Proactive Connectivity Verification, Continuity Check, and Remote Defect Indication for the MPLS Transport Profile
RFC 6428
| Document | Type |
RFC - Proposed Standard
(November 2011; Errata)
Updated by RFC 7214
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Replaces | draft-ietf-mpls-tp-bfd-cc-cv | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 6428 (Proposed Standard) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Adrian Farrel | ||
| IESG note | Loa Andersson (loa@pi.nu) is the Document Shepherd. | ||
| Send notices to | (None) | ||
Internet Engineering Task Force (IETF) D. Allan, Ed.
Request for Comments: 6428 Ericsson
Category: Standards Track G. Swallow, Ed.
ISSN: 2070-1721 Cisco Systems, Inc.
J. Drake, Ed.
Juniper
November 2011
Proactive Connectivity Verification, Continuity Check, and
Remote Defect Indication for the MPLS Transport Profile
Abstract
Continuity Check, Proactive Connectivity Verification, and Remote
Defect Indication functionalities are required for MPLS Transport
Profile (MPLS-TP) Operations, Administration, and Maintenance (OAM).
Continuity Check monitors a Label Switched Path for any loss of
continuity defect. Connectivity Verification augments Continuity
Check in order to provide confirmation that the desired source is
connected to the desired sink. Remote Defect Indication enables an
end point to report, to its associated end point, a fault or defect
condition that it detects on a pseudowire, Label Switched Path, or
Section.
This document specifies specific extensions to Bidirectional
Forwarding Detection (BFD) and methods for proactive Continuity
Check, Continuity Verification, and Remote Defect Indication for
MPLS-TP pseudowires, Label Switched Paths, and Sections using BFD as
extended by this memo.
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/rfc6428.
Allan, et al. Standards Track [Page 1]
RFC 6428 CC, CV, and RDI for MPLS-TP November 2011
Copyright Notice
Copyright (c) 2011 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.
Table of Contents
1. Introduction ....................................................3
2. Conventions Used in This Document ...............................3
2.1. Terminology ................................................3
2.2. Requirements Language ......................................5
3. MPLS-TP CC, Proactive CV, and RDI Mechanism Using BFD ...........5
3.1. Existing Capabilities ......................................5
3.2. CC, CV, and RDI Overview ...................................5
3.3. ACH Code Points for CC and Proactive CV ....................6
3.4. MPLS-TP BFD CC Message Format ..............................7
3.5. MPLS-TP BFD Proactive CV Message Format ....................8
3.5.1. Section MEP-ID ......................................9
3.5.2. LSP MEP-ID ..........................................9
3.5.3. PW End Point MEP-ID ................................10
3.6. BFD Session in MPLS-TP Terminology ........................10
3.7. BFD Profile for MPLS-TP ...................................11
3.7.1. Session Initiation and Modification ................12
3.7.2. Defect Entry Criteria ..............................13
3.7.3. Defect Entry Consequent Action .....................14
3.7.4. Defect Exit Criteria ...............................14
3.7.5. State Machines .....................................15
3.7.6. Configuration of MPLS-TP BFD Sessions ..............17
3.7.7. Discriminator Values ...............................17
4. Configuration Considerations ...................................18
5. IANA Considerations ............................................18
6. Security Considerations ........................................19
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