RFC 8256 on Requirements for Hitless MPLS Path Segment Monitoring

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        RFC 8256

        Title:      Requirements for Hitless MPLS Path 
                    Segment Monitoring 
        Author:     A. D'Alessandro, 
                    L. Andersson,
                    S. Ueno, 
                    K. Arai,
                    Y. Koike
        Status:     Informational
        Stream:     IETF
        Date:       October 2017
        Mailbox:    alessandro.dalessandro@telecomitalia.it, 
                    loa@pi.nu, 
                    ueno@nttv6.jp,  
                    arai.kaoru@lab.ntt.co.jp, 
                    y.koike@vcd.nttbiz.com
        Pages:      16
        Characters: 34052 
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-mpls-tp-temporal-hitless-psm-14.txt

        URL:        https://www.rfc-editor.org/info/rfc8256

        DOI:        10.17487/RFC8256

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).

This document is a product of the Multiprotocol Label Switching Working Group of the IETF.


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It does not specify an Internet standard of any kind. Distribution of
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