Path MTU Discovery Using Session Traversal Utilities for NAT (STUN)
draft-ietf-tram-stun-pmtud-06

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TRAM                                                   M. Petit-Huguenin
Internet-Draft                                        Impedance Mismatch
Intended status: Standards Track                            G. Salgueiro
Expires: March 5, 2018                                             Cisco
                                                       September 1, 2017

  Path MTU Discovery Using Session Traversal Utilities for NAT (STUN)
                     draft-ietf-tram-stun-pmtud-06

Abstract

   This document describes a Session Traversal Utilities for NAT (STUN)
   Usage for Path MTU Discovery (PMTUD) between a client and a server.

Status of This Memo

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

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   This Internet-Draft will expire on March 5, 2018.

Copyright Notice

   Copyright (c) 2017 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
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   described in the Simplified BSD License.

Petit-Huguenin & SalgueiroExpires March 5, 2018                 [Page 1]
Internet-Draft                 STUN PMTUD                 September 2017

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Overview of Operations  . . . . . . . . . . . . . . . . . . .   3
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
   4.  Probing Mechanisms  . . . . . . . . . . . . . . . . . . . . .   5
     4.1.  Simple Probing Mechanism  . . . . . . . . . . . . . . . .   6
       4.1.1.  Sending a Probe Request . . . . . . . . . . . . . . .   6
       4.1.2.  Receiving a Probe Request . . . . . . . . . . . . . .   6
       4.1.3.  Receiving a Probe Response  . . . . . . . . . . . . .   7
     4.2.  Complete Probing Mechanism  . . . . . . . . . . . . . . .   7
       4.2.1.  Sending the Probe Indications and Report Request  . .   7
       4.2.2.  Receiving an ICMP Packet  . . . . . . . . . . . . . .   8
       4.2.3.  Receiving a Probe Indication and Report Request . . .   8
       4.2.4.  Receiving a Report Response . . . . . . . . . . . . .   9
       4.2.5.  Using Checksums as Packet Identifiers . . . . . . . .   9
       4.2.6.  Using Sequence Numbers as Packet Identifiers  . . . .  10
   5.  Probe Support Signaling Mechanisms  . . . . . . . . . . . . .  10
     5.1.  Explicit Probe Support Signaling Mechanism  . . . . . . .  11
     5.2.  Implicit Probe Support Signaling Mechanism  . . . . . . .  11
   6.  STUN Attributes . . . . . . . . . . . . . . . . . . . . . . .  11
     6.1.  IDENTIFIERS . . . . . . . . . . . . . . . . . . . . . . .  11
     6.2.  PMTUD-SUPPORTED . . . . . . . . . . . . . . . . . . . . .  11
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
     8.1.  New STUN Methods  . . . . . . . . . . . . . . . . . . . .  12
     8.2.  New STUN Attributes . . . . . . . . . . . . . . . . . . .  12
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  12
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  13
   Appendix A.  Release Notes  . . . . . . . . . . . . . . . . . . .  13
     A.1.  Modifications between draft-ietf-tram-stun-pmtud-06 and
           draft-ietf-tram-stun-pmtud-05 . . . . . . . . . . . . . .  13
     A.2.  Modifications between draft-ietf-tram-stun-pmtud-05 and
           draft-ietf-tram-stun-pmtud-04 . . . . . . . . . . . . . .  14
     A.3.  Modifications between draft-ietf-tram-stun-pmtud-04 and
           draft-ietf-tram-stun-pmtud-03 . . . . . . . . . . . . . .  14
     A.4.  Modifications between draft-ietf-tram-stun-pmtud-03 and
           draft-ietf-tram-stun-pmtud-02 . . . . . . . . . . . . . .  14
     A.5.  Modifications between draft-ietf-tram-stun-pmtud-02 and
           draft-ietf-tram-stun-pmtud-01 . . . . . . . . . . . . . .  15