Subject: [CDNi] White-label, wholesale and brokering WAS: New (-01) version of CDNI Use Cases drafts

From: <[email-masked]>
Date: Fri, 4 Feb 2011 14:41:58 +0000

In our effort to get the use case revision out promptly we dropped a couple of potential use cases. Id like to consider adding something along the lines of the following use case, potentially under the offload section or as a section on its own:

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White-label, Wholesale and Brokering

Some companies will desire to offer CDN functions under their own branding, but operated on their behalf by other organisations. Building dedicated CDNs is clearly not as cost effective as being able to virtualise a CDN to look to User Agents and CSPs as if it were multiple CDSPs. Although not strictly interconnection (since only one CDN is actually involved) this model of business will have specific requirements on the UA and CSP interfaces (to maintain the identity of the virtual CDSP), along with the use of interconnection APIs between virtual CDSPs.

An alternative is for one CDSP to operate some part of the CDN functions, but to offload the actual content storage and delivery (e.g. the surrogates) to another CDSP. For example, in this model a 'front-end' CDSP would acquire content and receive the initial routing requests from the user agent, along with compiling the logging for the CSP. Another 'back-end' CDSP operates the content storage and delivery (distribution) functions. Technically the 'back-end' CDSP could provide its own content management and request routing functions, or could expose bare distribution capabilities. This latter approach would require the externalisation of some of the distribution function internal APIs, including sharing knowledge about surrogate locations and capabilities that would otherwise be obfuscated by the CDN. Such interfaces could be developed separately to the initial work on full CDN-interconnection.

Brokering follows from the wholesale model, where a 'front' end' CDSP is able to direct content and requests to multiple CDSPs or storage and delivery capabilities from multiple operators.

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Trevor.

Trevor Burbridge
Network-Based Services Infrastructure | BT Innovate & Design
Tel: 01473 645115
Fax: 01473 640929

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From: [email-masked] [mailto:[email-masked]] On Behalf Of [email-masked]
Sent: 31 January 2011 13:29
To: [email-masked]
Subject: [CDNi] New (-01) version of CDNI Use Cases drafts

Dear all,

We have posted a new version of the CDNI Use Cases I-D, which can be found here:

http://www.ietf.org/id/draft-bertrand-cdni-use-cases-01.txt. It merges draft-bertrand-cdni-use-cases-00 and draft-watson-cdni-use-cases-00.

A summary of the changes:

- Merging of draft-bertrand-cdni-use-cases-00 and draft-watson-cdni-use-cases-00

- Update of the Use Cases description

- Addition of a section on "Discussion on Priorities for the Proposed Charter" to be worked out later according to the discussions on the mailing list

Looking forward to your feedback.

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Gilles

-----Message d'origine-----
De : [email-masked] [mailto:[email-masked]] De la part de [email-masked]
Envoyé : lundi 31 janvier 2011 14:00
À : [email-masked]
Objet : I-D Action:draft-bertrand-cdni-use-cases-01.txt

A New Internet-Draft is available from the on-line Internet-Drafts directories.

      Title           : Use Cases for Content Distribution Network Interconnection

      Author(s)       : G. Bertrand, et al.

      Filename        : draft-bertrand-cdni-use-cases-01.txt

      Pages           : 21

      Date            : 2011-01-31

Content Delivery Networks (CDNs) are commonly used for improving the footprint and the end-user experience of a content delivery service, at a reasonable cost.  This document outlines real world use-cases (not technical solutions) for interconnecting CDNs.  The intention is to motivate CDN Interconnection and to support the case for formation of a Working Group, which would work on the definition of standardized, inter-operable method(s) for interconnecting CDNs.

A URL for this Internet-Draft is:

http://www.ietf.org/internet-drafts/draft-bertrand-cdni-use-cases-01.txt

Internet-Drafts are also available by anonymous FTP at:

ftp://ftp.ietf.org/internet-drafts/

Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft.