UDP Path for In-band Performance Measurement for Segment Routing Networks
draft-gandhi-spring-udp-pm-02

Document Type Active Internet-Draft (individual)
Last updated 2018-09-14
Stream (None)
Intended RFC status (None)
Formats plain text pdf html bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
SPRING Working Group                                      R. Gandhi, Ed.
Internet-Draft                                               C. Filsfils
Intended Status: Standards Track                     Cisco Systems, Inc.
Expires: March 18, 2019                                         D. Voyer
                                                             Bell Canada
                                                              S. Salsano
                                        Universita di Roma "Tor Vergata"
                                                            P. L. Ventre
                                                                    CNIT
                                                                 M. Chen
                                                                  Huawei
                                                      September 14, 2018

                          UDP Path for In-band 
          Performance Measurement for Segment Routing Networks
                     draft-gandhi-spring-udp-pm-02

Abstract

   Segment Routing (SR) is applicable to both Multiprotocol Label
   Switching (SR-MPLS) and IPv6 (SRv6) data planes.  This document
   specifies procedures for using UDP path for sending and processing
   in-band probe query and response messages for Performance
   Measurement.  The procedure uses the RFC 6374 defined mechanisms for
   Delay and Loss performance measurement.  The procedure specified is
   applicable to SR-MPLS and SRv6 data planes for both links and
   end-to-end measurement for SR Policies.  This document also defines
   mechanisms for handling Equal Cost Multipaths (ECMPs) for SR
   Policies.  In addition, this document defines Return Path Segment
   List TLV for two-way performance measurement and Block Number TLV for
   loss measurement.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."
 

Gandhi, et al.           Expires March 18, 2019                 [Page 1]
Internet-Draft     UDP Path for PM in Segment Routing September 14, 2018

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Conventions Used in This Document  . . . . . . . . . . . . . .  4
     2.1.  Requirements Language  . . . . . . . . . . . . . . . . . .  4
     2.2.  Abbreviations  . . . . . . . . . . . . . . . . . . . . . .  4
     2.3.  Reference Topology . . . . . . . . . . . . . . . . . . . .  5
   3.  Probe Messages . . . . . . . . . . . . . . . . . . . . . . . .  6
     3.1.  Probe Query Message  . . . . . . . . . . . . . . . . . . .  6
       3.1.1.  Delay Measurement Probe Query Message  . . . . . . . .  6
       3.1.2.  Loss Measurement Probe Query Message . . . . . . . . .  7
         3.1.2.1.  Block Number TLV . . . . . . . . . . . . . . . . .  8
       3.1.3.  In-band Probe Query for SR Links . . . . . . . . . . .  8
       3.1.4.  In-band Probe Query for End-to-end Measurement of SR
               Policy . . . . . . . . . . . . . . . . . . . . . . . .  8
         3.1.4.1.  In-band Probe Query Message for SR-MPLS Policy . .  8
         3.1.4.2.  In-band Probe Query Message for SRv6 Policy  . . .  9
     3.2.  Probe Response Message . . . . . . . . . . . . . . . . . .  9
       3.2.1.  One-way Measurement for SR Link and end-to-end SR 
               Policy . . . . . . . . . . . . . . . . . . . . . . . . 10
         3.2.1.1.  Probe Response Message to Controller . . . . . . . 11
       3.2.2.  Two-way Measurement for SR Links . . . . . . . . . . . 11
       3.2.3.  Two-way End-to-end Measurement of SR Policy  . . . . . 11
         3.2.3.1.  Return Path Segment List TLV . . . . . . . . . . . 11
Show full document text