RFC 3466 (rfc3466) - Page 1 of 17


A Model for Content Internetworking (CDI)



Alternative Format: Original Text Document



Network Working Group                                             M. Day
Request for Comments: 3466                                         Cisco
Category: Informational                                          B. Cain
                                                                Storigen
                                                            G. Tomlinson
                                                         Tomlinson Group
                                                              P. Rzewski
                                                   Media Publisher, Inc.
                                                           February 2003


               A Model for Content Internetworking (CDI)

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2003).  All Rights Reserved.

Abstract

   Content (distribution) internetworking (CDI) is the technology for
   interconnecting content networks, sometimes previously called
   "content peering" or "CDN peering".  A common vocabulary helps the
   process of discussing such interconnection and interoperation.  This
   document introduces content networks and content internetworking, and
   defines elements for such a common vocabulary.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . .  2
   2.  Content Networks . . . . . . . . . . . . . . . . . . . . . .  2
       2.1   Problem Description  . . . . . . . . . . . . . . . . .  3
       2.2   Caching Proxies. . . . . . . . . . . . . . . . . . . .  4
       2.3   Server Farms . . . . . . . . . . . . . . . . . . . . .  5
       2.4   Content Distribution Networks. . . . . . . . . . . . .  6
             2.4.1 Historic Evolution of CDNs . . . . . . . . . . .  8
             2.4.2 Describing CDN Value: Scale and Reach. . . . . .  8
   3.  Content Network Model Terms  . . . . . . . . . . . . . . . .  9
   4.  Content Internetworking  . . . . . . . . . . . . . . . . . . 12
   5.  Content Internetworking Model Terms  . . . . . . . . . . . . 12
   6.  Security Considerations  . . . . . . . . . . . . . . . . . . 15
   7.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 15
   8.  Normative References . . . . . . . . . . . . . . . . . . . . 16



Day, et al.                  Informational