Methods and apparatus for dynamic internet server selection

• US 6,119,162 A
• Filed: 09/25/1998
• Issued: 09/12/2000
• Est. Priority Date: 09/25/1998
• Status: Expired due to Term

• Current Assignee: Actiontec Electronics Incorporated
• Original Assignee: Actiontec Electronics Incorporated
• Inventors: Jeng, Alex Weihwang, Maravillas, Victor, Li, Chuang, Ho, Chee Hin
• Primary Examiner(s): Geckil, Mehmet B.
• Application Number:
  US09/161,609
• Time in Patent Office: 718 Days
• Field of Search: 709/220, 709/249, 709/250, 709/238, 709/227, 709/221, 709/228, 714/4
• US Class Current: 709/227
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 67/10015 Access to distributed or replicated servers, e.g. using brokers
• CPC Class Codes: H04L 67/1008 based on parameters of servers, e.g. available memory or workload monitoring of computer activity G06F11/30
• CPC Class Codes: H04L 67/1034 Reaction to server failures by a load balancer
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

Methods and apparatus for dynamically selecting a computer on a local area network to become a server providing shared access to a wide area network, such as the Internet, to all of the computers on the local area network is disclosed. A server may be selected from among any of the computers on the local area network that is currently available (i.e. powered on), and capable of establishing a connection to the wide area network. If the current server shuts down, a new server may be selected and started with only minimal impact on the other computers on the local area network, which are automatically reconfigured to use the new server to route network traffic to the wide area network.

Claims

1. A method of sharing a connection to the Internet among a plurality of computers connected to a local area network, the method comprising:

(a) determining that a subset of the plurality of computers are available for use as a server;

(b) automatically selecting one of the subset of the plurality of computers to become the server;

(c) repeating steps (a) and (b) when the server becomes unavailable;

(d) establishing a connection between the server and the Internet; and

(e) routing Internet traffic through the server to the Internet.

2. The method of claim 1, wherein routing Internet traffic through the server to the Internet comprises a step of running gateway software on the server.

3. The method of claim 2, wherein the gateway software comprises network address translation software.

4. The method of claim 2, wherein the gateway software comprises proxy server software.

5. The method of claim 1, wherein determining that a subset of the plurality of computers are available for use as a server further comprises gathering information on selected capabilities of active ones of the plurality of computers.

6. The method of claim 5, wherein automatically selecting one of the subset of the plurality of computers to become the server comprises evaluating a set of rules to determine which of the subset should become the server.

7. The method of claim 6, wherein evaluating the set of rules comprises evaluating the information on selected capabilities of active ones of the plurality of computers.

8. The method of claim 7, wherein the selected capabilities include a communication speed of each of the active ones of the plurality of computers, and evaluating the set of rules comprises evaluating the communication speed.

9. The method of claim 7, wherein the selected capabilities include a system speed of each of the active ones of the plurality of computers, and evaluating the set of rules comprises evaluating the system speed.

10. The method of claim 6, wherein the method further comprises reevaluating the set of rules when an additional computer becomes active.

11. The method of claim 1, wherein determining that a subset of the plurality of computers are available for use as a server further comprises determining which of the plurality of computers are powered on.

12. The method of claim 1, wherein determining that a subset of the plurality of computers are available for use as a server further comprises determining which of the plurality of computers has access to a communication device capable of establishing a connection to the Internet.

13. The method of claim 1, wherein the method further comprises permitting a user of one of the subset of the plurality of computers to override automatic selection of the server.

14. The method of claim 13, wherein permitting a user to override automatic selection of the server further comprises overriding automatic selection of the server only if the users of all of the subset of the plurality of computers consent.

15. Apparatus for selecting a computer on a local area network to become a server to permit sharing of an Internet connection among a plurality of computers connected to a local area network, the apparatus comprising a local computer connected to the local area network, the local computer programmed to:

(a) determine that a subset of the plurality of computers are available for use as a server;

(b) automatically select one of the subset of the plurality of computers to become the server;

(c) repeat steps (a) and (b) when the server becomes unavailable;

(d) establish a connection between the local computer and the Internet, and become the server, if the local computer was selected to become the server; and

(e) route Internet traffic through the server to the Internet.

16. The apparatus of claim 15, wherein the local computer is further programmed to inform other active ones of the plurality of computers that the server is unavailable if the local computer is the server, and the local computer is becoming unavailable.

17. The apparatus of claim 15, wherein the local computer is further programmed to execute gateway software to route Internet traffic to the Internet, if the local computer is the server.

18. The apparatus of claim 17, wherein the gateway software comprises network address translation software.

19. The apparatus of claim 17, wherein the gateway software comprises proxy server software.

20. The apparatus of claim 17, wherein the local computer is further programmed to gather information on selected capabilities of active ones of the plurality of computers.

21. The apparatus of claim 20, wherein the local computer is programmed to automatically select one of the subset of the plurality of computers to become the server by evaluating a set of rules to determine which of the subset should become the server.

22. The apparatus of claim 21, wherein evaluating the rules comprises evaluating the information on selected capabilities of the active ones of the plurality of computers.

23. The apparatus of claim 22, wherein the selected capabilities include a communication speed of each of the active ones of the plurality of computers, and the evaluating the set of rules comprises evaluating the communication speed.

24. The apparatus of claim 22, wherein the selected capabilities include a system speed of each of the active ones of the plurality of computers, and evaluating the set of rules comprises evaluating the system speed.

25. The apparatus of claim 21, wherein the local computer is further programmed to reevaluate the set of rules when an additional computer becomes active.

26. The apparatus of claim 15, wherein the local computer is programmed to determine that a subset of the plurality of computers are available for use as a server by determining which of the plurality of computers are powered on and have access to a communication device capable of establishing a connection to the Internet.

27. The apparatus of claim 21, wherein the local computer is further programmed to permit a user of one of the subset of the plurality of computers to override automatic selection of the server.

28. The apparatus of claim 27, wherein the local computer is programmed to permit a user to override automatic selection of the server only if the users of all of the subset of the plurality of computers consent.

38. The apparatus of claim 28, wherein the gateway software comprises proxy server software.

29. Apparatus for sharing an Internet connection among a plurality of computers, the apparatus comprising:

a local area network interconnecting the plurality of computers; and

a communication line permitting a connection between at least one of the plurality of computers and the Internet;

wherein each one of the plurality of computers comprises a processor programmed to;

(a) determine that a subset of the plurality of computers are available for use as a server;

(b) automatically select one of the subset of the plurality of computers to become the server;

(c) repeat steps (a) and (b) when the server becomes unavailable;

(d) establish a connection between the computer and the Internet, and become the server, if the computer was selected to become the server; and

(e) route network traffic through the server to the Internet.

30. The apparatus of claim 29, wherein the local area network comprises a network hub, and each of the plurality of computers is connected to the local area network through the network hub.

31. The apparatus of claim 29, wherein at least one of the plurality of computers comprises a communication device coupled to the communication line.

32. The apparatus of claim 31, wherein the communication device comprises a modem, and the communication line comprises a public telephone line.

33. The apparatus of claim 31, wherein the communication device comprises a cable modem, and the communication line comprises a cable line.

34. The apparatus of claim 31, wherein the communication device comprises a digital subscriber line modem, and the communication line comprises a digital subscriber line.

35. The apparatus of claim 31, wherein the communication device comprises an ISDN modem, and the communication line comprises an ISDN line.

36. The apparatus of claim 29, wherein the server executes gateway software to route network traffic to the Internet.

37. The apparatus of claim 36, wherein the gateway software comprises network address translation software.

39. The apparatus of claim 29, where the local area network comprises network connections chosen from a set consisting of 10Base-T, 100Base-T, telephone lines, power lines, wireless infrared communications, and wireless RF communications.