DetNet Packet Loss and Delay Performance Measurement
draft-chen-detnet-loss-delay-01

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Last updated 2018-10-22
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Network Working Group                                            M. Chen
Internet-Draft                                                  A. Malis
Intended status: Standards Track                                  Huawei
Expires: April 26, 2019                                 October 23, 2018

          DetNet Packet Loss and Delay Performance Measurement
                    draft-chen-detnet-loss-delay-01

Abstract

   Deterministic Networking (DetNet) is defined to provide end-to-end
   bounded latency and extremely low packet loss rates for critical
   flows.  It's important to measure and monitor the packet loss rates
   and end-to-end delay and delay variation of a DetNet flow path, which
   allows evaluation of whether the Service Level Agreements (SLA) of
   the provided DetNet services are satisfied.  These metrics are also
   useful in network/traffic planning, trouble shooting, and network
   performance evaluation.

   This document defines protocol mechanisms to support passive
   Performance Measurement (PM) for DetNet service.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in
   BCP14 [RFC2119][RFC8174] when, and only when, they appear in all
   capitals, as shown here.

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
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   This Internet-Draft will expire on April 26, 2019.

Chen & Malis             Expires April 26, 2019                 [Page 1]
Internet-Draft                  DetNet PM                   October 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
   (https://trustee.ietf.org/license-info) in effect on the date of
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  DetNet Control Word based PM  . . . . . . . . . . . . . . . .   3
     2.1.  Packet Loss Measurement . . . . . . . . . . . . . . . . .   4
     2.2.  Packet Delay Measurement  . . . . . . . . . . . . . . . .   5
     2.3.  Alternative Solutions to the "D/L" Bits . . . . . . . . .   6
   3.  PM for IP-based Encapsulation . . . . . . . . . . . . . . . .   6
   4.  Extensions to RFC6374 . . . . . . . . . . . . . . . . . . . .   7
     4.1.  Measurement Interval TLV  . . . . . . . . . . . . . . . .   7
     4.2.  DetNet Control Word TLV . . . . . . . . . . . . . . . . .   7
     4.3.  Service Label TLV . . . . . . . . . . . . . . . . . . . .   8
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   Deterministic Networking (DetNet) [I-D.ietf-detnet-architecture] can
   provide end-to-end bounded latency and extremely low packet loss
   rates for critical flows.  This achieved by dedicating network
   resources (e.g., link bandwidth and queue buffering) to DetNet flows,
   and by replicating packets along multiple paths.

   It's important to measure and monitor the packet loss rate and one-
   way delay and delay variation of a DetNet flow path in order to
   evaluate whether the Service Level Agreements (SLA) of the provided
   DetNet services are satisfied.  These metrics are also useful in

Chen & Malis             Expires April 26, 2019                 [Page 2]
Internet-Draft                  DetNet PM                   October 2018
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