ALTO Multi-Domain Extension: Challenges, Existing Efforts and Next Steps
draft-xiang-alto-multidomain-extension-00

Document Type Active Internet-Draft (individual)
Authors Qiao Xiang  , Y. Yang 
Last updated 2020-11-02
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ALTO WG                                                         Q. Xiang
Internet-Draft                                                   Y. Yang
Intended status: Standards Track                         Yale University
Expires: 5 May 2021                                      1 November 2020

ALTO Multi-Domain Extension: Challenges, Existing Efforts and Next Steps
             draft-xiang-alto-multidomain-extension-00.txt

Abstract

   The emerging multi-domain applications, such as flexible interdomain
   routing, distributed, federated machine learning and multi-domain
   collaborative dataset transfer, can benefit substantially from
   getting information from networks.  The ALTO base protocol [RFC7285]
   provides a northbound interface for applications to retrieve the
   network information.  In particular, it specifies the communication
   between an ALTO client and an ALTO server, where the ALTO is
   implicitly assumed to be able to answer any query from the ALTO
   client.  However, it does not specify the cases when the network
   information are originated from multiple domains (i.e.,
   administrative entities or geographically partitions).  This document
   summarizes the discussion on the ALTO weekly meeting since IETF 108
   on how to extend ALTO to support multi-domain applications.  It
   identifies the key challenges for retrieving network information from
   multiple networks, reviews the existing efforts in the work group,
   and discusses the next steps to fully address the challenges.

Status of This Memo

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   This Internet-Draft will expire on 5 May 2021.

Xiang & Yang               Expires 5 May 2021                   [Page 1]
Internet-Draft              ALTO Multi-Domain              November 2020

Copyright Notice

   Copyright (c) 2020 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 (https://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
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   provided without warranty as described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   2
   3.  Extending ALTO to Multi-Domain: Challenges  . . . . . . . . .   3
   4.  Existing Efforts in the ALTO Working Group  . . . . . . . . .   4
   5.  ALTO Multi-Domain Extension: Basic Ideas  . . . . . . . . . .   4
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     6.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
     6.2.  Informative References  . . . . . . . . . . . . . . . . .   5
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   6

1.  Introduction

   The ALTO protocol [RFC7285] provides network information to
   applications so that applications can make network informed decisions
   to improve the performance.  Not only traditional applications such
   peer-to-peer systems, many recent, novel multi-domain applications,
   which orchestrate resources across multiple networks, can also
   benefit substantially from ALTO.

   Since the recharter discussion on IETF 108, there has been much
   interest and discussion on the ALTO weekly meetings to extend the
   ALTO base protocol to support multi-domain applications.  This
   document is a summary of the discussion on these meetings.  It
   outlines the challenges, reviews the existing efforts in the working
   group, and discuss the next steps to design ALTO multi-domain
   extensions.

2.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

Xiang & Yang               Expires 5 May 2021                   [Page 2]
Internet-Draft              ALTO Multi-Domain              November 2020

3.  Extending ALTO to Multi-Domain: Challenges
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