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Advanced Multipath Use Cases and Design Considerations
draft-ietf-rtgwg-cl-use-cases-05

Document type: Active Internet-Draft (rtgwg WG)
Document stream: IETF
Last updated: 2014-02-14 (latest revision 2013-11-13)
Intended RFC status: Informational
Other versions: plain text, xml, pdf, html

IETF State: WG Consensus: Waiting for Write-Up
Consensus: Yes
Document shepherd: Jeff Tantsura

IESG State: I-D Exists
Responsible AD: (None)
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RTGWG                                                            S. Ning
Internet-Draft                                       Tata Communications
Intended status: Informational                                  A. Malis
Expires: May 17, 2014                                         Consultant
                                                              D. McDysan
                                                                 Verizon
                                                                 L. Yong
                                                              Huawei USA
                                                           C. Villamizar
                                       Outer Cape Cod Network Consulting
                                                       November 13, 2013

         Advanced Multipath Use Cases and Design Considerations
                    draft-ietf-rtgwg-cl-use-cases-05

Abstract

   Advanced Multipath is a formalization of multipath techniques
   currently in use in IP and MPLS networks and a set of extensions to
   existing multipath techniques.

   This document provides a set of use cases and design considerations
   for Advanced Multipath.  Existing practices are described.  Use cases
   made possible through Advanced Multipath extensions are described.

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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   and may be updated, replaced, or obsoleted by other documents at any
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 17, 2014.

Ning, et al.              Expires May 17, 2014                  [Page 1]
Internet-Draft        Advanced Multipath Use Cases         November 2013

Copyright Notice

   Copyright (c) 2013 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
   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.  Assumptions . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Multipath Foundation Use Cases  . . . . . . . . . . . . . . .   5
   5.  Advanced Multipath Use Cases  . . . . . . . . . . . . . . . .   7
     5.1.  Delay Sensitive Applications  . . . . . . . . . . . . . .   7
     5.2.  Large Volume of IP and LDP Traffic  . . . . . . . . . . .   8
     5.3.  Multipath and Packet Ordering . . . . . . . . . . . . . .   9
       5.3.1.  MPLS-TP in network edges only . . . . . . . . . . . .  10
       5.3.2.  Multipath at core LSP ingress/egress  . . . . . . . .  11
       5.3.3.  MPLS-TP as a MPLS client  . . . . . . . . . . . . . .  12
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   8.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  13
   9.  Informative References  . . . . . . . . . . . . . . . . . . .  13
   Appendix A.  Network Operator Practices and Protocol Usage  . . .  16
   Appendix B.  Existing Multipath Standards and Techniques  . . . .  18
     B.1.  Common Multpath Load Spliting Techniques  . . . . . . . .  19
     B.2.  Static and Dynamic Load Balancing Multipath . . . . . . .  20
     B.3.  Traffic Split over Parallel Links . . . . . . . . . . . .  20
     B.4.  Traffic Split over Multiple Paths . . . . . . . . . . . .  21
   Appendix C.  Characteristics of Transport in Core Networks  . . .  21
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  23

1.  Introduction

   Advanced Multipath requirements are specified in
   [I-D.ietf-rtgwg-cl-requirement].  An Advanced Multipath framework is
   defined in [I-D.ietf-rtgwg-cl-framework].

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