Patent ID: 6816890
Filing Date: 2004-11-09
Classification: H04L

Abstract:
A gateway apparatus connected to an access network accommodating at least one ISP (Internet Service Provider) network connected to the Internet, and having an LAC (L2TP Access Concentrator) function of transferring a PPP (Point to Point Protocol) frame received from a user terminal to said ISP network via an L2TP (Layer 2 Tunneling Protocol) connection established on said access network, comprising:a cache server interface for communicating a packet with a cache server for storing, as cache data, a part of contents data provided by a Web server connected to said Internet; and packet transfer controller for selecting a PPP frame in which a Web contents request message is included in a payload field from a stream of PPP frames received from a user terminal, transferring the request message indicated in the PPP frame to said cache server via said cache server interface, and transferring a response message in a PPP frame format, received from said cache server via said cache server interface to the user terminal requesting the Web contents.