Performance Measurement for Segment Routing Networks with MPLS Data Plane

Document Type Replaced Internet-Draft (individual)
Authors Rakesh Gandhi  , Clarence Filsfils  , Dan Voyer  , Stefano Salsano  , Mach Chen 
Last updated 2019-10-04
Replaces draft-gandhi-spring-sr-mpls-pm
Replaced by draft-gandhi-mpls-rfc6374-sr
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Segment Routing (SR) leverages the source routing paradigm. RFC 6374 specifies protocol mechanisms to enable the efficient and accurate measurement of packet loss, one-way and two-way delay, as well as related metrics such as delay variation in MPLS networks using probe messages. This document utilizes these mechanisms for Performance Delay and Loss Measurements in Segment Routing (SR) networks with MPLS data plane (SR-MPLS), for both SR links and end-to-end SR Policies. In addition, this document defines Return Path TLV for two-way performance measurement and Block Number TLV for loss measurement.


Rakesh Gandhi (
Clarence Filsfils (
Dan Voyer (
Stefano Salsano (
Mach Chen (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)