UDP Path for In-band Performance Measurement for Segment Routing Networks
draft-gandhi-spring-udp-pm-00

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Last updated 2018-05-30 (latest revision 2018-03-19)
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SPRING Working Group                                      R. Gandhi, Ed.
Internet-Draft                                               C. Filsfils
Intended Status: Standards Track                                 S. Soni
                                                              P. Khordoc
                                                                  Z. Ali
                                                     Cisco Systems, Inc.
                                                                D. Voyer
                                                              D. Bernier
                                                             Bell Canada
                                                              S. Salsano
                                        Universita di Roma "Tor Vergata"
                                                            P. L. Ventre
                                                                    CNIT
                                                            D. Steinberg
                                                    Steinberg Consulting
                                                          March 19, 2018

              UDP Path for In-band Performance Measurement for 
                          Segment Routing Networks
                     draft-gandhi-spring-udp-pm-00.txt

Abstract

   Segment Routing (SR) is applicable to both MPLS (SR-MPLS) and IPv6
   (SRv6) data planes.  This document specifies a procedure for using
   UDP path for sending and processing in-band Performance Measurement
   (PM) Probe query and response messages.  The procedure uses RFC 6374
   defined mechanisms for Delay and Loss performance measurement.  The
   procedure defined is applicable to IPv4, IPv6, SR-MPLS and SRv6 data
   planes.  This document also defines Return Path Segment List TLV for
   bidirectional performance measurement.

Status of This Memo

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Gandhi, et al.         Expires September 20, 2018               [Page 1]
Internet-Draft    UDP Path for PM for Segment Routing     March 19, 2018

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Conventions Used in This Document  . . . . . . . . . . . . . .  4
     2.1.  Requirements Language  . . . . . . . . . . . . . . . . . .  4
     2.2.  Abbreviations  . . . . . . . . . . . . . . . . . . . . . .  4
   3.  Probe Messages . . . . . . . . . . . . . . . . . . . . . . . .  4
     3.1.  Probe Query Message  . . . . . . . . . . . . . . . . . . .  5
       3.1.1.  Delay Measurement Query Message  . . . . . . . . . . .  5
       3.1.2.  Loss Measurement Query Message . . . . . . . . . . . .  5
       3.1.3.  Probe Query Message for SR Links . . . . . . . . . . .  6
       3.1.4.  In-band Probe Query Message for SR Policy  . . . . . .  6
         3.1.4.1.  In-band Probe Query Message for SR-MPLS Policy . .  6
         3.1.4.2.  In-band Probe Query Message for SRv6 Policy  . . .  7
         3.1.4.3.  In-band Probe Query Message for Segment of SRv6 
                   Policy . . . . . . . . . . . . . . . . . . . . . .  7
     3.2.  Probe Response Message . . . . . . . . . . . . . . . . . .  8
       3.2.1.  Probe Response Message for SR Links  . . . . . . . . .  8
       3.2.2.  One-way Performance Measurement  . . . . . . . . . . .  8
         3.2.2.1.  Probe Response Message to Controller . . . . . . .  9
     3.3.  Two-way Performance Measurement  . . . . . . . . . . . . .  9
       3.3.1.  Return Path Segment List TLV . . . . . . . . . . . . .  9
       3.3.2.  In-band Probe Response Message for SR-MPLS Policy  . . 10
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