Zero-installation PPP-Bridge setup for lan-to-wan connectivity

• US 20030174714A1
• Filed: 03/03/2003
• Published: 09/18/2003
• Est. Priority Date: 03/01/2002
• Status: Abandoned Application

• Current Assignee: Conexant Incorporated (Synaptics Incorporated)
• Original Assignee: Globespan Virata, Inc.
• Inventors: Jain, Samir, Manik, Ravi, Sharma, Ajay
• Application Number:
  US10/377,514
• Publication Number:
  US 20030174714A1
• Time in Patent Office: Days
• US Class Current: 370/396
• CPC Class Codes: H04L 12/2856 Access arrangements, e.g. Internet access asynchronous transfer mode networks H04L12/5601; broadband local area networks H04L12/2801; optical access or distribution networks H04Q11/0067; access to open networks H04L12/5691; digital subscriber line end-user equipment and bit-level processing of data on a PSTN-based network H04M11/00; home network gateways H04L12/2834; wireless access networks H04W
• CPC Class Codes: H04L 12/2859 Point-to-point connection between the data network and the subscribers encapsulation H04L12/4633; virtual LANs H04L12/4641; routing of packets H04L45/00
• CPC Class Codes: H04L 12/2872 Termination of subscriber connections
• CPC Class Codes: H04L 12/2898 Subscriber equipments DSL modems H04M11/062; cable modems H04L12/2801
• CPC Class Codes: H04L 61/5007 Internet protocol [IP] addresses
• CPC Class Codes: H04L 61/5014 using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/168 specially adapted for link layer protocols, e.g. asynchronous transfer mode [ATM], synchronous optical network [SONET] or point-to-point protocol [PPP]
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers

Abstract

A customer premise equipment (CPE) device operating in a combined bridge/router mode is disclosed herein. The CPE device may implement a PPP-based bridge in conjunction with a wide area network (WAN) client (e.g., a PPPoE or PPPoA client) to configure and establish a PPP-based link between the CPE device and an access concentrator connected to a WAN, eliminating the need for a WAN client at an end user device on a local area network (LAN) connected to the CPE device. The CPE device further may be adapted to assign a global IP address (e.g., the global IP address assigned to the CPE device) to the end user device, thereby facilitating data communication between the end user device and the WAN without requiring the use of network address translation (NAT) or a similar process at the CPE device.

Claims

1. In a distributed network comprising a customer premise equipment (CPE) device connected to an end user device via a local area network (LAN) and an access concentrator via a wide area network (WAN), a method for providing data communications between the end user device and the access concentrator comprising the steps of:

establishing a Point-to-Point Protocol (PPP)-based connection between the CPE device and the access concentrator, wherein the CPE device is assigned a global Internet Protocol (IP) address as a result of the PPP-based connection;

assigning the global IP address to the end user device;

bridging at least one data packet received at the CPE from the end user device to the access concentrator, wherein a source IP address of the at least one data packet is the global IP address; and

bridging at least one data packet received at the CPE from the access concentrator to the end user device, wherein a destination IP address of the at least one data packet is the global IP address.

2. The method as in claim 1, wherein the step of assigning the global IP address includes assigning the global IP address using a dynamic host control protocol (DHCP) server at the CPE device.

3. The method as in claim 1, wherein the step of bridging the at least one data packet from the end user device to the access concentrator includes removing an original header and adding a new header based at least in part on the WAN adaptor.

4. The method as in claim 1, wherein the step of bridging the at least one data packet from the access concentrator to the end user device includes removing an original header and adding a new header based at least in part on the LAN adaptor.

5. The method as in claim 1, wherein the PPP-based connection includes one of a group consisting of:

a Point-to-Point over Ethernet (PPPoE) connection and a Point-to-Point over Asynchronous Transfer Mode (PPPoA) connection.

6. The method as in claim 1, wherein the CPE device includes one of a group consisting of:

a dial-up modem, an digital subscriber line (xDSL) modem, a cable modem, and a router.

7. A customer premise equipment (CPE) device connected to an end user device via a local area network (LAN) and an access concentrator via a wide area network (WAN), the CPE device comprising:

a WAN interface operably connected to the access concentrator and having a global Internet Protocol (IP) address;

a LAN interface operably connected to the end user device and having a local IP address;

a WAN client operably connected to the WAN interface and being adapted to establish a Point-to-Point Protocol (PPP)-based connection with the access concentrator; and

a PPP bridge operably connected to the LAN interface, the WAN client and the WAN interface and being adapted to;

bridge data packets received at the WAN interface from the access concentrator to the LAN interface for transmission to the end user device; and

bridge data packet received at the LAN interface from the end user device to the WAN interface for transmission to the access concentrator;

wherein the end user device has a same global IP address as the global IP address of the WAN interface.

8. The CPE device as in claim 7, wherein the global IP address is assigned by the access concentrator as a result of the PPP-based connection established by the WAN client.

9. The CPE device as in claim 8, wherein the CPE device further includes a dynamic host configuration protocol (DHCP) server operably connected to the LAN interface and being adapted to configure the end user device to use the global IP address of the WAN interface.

10. The CPE device as in claim 7, wherein the PPP-based connection includes one of a group consisting of:

a Point-to-Point over Ethernet (PPPoE) connection and a Point-to-Point over Asynchronous Transfer Mode (PPPoA) connection.

11. The CPE device as in claim 10, wherein the WAN client includes one of a group consisting of:

a Point-to-Point over Ethernet (PPPoE) client and a Point-to-Point over Asynchronous Transfer Mode (PPPoA) client.

12. The CPE device as in claim 7, wherein a gateway address for the end user device includes the global IP address.

13. The CPE device as in claim 7, wherein the PPP bridge is implemented as at least part of a network protocol stack.

14. The CPE device as in claim 7, wherein the CPE device includes one of a group consisting of:

a dial-up modem, an digital subscriber line (xDSL) modem, a cable modem, and a router.

15. In a distributed network comprising a customer premise equipment (CPE) device connected to an end user device via a local area network (LAN) and an access concentrator via a wide area network (WAN), a computer readable medium, the computer readable medium including a set of executable instructions adapted to manipulate a processor to:

establish a Point-to-Point Protocol (PPP)-based connection between the CPE device and the access concentrator, wherein the CPE device is assigned a global Internet Protocol (IP) address as a result of the PPP-based connection;

assign the global IP address to the end user device;

bridge at least one data packet received at the CPE from the end user device to the access concentrator, wherein a source IP address of the at least one data packet is the global IP address; and

bridge at least one data packet received at the CPE from the access concentrator to the end user device, wherein a destination IP address of the at least one data packet is the global IP address.

16. The computer readable medium as in claim 15, wherein the set of executable instructions adapted to manipulate the processor to bridge the at least one data packet from the end user device to the access concentrator includes executable instructions adapted to manipulate the processor to add a header to the at least one data packet, the header having the CPE device as a source address and the access concentrator as a destination address.

17. The computer readable medium as in claim 15, wherein the set of executable instructions adapted to manipulate the processor to bridge the at least one data packet from the end user device to the access concentrator includes executable instructions adapted to manipulate the processor to add a header a header to the at least one data packet, the header having the CPE device as a source address and the end user device as a destination address.

18. The computer readable medium as in claim 15, wherein the PPP-based connection includes one of a group consisting of:

a Point-to-Point over Ethernet (PPPoE) connection and a Point-to-Point over Asynchronous Transfer Mode (PPPoA) connection.

19. The computer readable medium as in claim 15, wherein the CPE device includes one of a group consisting of:

a dial-up modem, an digital subscriber line (xDSL) modem, a cable modem and a router.