ALTO Cost Calendar
draft-ietf-alto-cost-calendar-02

Document Type Active Internet-Draft (alto WG)
Last updated 2017-07-03
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Network Working Group                                     S. Randriamasy
Internet-Draft                                           Nokia Bell Labs
Intended status: Standards Track                                 R. Yang
Expires: January 4, 2018                                 Yale University
                                                                   Q. Wu
                                                                  Huawei
                                                                 L. Deng
                                                            China Mobile
                                                               N. Schwan
                                                      Thales Deutschland
                                                            July 3, 2017

                           ALTO Cost Calendar
                    draft-ietf-alto-cost-calendar-02

Abstract

   The goal of Application-Layer Traffic Optimization (ALTO) is to
   bridge the gap between network and applications by provisioning
   network related information in order to allow applications to make
   network informed decisions.  The present draft extends the ALTO cost
   information so as to broaden the decision possibilities of
   applications to not only decide 'where' to connect to, but also
   'when'.  This is useful to applications that need to schedule their
   data transfers and connections and have a degree of freedom to do so.
   ALTO guidance to schedule application traffic can also efficiently
   help for load balancing and resources efficiency.  Besides, the ALTO
   Cost Calendar allows to schedule the ALTO requests themselves and
   thus to save a number of ALTO transactions.

   This draft proposes new capabilities and attributes on filtered cost
   maps and endpoint costs enabling an ALTO Server to provide "Cost
   Calendars".  These capabilities are applicable to time-sensitive ALTO
   metrics.  With ALTO Cost Calendars, an ALTO Server exposes ALTO Cost
   Values in JSON arrays where each value corresponds to a given time
   interval.  The time intervals as well as other Calendar attributes
   are specified in the IRD and ALTO Server responses.

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 RFC 2119 [RFC2119].

Randriamasy, et al.      Expires January 4, 2018                [Page 1]
Internet-Draft             ALTO Cost Calendar                  July 2017

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
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
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   This Internet-Draft will expire on January 4, 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
   Provisions Relating to IETF Documents
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Overview of ALTO Cost Calendars . . . . . . . . . . . . . . .   4
     2.1.  ALTO Cost Calendar information features . . . . . . . . .   5
     2.2.  ALTO Calendar design characteristics  . . . . . . . . . .   6
       2.2.1.  ALTO Cost Calendar for all cost modes . . . . . . . .   6
       2.2.2.  Compatibility with legacy ALTO Clients  . . . . . . .   7
   3.  ALTO Calendar specification: IRD extensions . . . . . . . . .   7
     3.1.  Calendar attributes in the IRD resources capabilities . .   7
     3.2.  Calendars in a delegate IRD . . . . . . . . . . . . . . .   9
     3.3.  Example IRD with  ALTO Cost Calendars . . . . . . . . . .   9
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