Content Distribution Network Interconnection (CDNI) Problem Statement
Ben Niven-Jenkins, François Le Faucheur, Nabil N. Bitar · 2012
Content Delivery Networks (CDNs) provide numerous benefits for cacheable content: reduced delivery cost, improved quality of experience for End Users, and increased robustness of delivery.For these reasons, they are frequently used for large-scale content delivery.As a result, existing CDN Providers are scaling up their infrastructure, and many Network Service Providers (NSPs) are deploying their own CDNs.It is generally desirable that a given content item can be delivered to an End User regardless of that End User's location or attachment network.This is the motivation for interconnecting standalone CDNs so they can interoperate as an open content delivery infrastructure for the end-to-end delivery of content from Content Service Providers (CSPs) to End Users.However, no standards or open specifications currently exist to facilitate such CDN Interconnection.The goal of this document is to outline the problem area of CDN Interconnection for the IETF CDNI (CDN Interconnection) working group. Status of This MemoThis document is not an Internet Standards Track specification; it is published for informational purposes.This document is a product of the Internet Engineering Task Force (IETF).It represents the consensus of the IETF community.It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG).Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 5741.