Gateway apparatus with LAC function
First Claim
1. 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.
1 Assignment
0 Petitions
Accused Products
Abstract
A gateway apparatus 104 connected to an access network 105 accommodating a plurality of ISP networks 108, and having an LAC function of transferring a PPP frame received from a user terminal to any one of the ISP networks via an L2TP connection set on the access network, includes: a cache server interface 112 for connection to a cache server; and a packet transfer controller (81A to 81C and 87) 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, and transferring the request message indicated in the PPP frame to the cache server via the cache server interface.
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Citations
17 Claims
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1. 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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A gateway apparatus connected via an access network to a plurality of LNSs (L2TP Network Servers) each accommodating an 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 via an access line to any one of said LNSs via an L2TP (Layer 2 Tunneling Protocol) connection established on said access network, comprising:
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a cache server interface for communicating data with a cache server for storing, as cache data, a part of contents data provided by a Web server connected to said Internet;
an access line interface for performing communication with a user terminal via said access line;
an access network interface for performing communication with said LNS via said access network; and
a packet transfer controller for performing a predetermined protocol process on a packet received from any one of said interfaces and selectively transferring the resultant to another interface, wherein said packet transfer controller selects a PPP frame in which a Web contents request message is included in a payload field from a stream of PPP frames received by said access line interface, and transfers the Web contents request message extracted from the PPP frame to said cache server via said cache server interface. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A gateway apparatus connected to an access network accommodating a plurality of ISP (Internet Service Provider) networks 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 any one of said ISP networks corresponding to an ISP subscribed by the user of said user terminal via an L2TP (Layer 2 Tunneling Protocol) connection established on said access network, comprising:
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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 plurality of PPP frames received from a plurality of user terminals subscribing different ISPs, transferring the request message indicated in the PPP frame to said cache server via said cache server interface, and transferring an IP packet in a PPP frame format, including a response message received from said cache server via said cache server interface to the user terminal requesting the Web contents.
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Specification