Path MTU Discovery Using Session Traversal Utilities for NAT (STUN)
draft-petithuguenin-tram-stun-pmtud-00

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TRAM                                                   M. Petit-Huguenin
Internet-Draft                                        Impedance Mismatch
Intended status: Standards Track                        January 05, 2015
Expires: July 9, 2015

  Path MTU Discovery Using Session Traversal Utilities for NAT (STUN)
                 draft-petithuguenin-tram-stun-pmtud-00

Abstract

   This document describes a Session Traversal Utilities for NAT (STUN)
   usage for discovering the path MTU between a client and a server.

Status of This Memo

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   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on July 9, 2015.

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   Copyright (c) 2015 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Petit-Huguenin            Expires July 9, 2015                  [Page 1]
Internet-Draft                 STUN PMTUD                   January 2015

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Probing Mechanisms  . . . . . . . . . . . . . . . . . . . . .   4
   4.  Simple Probing Mechanism  . . . . . . . . . . . . . . . . . .   4
     4.1.  Sending a Probe Request . . . . . . . . . . . . . . . . .   4
     4.2.  Receiving a Probe Request . . . . . . . . . . . . . . . .   4
     4.3.  Receiving a Probe Response  . . . . . . . . . . . . . . .   4
   5.  Complete Probing Mechanism  . . . . . . . . . . . . . . . . .   5
     5.1.  Sending the Probe Indications and Report Request  . . . .   5
     5.2.  Receiving an ICMP packet  . . . . . . . . . . . . . . . .   5
     5.3.  Receiving a Probe Indication and Report Request . . . . .   5
     5.4.  Receiving a Report Response . . . . . . . . . . . . . . .   6
     5.5.  Using Checksum as Packet Identifiers  . . . . . . . . . .   6
     5.6.  Using Sequential Numbers as Packet Identifiers  . . . . .   6
   6.  Probe Support Discovery Mechanisms  . . . . . . . . . . . . .   7
     6.1.  Implicit Mechanism  . . . . . . . . . . . . . . . . . . .   7
     6.2.  Probe Support Discovery with TURN . . . . . . . . . . . .   7
     6.3.  Probe Support Discovery with ICE  . . . . . . . . . . . .   7
   7.  New STUN Method . . . . . . . . . . . . . . . . . . . . . . .   7
   8.  New STUN Attributes . . . . . . . . . . . . . . . . . . . . .   7
     8.1.  IDENTIFIERS . . . . . . . . . . . . . . . . . . . . . . .   8
     8.2.  PMTUD-SUPPORTED . . . . . . . . . . . . . . . . . . . . .   8
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   11. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   8
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     12.1.  Normative References . . . . . . . . . . . . . . . . . .   8
     12.2.  Informative References . . . . . . . . . . . . . . . . .   9
   Appendix A.  Release notes  . . . . . . . . . . . . . . . . . . .   9
     A.1.  Modifications between draft-petithuguenin-tram-stun-
           pmtud-00 and draft-petithuguenin-behave-stun-pmtud-03 . .   9
     A.2.  Modifications between draft-petithuguenin-behave-stun-
           pmtud-03 and draft-petithuguenin-behave-stun-pmtud-02 . .   9
     A.3.  Modifications between draft-petithuguenin-behave-stun-
           pmtud-02 and draft-petithuguenin-behave-stun-pmtud-01 . .   9
     A.4.  Modifications between draft-petithuguenin-behave-stun-
           pmtud-01 and draft-petithuguenin-behave-stun-pmtud-00 . .  10
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Introduction

   The Packetization Layer Path MTU Discovery specification [RFC4821]
   describes a method to discover the path MTU but does not describe a
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