Anycast CDNS revisited

Because it is an integral part of the Internet routing apparatus, and because it allows multiple instances of the same service to be "naturally" discovered, IP Anycast has many attractive features for any service that involve the replication of multiple instances across the Internet. While briefly considered as an enabler when content distribution networks (CDNs) first emerged, the use of IP Anycast was deemed infeasible in that environment. The main reasons for this decision were the lack of load awareness of IP Anycast and unwanted side effects of Internet routing changes on the IP Anycast mechanism. Prompted by recent developments in route control technology, as well as a better understanding of the behavior of IP Anycast in operational settings, we revisit this decision and propose a load-aware IP Anycast CDN architecture that addresses these concerns while benefiting from inherent IP Anycast features. Our architecture makes use of route control mechanisms to take server...

• Type: Conference
• Year: 2008
• Where: WWW
• Authors: Hussein A. Alzoubi, Seungjoon Lee, Michael Rabinovich, Oliver Spatscheck, Jacobus E. van der Merwe
• Keywords: Inherent Ip, Internet Technology, IP Anycast, IP Anycast Mechanism, WWW 2008