Requirements for Hitless MPLS Path Segment Monitoring
RFC 8256
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Type |
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RFC - Informational
(October 2017; No errata)
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Last updated |
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2017-10-26
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Replaces |
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draft-koike-mpls-tp-temporal-hitless-psm
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Stream |
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IETF
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Formats |
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plain text
html
pdf
htmlized
bibtex
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Reviews |
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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Dave Sinicrope
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Shepherd write-up |
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Show
(last changed 2017-03-28)
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| IESG |
IESG state |
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RFC 8256 (Informational)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Deborah Brungard
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Send notices to |
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draft-ietf-mpls-tp-temporal-hitless-psm@ietf.org, "David Sinicrope" <david.sinicrope@ericsson.com>
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| IANA |
IANA review state |
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Version Changed - Review Needed
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IANA action state |
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No IANA Actions
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Internet Engineering Task Force (IETF) A. D'Alessandro
Request for Comments: 8256 Telecom Italia
Category: Informational L. Andersson
ISSN: 2070-1721 Huawei Technologies
S. Ueno
NTT Communications
K. Arai
Y. Koike
NTT
October 2017
Requirements for Hitless MPLS Path Segment Monitoring
Abstract
One of the most important Operations, Administration, and Maintenance
(OAM) capabilities for transport-network operation is fault
localization. An in-service, on-demand path segment monitoring
function of a transport path is indispensable, particularly when the
service monitoring function is activated only between endpoints.
However, the current segment monitoring approach defined for MPLS
(including the MPLS Transport Profile (MPLS-TP)) in RFC 6371
"Operations, Administration, and Maintenance Framework for MPLS-Based
Transport Networks" has drawbacks. This document provides an
analysis of the existing MPLS-TP OAM mechanisms for the path segment
monitoring and provides requirements to guide the development of new
OAM tools to support Hitless Path Segment Monitoring (HPSM).
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 7841.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
https://www.rfc-editor.org/info/rfc8256.
D'Alessandro, et al. Informational [Page 1]
RFC 8256 Hitless Path Segment Monitoring October 2017
Copyright Notice
Copyright (c) 2017 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
(https://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 . . . . . . . . . . . . . . . . . . . . . . . 4
3. Problem Statement . . . . . . . . . . . . . . . . . . . . . . 4
4. Requirements for HPSM . . . . . . . . . . . . . . . . . . . . 8
4.1. Backward Compatibility . . . . . . . . . . . . . . . . . 8
4.2. Non-Intrusive Segment Monitoring . . . . . . . . . . . . 8
4.3. Monitoring Multiple Segments . . . . . . . . . . . . . . 9
4.4. Monitoring Single and Multiple Levels . . . . . . . . . . 9
4.5. HPSM and End-to-End Proactive Monitoring Independence . . 10
4.6. Monitoring an Arbitrary Segment . . . . . . . . . . . . . 10
4.7. Fault while HPSM Is Operational . . . . . . . . . . . . . 11
4.8. HPSM Manageability . . . . . . . . . . . . . . . . . . . 13
4.9. Supported OAM Functions . . . . . . . . . . . . . . . . . 13
5. Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6. Security Considerations . . . . . . . . . . . . . . . . . . . 14
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 14
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.1. Normative References . . . . . . . . . . . . . . . . . . 14
8.2. Informative References . . . . . . . . . . . . . . . . . 15
Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 15
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 16
D'Alessandro, et al. Informational [Page 2]
RFC 8256 Hitless Path Segment Monitoring October 2017
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