Residence Time Measurement in MPLS network
draft-ietf-mpls-residence-time-15

Document Type Active Internet-Draft (mpls WG)
Last updated 2017-03-20 (latest revision 2017-03-07)
Replaces draft-mirsky-mpls-residence-time
Stream IETF
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MPLS Working Group                                             G. Mirsky
Internet-Draft                                                 ZTE Corp.
Intended status: Standards Track                              S. Ruffini
Expires: September 8, 2017                                       E. Gray
                                                                Ericsson
                                                                J. Drake
                                                        Juniper Networks
                                                               S. Bryant
                                                                  Huawei
                                                           A. Vainshtein
                                                             ECI Telecom
                                                           March 7, 2017

               Residence Time Measurement in MPLS network
                   draft-ietf-mpls-residence-time-15

Abstract

   This document specifies a new Generic Associated Channel for
   Residence Time Measurement and describes how it can be used by time
   synchronization protocols within a MPLS domain.

   Residence time is the variable part of the propagation delay of
   timing and synchronization messages; knowing what this delay is for
   each message allows for a more accurate determination of the delay to
   be taken into account in applying the value included in a Precision
   Time Protocol event message.

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."

   This Internet-Draft will expire on September 8, 2017.

Mirsky, et al.          Expires September 8, 2017               [Page 1]
Internet-Draft         Residence Time Measurement             March 2017

Copyright Notice

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   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Conventions used in this document . . . . . . . . . . . .   3
       1.1.1.  Terminology . . . . . . . . . . . . . . . . . . . . .   3
       1.1.2.  Requirements Language . . . . . . . . . . . . . . . .   4
   2.  Residence Time Measurement  . . . . . . . . . . . . . . . . .   4
     2.1.  One-step Clock and Two-step Clock Modes . . . . . . . . .   5
       2.1.1.  RTM with Two-step Upstream PTP Clock  . . . . . . . .   6
       2.1.2.  Two-step RTM with One-step Upstream PTP Clock . . . .   7
   3.  G-ACh for Residence Time Measurement  . . . . . . . . . . . .   7
     3.1.  PTP Packet Sub-TLV  . . . . . . . . . . . . . . . . . . .   9
   4.  Control Plane Theory of Operation . . . . . . . . . . . . . .  10
     4.1.  RTM Capability  . . . . . . . . . . . . . . . . . . . . .  10
     4.2.  RTM Capability Sub-TLV  . . . . . . . . . . . . . . . . .  11
     4.3.  RTM Capability Advertisement in Routing Protocols . . . .  11
       4.3.1.  RTM Capability Advertisement in OSPFv2  . . . . . . .  11
       4.3.2.  RTM Capability Advertisement in OSPFv3  . . . . . . .  13
       4.3.3.  RTM Capability Advertisement in IS-IS . . . . . . . .  13
       4.3.4.  RTM Capability Advertisement in BGP-LS  . . . . . . .  13
     4.4.  RSVP-TE Control Plane Operation to Support RTM  . . . . .  14
       4.4.1.  RTM_SET TLV . . . . . . . . . . . . . . . . . . . . .  15
   5.  Data Plane Theory of Operation  . . . . . . . . . . . . . . .  20
   6.  Applicable PTP Scenarios  . . . . . . . . . . . . . . . . . .  20
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  21
     7.1.  New RTM G-ACh . . . . . . . . . . . . . . . . . . . . . .  21
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