IPv6 Performance and Diagnostic Metrics (PDM) Destination Option
draft-ietf-ippm-6man-pdm-option-04

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Document Type Active Internet-Draft (ippm WG)
Last updated 2016-09-13
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication
Document shepherd Al Morton
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Responsible AD Spencer Dawkins
Send notices to "Bill Cerveny" <ietf@wjcerveny.com>, "Al Morton" <acmorton@att.com>
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    IPv6 Performance and Diagnostic Metrics (PDM) Destination Option
                   draft-ietf-ippm-6man-pdm-option-04

Abstract

   To assess performance problems,  measurements based on optional
   sequence numbers and timing may be embedded in each packet.  Such
   measurements may be interpreted in real-time or after the fact. An
   implementation of the existing IPv6 Destination Options extension
   header, the Performance and Diagnostic Metrics (PDM) Destination
   Options extension header as well as the field limits, calculations,
   and usage of the PDM in measurement are included in this document.

Status of this Memo

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

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
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Copyright and License Notice

   Copyright (c) 2016 IETF Trust and the persons identified as the
   document authors. All rights reserved.

   IETF Trust Legal Provisions of 28-dec-2009, Section 6.b(i), paragraph
   3: 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.     

 

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INTERNET DRAFT        ietf-ippm-6man-pdm-option-04    September 13, 2016

Table of Contents

   1  Background  . . . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.1 Terminology  . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.2 End User Quality of Service (QoS)  . . . . . . . . . . . . .  4
     1.3 Need for a Packet Sequence Number  . . . . . . . . . . . . .  5
     1.4 Rationale for defined solution . . . . . . . . . . . . . . .  5
     1.5 PDM Works in Collaboration with Other Headers  . . . . . . .  6
     1.6 IPv6 Transition Technologies . . . . . . . . . . . . . . . .  6
   2 Measurement Information Derived from PDM . . . . . . . . . . . .  6
     2.1 Round-Trip Delay . . . . . . . . . . . . . . . . . . . . . .  7
     2.2 Server Delay . . . . . . . . . . . . . . . . . . . . . . . .  7
   3 Performance and Diagnostic Metrics Destination Option Layout . .  7
     3.1 Destination Options Header . . . . . . . . . . . . . . . . .  7
     3.2 Performance and Diagnostic Metrics Destination Option  . . .  7
     3.3 Header Placement . . . . . . . . . . . . . . . . . . . . . . 10
     3.4 Header Placement Using IPSec ESP Mode  . . . . . . . . . . . 11
     3.5 Implementation Considerations  . . . . . . . . . . . . . . . 12
     3.6 Dynamic Configuration Options  . . . . . . . . . . . . . . . 12
     3.6 5-tuple Aging  . . . . . . . . . . . . . . . . . . . . . . . 12
   4 Considerations of Timing Representation  . . . . . . . . . . . . 12
     4.1 Encoding the Delta-Time Values . . . . . . . . . . . . . . . 12
     4.2 Timer registers are different on different hardware  . . . . 13
     4.3 Timer Units on Other Systems . . . . . . . . . . . . . . . . 13
     4.4 Time Base  . . . . . . . . . . . . . . . . . . . . . . . . . 14
     4.5 Timer-value scaling  . . . . . . . . . . . . . . . . . . . . 14
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