Residence Time Measurment in MPLS network
draft-mirsky-mpls-residence-time-00

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Last updated 2013-10-21
Replaced by rfc8169, draft-ietf-mpls-residence-time
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MPLS Working Group                                             G. Mirsky
Internet-Draft                                                  Ericsson
Intended status: Standards Track                                J. Drake
Expires: April 24, 2014                                      K. Holleman
                                                        Juniper Networks
                                                               S. Bryant
                                                           Cisco Systems
                                                           A. Vainshtein
                                                             ECI Telecom
                                                        October 21, 2013

               Residence Time Measurment in MPLS network
                  draft-mirsky-mpls-residence-time-00

Abstract

   This document specifies G-ACh based Residence Time Measurement and
   how it can be used by time synchronization protocols being
   transported over MPLS domain.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
     1.1.  Conventions used in this document . . . . . . . . . . . . . 3
       1.1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . 3
       1.1.2.  Requirements Language . . . . . . . . . . . . . . . . . 3
   2.  Residence Time Measurement  . . . . . . . . . . . . . . . . . . 4
   3.  G-ACh for Residence Time Measurement  . . . . . . . . . . . . . 4
   4.  Theory of Operation . . . . . . . . . . . . . . . . . . . . . . 4
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 5
   6.  Security Considerations . . . . . . . . . . . . . . . . . . . . 5
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 5
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 6
     8.1.  Normative References  . . . . . . . . . . . . . . . . . . . 6
     8.2.  Informative References  . . . . . . . . . . . . . . . . . . 6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . . 6

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1.  Introduction

   Time synchronization protocols, Network Time Protocol version 4
   (NTPv4) [RFC5905] and Precision Time Protocol (PTP) Version 2, a.k.a.
   IEEE-1588 v.2, can be used to syncronized clocks across network
   domain.  In some scenarios calculation of time packet of time
   syncronization protocol spends within a node, called Resident Time,
   can improve accuracy of clock syncronization.  This document defines
   new Generalized Associated Channel (G-ACh) that can be used in Multi-
   Protocol Label Switching (MPLS) network to measure Residence Time
   over Label Switched Path (LSP) or Pseudo-wire (PW).  Transport of
   packets of a time synchronization protocol over MPLS domain is
   outside of scope of this document.

1.1.  Conventions used in this document

1.1.1.  Terminology

   MPLS: Multi-Protocol Label Switching

   ACH: Associated Channel

   TTL: Time-to-Live

   G-ACh: Generic Associated Channel

   GAL: Generic Associated Channel Label

   NTP: Network Time Protocol

   PTP: Precision Time Protocol

   PW: Pseudo-wire

   LSP: Label Switched Path

   OAM: Operations, Administration, and Maintenance

1.1.2.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
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