Requirements for Hitless MPLS Path Segment Monitoring
RFC 8256

Received changes through RFC Editor sync (created alias RFC 8256, changed title to 'Requirements for Hitless MPLS Path Segment Monitoring', changed abstract to '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).', changed standardization level to Informational, changed state to RFC, added RFC published event at 2017-10-26, changed IESG state to RFC Published)