Performance Measurement in Segment Routing Networks with MPLS Data Plane
draft-gandhi-spring-sr-mpls-pm-01

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Last updated 2018-06-09
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SPRING Working Group                                      R. Gandhi, Ed.
Internet-Draft                                               C. Filsfils
Intended Status: Informational                                   S. Soni
Expires: December 11, 2018                           Cisco Systems, Inc.
                                                                D. Voyer
                                                             Bell Canada
                                                              S. Salsano
                                        Universita di Roma "Tor Vergata"
                                                               P. Ventre
                                                                    CNIT
                                                            June 9, 2018

                      Performance Measurement in 
              Segment Routing Networks with MPLS Data Plane
                   draft-gandhi-spring-sr-mpls-pm-01 

Abstract

   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. 
   This document reviews how these mechanisms can be used for Delay and
   Loss Performance Measurements (PM) in Segment Routing (SR) networks
   with MPLS data plane (SR-MPLS), for both SR links and end-to-end SR
   Policies.  The measured performance values for SR links are used to
   compute extended metrics for delay and loss and are advertised in the
   network.

Status of This Memo

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Copyright Notice

 

Gandhi, et al.         Expires December 11, 2018                [Page 1]
Internet-Draft      SR-MPLS Performance Measurement         June 9, 2018

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Conventions Used in This Document  . . . . . . . . . . . . . .  3
     2.1.  Abbreviations  . . . . . . . . . . . . . . . . . . . . . .  3
     2.2.  Reference Topology . . . . . . . . . . . . . . . . . . . .  4
   3.  Probe Query and Response Packets . . . . . . . . . . . . . . .  5
     3.1.  Probe Packet Header for SR-MPLS Policies . . . . . . . . .  5
     3.2.  Probe Packet Header for SR-MPLS Links  . . . . . . . . . .  5
     3.3.  Probe Response Message for SR-MPLS Links and Policies  . .  6
       3.3.1.  One-way Measurement Probe Response Message . . . . . .  6
       3.3.2.  Two-way Measurement Probe Response Message . . . . . .  6
   4.  Performance Delay Measurement  . . . . . . . . . . . . . . . .  6
     4.1.  Delay Measurement Message Format . . . . . . . . . . . . .  6
     4.2.  Timestamp  . . . . . . . . . . . . . . . . . . . . . . . .  8
   5.  Performance Loss Measurement . . . . . . . . . . . . . . . . .  8
     5.1.  Loss Measurement Message Format  . . . . . . . . . . . . .  8
   6.  SR Link Metrics Advertisements . . . . . . . . . . . . . . . . 10
   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . 10
   8.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 10
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 10
     9.1.  Normative References . . . . . . . . . . . . . . . . . . . 10
     9.2.  Informative References . . . . . . . . . . . . . . . . . . 11
   Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . . . 12
   Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 12

 

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