS Transport Profile (MPLS-TP) [RFC5921] is the set of protocol functions that meet the requirements [RFC5654] for the application of MPLS to the construction and operation of packet-switched transport networks. The MPLS-TP data plane consists of those MPLS-TP functions concerned with the encapsulation and forwarding of MPLS-TP packets and is described in [RFC5960]. This document presents considerations for link-layer addressing of Ethernet frames carrying MPLS-TP packets. Since MPLS-TP packets are MPLS packets, existing procedures ([RFC3032], [RFC5332]) for the encapsulation of MPLS packets over Ethernet apply. Because IP functionality is optional in an MPLS-TP network, IP-based protocols for Media Access Control (MAC) address learning, such as the Address Resolution Protocol (ARP) [RFC826] and IPv6 Neighbor Discovery [RFC4861], may not be available. This document specifies the options for the determination and selection of the next-hop Ethernet MAC address when MPLS-TP is used between nodes that do not have an IP data plane. 1.1. Terminology Term Definition ------- --------------------------- ARP Address Resolution Protocol G-ACh Generic Associated Channel LSP Label Switched Path LSR Label Switching Router MAC Media Access Control MPLS-TP MPLS Transport Profile Additional definitions and terminology can be found in [RFC5960] and [RFC5654]. 1.2. Requirements Language The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in [RFC2119]. 2. Point-to-Point Link Addressing When two MPLS-TP nodes are connected by a point-to-point Ethernet link, the question arises as to what destination Ethernet Media Access Control (MAC) address should be specified in Ethernet frames transmitted to the peer node over the link. The problem of determining this address does not arise in IP/MPLS networks because Frost, et al. Standards Track [Page 2] RFC 7213 MPLS-TP Ethernet Addressing June 2014 of the presence of the Ethernet Address Resolution Protocol (commonly referred to as the Address Resolution Protocol and shortened to ARP) [RFC826] or IPv6 Neighbor Discovery (ND) protocol [RFC4861], which allow the unicast MAC address of the peer device to be learned dynamically. If existing mechanisms are available in an MPLS-TP network to determine the destination unicast MAC addresses of peer nodes, forShow full document text