Detecting Multiprotocol Label Switched (MPLS) Data-Plane Failures
RFC 8029
| Document | Type |
RFC - Proposed Standard
(March 2017; Errata)
Updates RFC 1122
|
|
|---|---|---|---|
| Last updated | 2018-12-20 | ||
| Replaces | draft-smack-mpls-rfc4379bis | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Loa Andersson | ||
| Shepherd write-up | Show (last changed 2016-10-04) | ||
| IESG | IESG state | RFC 8029 (Proposed Standard) | |
| Consensus Boilerplate | Yes | ||
| Telechat date | |||
| Responsible AD | Deborah Brungard | ||
| Send notices to | "Loa Andersson" <loa@pi.nu> | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | RFC-Ed-Ack | ||
Internet Engineering Task Force (IETF) K. Kompella
Request for Comments: 8029 Juniper Networks, Inc.
Obsoletes: 4379, 6424, 6829, 7537 G. Swallow
Updates: 1122 C. Pignataro, Ed.
Category: Standards Track N. Kumar
ISSN: 2070-1721 Cisco
S. Aldrin
Google
M. Chen
Huawei
March 2017
Detecting Multiprotocol Label Switched (MPLS) Data-Plane Failures
Abstract
This document describes a simple and efficient mechanism to detect
data-plane failures in Multiprotocol Label Switching (MPLS) Label
Switched Paths (LSPs). It defines a probe message called an "MPLS
echo request" and a response message called an "MPLS echo reply" for
returning the result of the probe. The MPLS echo request is intended
to contain sufficient information to check correct operation of the
data plane and to verify the data plane against the control plane,
thereby localizing faults.
This document obsoletes RFCs 4379, 6424, 6829, and 7537, and updates
RFC 1122.
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/rfc8029.
Kompella, et al. Standards Track [Page 1]
RFC 8029 Detecting MPLS Data-Plane Failures March 2017
Copyright Notice
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Kompella, et al. Standards Track [Page 2]
RFC 8029 Detecting MPLS Data-Plane Failures March 2017
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1. Conventions . . . . . . . . . . . . . . . . . . . . . . . 5
1.2. Structure of This Document . . . . . . . . . . . . . . . 6
1.3. Scope of This Specification . . . . . . . . . . . . . . . 6
2. Motivation . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1. Use of Address Range 127/8 . . . . . . . . . . . . . . . 8
2.2. Router Alert Option . . . . . . . . . . . . . . . . . . . 10
3. Packet Format . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1. Return Codes . . . . . . . . . . . . . . . . . . . . . . 16
3.2. Target FEC Stack . . . . . . . . . . . . . . . . . . . . 17
3.2.1. LDP IPv4 Prefix . . . . . . . . . . . . . . . . . . . 19
3.2.2. LDP IPv6 Prefix . . . . . . . . . . . . . . . . . . . 19
3.2.3. RSVP IPv4 LSP . . . . . . . . . . . . . . . . . . . . 20
3.2.4. RSVP IPv6 LSP . . . . . . . . . . . . . . . . . . . . 20
3.2.5. VPN IPv4 Prefix . . . . . . . . . . . . . . . . . . . 21
3.2.6. VPN IPv6 Prefix . . . . . . . . . . . . . . . . . . . 22
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