datatracker.ietf.org
Sign in
Version 5.6.2.p3, 2014-07-31
Report a bug

ALTO Cost Schedule
draft-randriamasy-alto-cost-schedule-03

Document type: Active Internet-Draft (individual)
Document stream: No stream defined
Last updated: 2014-02-14
Intended RFC status: Unknown
Other versions: plain text, pdf, html

Stream State:No stream defined
Document shepherd: No shepherd assigned

IESG State: I-D Exists
Responsible AD: (None)
Send notices to: No addresses provided

Network Working Group                                S. Randriamasy, Ed.
Internet-Draft                                  Alcatel-Lucent Bell Labs
Intended status: Experimental                                  N. Schwan
Expires: August 18, 2014
                                                       February 14, 2014

                           ALTO Cost Schedule
                draft-randriamasy-alto-cost-schedule-03

Abstract

   The goal of Application-Layer Traffic Optimization (ALTO) is to
   bridge the gap between network and applications by provisioning
   network related information.  This allows applications to make
   informed decisions, for example when selecting a target host from a
   set of candidates.  The ALTO problem statement [RFC5693] considers
   typical applications as file sharing, real-time communication and
   live streaming peer-to-peer networks.  Recently other use cases
   focused on Content Distribution Networks and Data Centers have
   emerged.

   The present draft proposes to extend the cost information provided by
   the ALTO protocol.  The purpose is to broaden the decision
   possibilities of applications to not only decide 'where' to connect
   to, but also 'when'.  This is useful to applications that have a
   degree of freedom on when to schedule data transfers, such as non-
   instantaneous data replication between data centers or service
   provisioning to end systems with irregular connectivity.  The draft
   therefore specifies a new cost mode, called the "schedule" mode.  In
   this mode the ALTO server offers cost maps that contain path ratings
   that are valid for a given timeframe (e.g. hourly) for a period of
   time (e.g. a day).  Besides the functional time-shift enhancement
   providing multi-timeframe cost values, the ALTO Cost Schedule also
   allows to save a number of ALTO transactions and thus resources on
   the ALTO server and clients.  Last, guidance to schedule application
   traffic can also efficiently help for load balancing and resources
   efficiency.

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 & Schwan     Expires August 18, 2014                [Page 1]
Internet-Draft             ALTO Cost Schedule              February 2014

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
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 18, 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
   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  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Use cases for ALTO Cost Schedule  . . . . . . . . . . . . . .   4
     2.1.  Bulk Data Transfer scheduling . . . . . . . . . . . . . .   5
     2.2.  Endsystems with limited connectivity or access to
           datacenters . . . . . . . . . . . . . . . . . . . . . . .   5
     2.3.  SDN Controller guided access to application endpoints . .   7
     2.4.  Large flow scheduling on extended ALTO topologies . . . .   9
     2.5.  Providing values for time-sensitve TE metrics . . . . . .  10
   3.  ALTO Cost Schedule extension  . . . . . . . . . . . . . . . .  10
     3.1.  Cost Schedule Attributes  . . . . . . . . . . . . . . . .  11
       3.1.1.  ALTO Cost-Mode: Schedule  . . . . . . . . . . . . . .  11
     3.2.  ALTO Capability: Cost-Scope . . . . . . . . . . . . . . .  11

[include full document text]