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Happy Eyeballs Extension for Multiple Interfaces
draft-ietf-mif-happy-eyeballs-extension-04

Document type: Active Internet-Draft (mif WG)
Document stream: IETF
Last updated: 2014-03-03
Intended RFC status: Unknown
Other versions: plain text, pdf, html

IETF State: Dead WG Document
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Document shepherd: No shepherd assigned

IESG State: I-D Exists
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Internet Engineering Task Force                                  G. Chen
Internet-Draft                                              China Mobile
Intended status: Informational                               C. Williams
Expires: September 5, 2014                                    Consultant
                                                                 D. Wing
                                                          A. Yourtchenko
                                                     Cisco Systems, Inc.
                                                           March 4, 2014

            Happy Eyeballs Extension for Multiple Interfaces
               draft-ietf-mif-happy-eyeballs-extension-04

Abstract

   Currently the interface selection in multi-interface environment is
   exclusive - only one interface can be used at the time, frequently
   needing manual intervention.  Happy Eyeballs in MIF would make the
   selection process smoother by using the connectivity checks over a
   pre-filtered interfaces according to defined policy.  This would
   choose "best" interface with an automatic fallback.

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 September 5, 2014.

Copyright Notice

   Copyright (c) 2014 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
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents

Chen, et al.            Expires September 5, 2014               [Page 1]
Internet-Draft             happy-eyeballs-mif                 March 2014

   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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Problem Statement . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Happiness Parameters  . . . . . . . . . . . . . . . . . . . .   4
   4.  HE Behavior in MIF  . . . . . . . . . . . . . . . . . . . . .   5
     4.1.  First Step, Filter  . . . . . . . . . . . . . . . . . . .   6
     4.2.  Second Step, Sort . . . . . . . . . . . . . . . . . . . .   6
   5.  Implementation Framework  . . . . . . . . . . . . . . . . . .   7
   6.  Additional Considerations . . . . . . . . . . . . . . . . . .   8
     6.1.  Usage Scope . . . . . . . . . . . . . . . . . . . . . . .   8
     6.2.  Fallback Timeout  . . . . . . . . . . . . . . . . . . . .   8
     6.3.  DNS Selections  . . . . . . . . . . . . . . . . . . . . .   9
     6.4.  Flow Continuity . . . . . . . . . . . . . . . . . . . . .  10
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  10
     10.2.  Informative References . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   In multiple interface context, the problems raised by hosts with
   multiple interfaces have been discussed.  The MIF problem
   statement[RFC6418] described the various issues when using a wrong
   domain selection on a MIF node.  Happy Eyeballs (HE) [RFC6555]
   described how a dual-stack client can determine the functioning path
   to a dual-stack server.  It's using stateful algorithm to help
   applications quickly determine if IPv6 or IPv4 is the most fast path
   to connect a server.  That is a good method to achieve smart path
   selection.  However, the assumption is a single-homed context.  The
   interaction with multiple interfaces is deferred for further study.

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