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Content delivery network system and method for building the same

  • US 20020116481A1
  • Filed: 02/19/2002
  • Published: 08/22/2002
  • Est. Priority Date: 02/20/2001
  • Status: Active Grant
First Claim
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1. A content delivery network system, comprising:

  • a communication network;

    a first network node for providing network access services to clients;

    a second network node for providing information contents from network content providers, said second network node and said first network node obtaining BGP (Border Gateway Protocol) route data from each other via the communication network;

    a third network node setting a default route via said communication network, BGP route announcement and a VPN (Virtual Private Network) tunnel, and providing, at an access of the first network node, a cache server for storing information transmitted from the second network node, when a client of the first network node request a certain information content, the first network node searches the cache server, if the certain information content is found, the first network node provides said information content to the client, if the certain information is not found, the first network node sends a request for catching said information content to the second network node via the VPN tunnel, and the second network node transmits said information content to the first network node via the default route, so that the information content is provided to the client.

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