Accessing Cloud Services
draft-stein-cloud-access-00

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Last updated 2012-03-05
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Network Working Group                                           Y. Stein
Internet-Draft                                                 Y. Gittik
Intended status: Informational                   RAD Data Communications
Expires: September 5, 2012                                     M. Morrow
                                                                 L. Fang
                                                           Cisco Systems
                                                           W. Henderickx
                                                          Alcatel-Lucent
                                                           March 4, 2012

                        Accessing Cloud Services
                    draft-stein-cloud-access-00.txt

Abstract

   Cloud services are revolutionizing the way computational resources
   are provided, but at the expense of requiring an even more
   revolutionary overhaul of the networking infrastructure needed to
   deliver them.  Much recent work has focused on intra- and inter-
   datacenter connectivity requirements and architectures, while the
   "access segment" connecting the cloud services user to the datacenter
   still needs to be addressed.  In this draft we consider tighter
   integration between the network and the datacenter, in order to
   improve end-to-end Quality of Experience, while minimizing both
   networking and computational resource costs.

Status of this Memo

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   This Internet-Draft will expire on September 5, 2012.

Copyright Notice

   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Stein, et al.           Expires September 5, 2012               [Page 1]
Internet-Draft          Accessing Cloud Services              March 2012

   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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
   2.  Model of Existing Cloud Services  . . . . . . . . . . . . . . . 5
   3.  Optimized Cloud Access  . . . . . . . . . . . . . . . . . . . . 7
   4.  Security Considerations . . . . . . . . . . . . . . . . . . . . 8
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 8
   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . . 9

Stein, et al.           Expires September 5, 2012               [Page 2]
Internet-Draft          Accessing Cloud Services              March 2012

1.  Introduction

   Cloud services replace computational power and storage resources
   traditionally located under the user's table or on the user's in-
   house servers, with resources located in remote datacenters.  The
   cloud resources may be raw computing power and storage
   (Infrastructure as a Service - IaaS), or computer systems along with
   supported operating systems and tools (Platform as a Service - PaaS),
   or even fully developed applications (Software as a Service - SaaS).
   The inter- and intra-datacenter networking architectures needed to
   support cloud services are described in
   [I-D.bitar-datacenter-vpn-applicability].

   The cloud service user connects to cloud resources over a networking
   infrastructure.  Today this infrastructure is often the public
   Internet, but (for reasons to be explained below) is preferably a
   network maintained by a Network Service Provider (N-SP).  The
   datacenter(s) may belong to the N-SP (which is the case considered by
   [I-D.masum-chari-shc]), or may belong to a separate Cloud Service
   Provider (C-SP), and accessible from the N-SP's network.

   The advantages of cloud services over conventional IT services
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