System with program for automating protocol assignments when newly connected to varing computer network configurations

• US 5,918,016 A
• Filed: 06/10/1997
• Issued: 06/29/1999
• Est. Priority Date: 06/10/1997
• Status: Expired due to Term

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Tonsing, Robert E., Perrin, Keith L., Linn, John C., Brewer, Jason M.
• Primary Examiner(s): Ramirez, Ellis B.
• Application Number:
  US08/872,466
• Time in Patent Office: 749 Days
• Field of Search: 395/200.5, 395/200.57, 395/200.59, 395/200.33, 395/200.68, 395/200.72, 395/200.52, 395/200.36, 455/31.2, 455/11.1, 370/312, 370/338, 370/401
• US Class Current: 709/220
• 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 61/5084 Providing for device mobility network addressing or numbering for mobility support in wireless networks H04W8/26; mobile IP H04W80/04
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

A method of configuring a mobile computer (H3) among different computer network configurations (N1, N2). In this method, the mobile computer is connected (18) to a first network medium in various steps. In one step, a network interface circuit (NIC) of the mobile computer is coupled to communicate with the first network medium. In another step, the mobile computer is configured to have an IP address allocated for the first network medium. Next, there is the step (20) of performing a program operation on the mobile computer to determine whether a dynamic configuration protocol is available on the first network medium. Another step performs a program operation to store an indicator in a storage resource of the mobile computer representing whether a dynamic configuration protocol is available on the first network medium. Next, the mobile computer is disconnected (22) from the first network medium, including uncoupling the network interface circuit of the mobile computer from communicating with the first network medium. Next, the mobile computer is connected (24) to a second network medium, including coupling the network interface circuit of the mobile computer to communicate with the second network medium, and performing a program operation on the mobile computer to request a user interface input. In response to the user interface input, the method performs a program operation to store (29) the IP address allocated for the first network medium in a persistent storage resource included within the mobile computer if the indicator indicates that a dynamic configuration protocol is not available on the first network medium. Also in response to the user interface input, the method performs a program operation on the mobile computer to configure (32) the mobile computer to have an IP address allocated for the second network medium by transmitting along the second network medium the IP address allocated for the second network medium from a server computer to the mobile computer.

Claims

1. A method of configuring a mobile computer among different computer network configurations, comprising:

connecting the mobile computer to a first network medium, comprising the steps of;

coupling a network interface circuit of the mobile computer to communicate with the first network medium; and

configuring the mobile computer to have an IP address allocated for the first network medium;

after the step of connecting, the steps of;

performing a program operation on the mobile computer to determine whether a dynamic configuration protocol is available on the first network medium; and

performing a program operation on the mobile computer to store an indicator in a storage resource of the mobile computer representing whether a dynamic configuration protocol is available on the first network medium;

after storing the indicator, disconnecting the mobile computer from the first network medium, wherein the disconnecting step comprises uncoupling the network interface circuit of the mobile computer from communicating with the first network medium;

after the disconnecting step, connecting the mobile computer to a second network medium, comprising the steps of;

coupling the network interface circuit of the mobile computer to communicate with the second network medium;

performing a program operation on the mobile computer to request a user interface input; and

responsive to the user interface input, the steps of;

performing a program operation on the mobile computer to store the IP address allocated for the first network medium in a persistent storage resource included within the mobile computer if the indicator indicates that a dynamic configuration protocol is not available on the first network medium; and

performing a program operation on the mobile computer to configure the mobile computer to have an IP address allocated for the second network medium by transmitting along the second network medium the IP address allocated for the second network medium from a server computer to the mobile computer.

2. The method of claim 1 and, after the step of coupling the network interface circuit of the mobile computer to the second network medium, further comprising the steps of:

first, disconnecting the mobile computer from the second network medium, wherein the first disconnecting step comprises uncoupling the network interface circuit of the mobile computer from communicating with the second network medium; and

second, connecting the mobile computer to the first network medium, wherein the second connecting step comprises;

coupling the network interface circuit of the mobile computer to communicate with the first network medium; and

performing a program operation on the mobile computer to configure the mobile computer to have the IP address allocated for the first network medium by copying the IP address stored in the persistent storage resource.

3. The method of claim 2 wherein the step of performing a program operation on the mobile computer to configure the mobile computer to have the IP address allocated for the first network medium by copying the IP address stored in the persistent storage resource comprises performing a program operation on the mobile computer to configure the mobile computer to have the IP address allocated for the first network medium by copying the IP address stored in the persistent storage resource if the indicator indicates that a dynamic configuration protocol is not available on the first network medium.

4. The method of claim 1 and, after the step of coupling the network interface circuit of the mobile computer to the second network medium, further comprising the steps of:

first, disconnecting the mobile computer from the second network medium, wherein the first disconnecting step comprises uncoupling the network interface circuit of the mobile computer from communicating with the second network medium; and

second, connecting the mobile computer to the first network medium, wherein the second connecting step comprises;

coupling the network interface circuit of the mobile computer to communicate with the first network medium; and

performing a program operation on the mobile computer to configure the mobile computer to have a new IP address allocated for the first network medium by transmitting along the first network medium the new IP address allocated for the first network medium from a server computer to the mobile computer.

5. The method of claim 4 wherein the mobile computer comprises a central processing unit, and wherein power to the central processing unit is not interrupted between the step of first disconnecting the mobile computer from the second network medium and the step of configuring the mobile computer to have the new IP address allocated for the first network medium.

6. The method of claim 4 wherein the step of performing a program operation on the mobile computer to configure the mobile computer to have a new IP address allocated for the first network medium by transmitting along the first network medium the new IP address allocated for the first network medium from a server computer to the mobile computer comprises performing a program operation on the mobile computer to configure the mobile computer to have a new IP address allocated for the first network medium by transmitting along the first network medium the new IP address allocated for the first network medium from a server computer to the mobile computer if the indicator indicates that a dynamic configuration protocol is available on the first network medium.

7. The method of claim 1:

wherein the step of connecting the mobile computer to a first network medium further comprises configuring the mobile computer to have a subnet mask corresponding to the first network medium;

wherein the step of connecting the mobile computer to a second network medium further comprises, after the step of coupling the network interface circuit of the mobile computer to communicate with the second network medium, and responsive to the user interface input, performing a program operation on the mobile computer to configure the mobile computer to have a subnet mask corresponding to the second network medium by transmitting the subnet mask corresponding to the second network medium from a server computer to the mobile computer;

and further comprising, prior to the step of performing a program operation on the mobile computer to configure the mobile computer to have a subnet mask corresponding to the second network medium and after the step of configuring the mobile computer to have a subnet mask corresponding to the first network medium, performing a program operation on the mobile computer to store the subnet mask corresponding to the first network medium in a persistent storage resource included within the mobile computer if the indicator indicates that a dynamic configuration protocol is not available on the first network medium.

8. The method of claim 7 and, after the step of coupling the network interface circuit of the mobile computer to the second network medium, further comprising the steps of:

first, disconnecting the mobile computer from the second network medium, wherein the first disconnecting step comprises uncoupling the network interface circuit of the mobile computer from communicating with the second network medium; and

second, connecting the mobile computer to the first network medium, wherein the second connecting step comprises;

coupling the network interface circuit of the mobile computer to communicate with the first network medium; and

performing a program operation on the mobile computer to configure the mobile computer to have the subnet mask corresponding to the first network medium by copying the subnet mask stored in the persistent storage resource.

9. The method of claim 8 wherein the step of performing a program operation on the mobile computer to configure the mobile computer to have the subnet mask corresponding to the first network medium by copying the subnet mask stored in the persistent storage resource comprises performing a program operation on the mobile computer to configure the mobile computer to have the subnet mask corresponding to the first network medium by copying the subnet mask stored in the persistent storage resource if the indicator indicates that a dynamic configuration protocol is not available on the first network medium.

10. The method of claim 1:

wherein the step of connecting the mobile computer to a first network medium further comprises configuring the mobile computer to have a default gateway corresponding to the first network medium;

wherein the step of connecting the mobile computer to a second network medium further comprises, after the step of coupling the network interface circuit of the mobile computer to communicate with the second network medium, and responsive to the user interface input, performing a program operation on the mobile computer to configure the mobile computer to have a default gateway corresponding to the second network medium by transmitting the default gateway corresponding to the second network medium from a server computer to the mobile computer;

and further comprising, prior to the step of performing a program operation on the mobile computer to configure the mobile computer to have a default gateway corresponding to the second network medium and after the step of configuring the mobile computer to have a default gateway corresponding to the first network medium, performing a program operation on the mobile computer to store the default gateway corresponding to the first network medium in a persistent storage resource included within the mobile computer if the indicator indicates that a dynamic configuration protocol is not available on the first network medium.

11. The method of claim 10 and, after the step of coupling the network interface circuit of the mobile computer to the second network medium, further comprising the steps of:

first, disconnecting the mobile computer from the second network medium, wherein the first disconnecting step comprises uncoupling the network interface circuit of the mobile computer from communicating with the second network medium; and

second, connecting the mobile computer to the first network medium, wherein the second connecting step comprises;

coupling the network interface circuit of the mobile computer to communicate with the first network medium; and

performing a program operation on the mobile computer to configure the mobile computer to have the default gateway corresponding to the first network medium by copying the default gateway stored in the persistent resource storage.

12. The method of claim 11 wherein the step of performing a program operation on the mobile computer to configure the mobile computer to have the default gateway corresponding to the first network medium by copying the default gateway stored in the persistent resource storage comprises performing a program operation on the mobile computer to configure the mobile computer to have the default gateway corresponding to the first network medium by copying the default gateway stored in the persistent resource storage if the indicator indicates that a dynamic configuration protocol is not available on the first network medium.

13. The method of claim 1:

wherein the step of connecting the mobile computer to a first network medium further comprises configuring the mobile computer to have a subnet mask and a default gateway corresponding to the first network medium;

wherein the step of connecting the mobile computer to a second network medium further comprises, after the step of coupling the network interface circuit of the mobile computer to communicate with the second network medium, and responsive to the user interface input, performing a program operation on the mobile computer to configure the mobile computer to have a subnet mask and a default gateway corresponding to the second network medium by transmitting the subnet mask and a default gateway corresponding to the second network medium from a server computer to the mobile computer;

and further comprising, prior to the step of performing a program operation on the mobile computer to configure the mobile computer to have a subnet mask and a default gateway corresponding to the second network medium and after the step of configuring the mobile computer to have a subnet mask and a default gateway corresponding to the first network medium, performing a program operation on the mobile computer to store the subnet mask and a default gateway corresponding to the first network medium in a persistent storage resource included within the mobile computer if the indicator indicates that a dynamic configuration protocol is not available on the first network medium.

14. The method of claim 13 and, after the step of coupling the network interface circuit of the mobile computer to the second network medium, further comprising the steps of:

first, disconnecting the mobile computer from the second network medium, wherein the first disconnecting step comprises uncoupling the network interface circuit of the mobile computer from communicating with the second network medium; and

second, connecting the mobile computer to the first network medium, wherein the second connecting step comprises;

coupling the network interface circuit of the mobile computer to communicate with the first network medium; and

performing a program operation on the mobile computer to configure the mobile computer to have the subnet mask and the default gateway corresponding to the first network medium by copying the subnet mask and the default gateway stored in the persistent storage resource.

15. The method of claim 14 wherein the step of performing a program operation on the mobile computer to configure the mobile computer to have the subnet mask and the default gateway corresponding to the first network medium by copying the subnet mask and the default gateway stored in the persistent storage resource comprises performing a program operation on the mobile computer to configure the mobile computer to have the subnet mask and the default gateway corresponding to the first network medium by copying the subnet mask and the default gateway stored in the persistent storage resource if the indicator indicates that a dynamic configuration protocol is not available on the first network medium.

16. The method of claim 1 wherein the user interface input comprises an input signal enabled in response to a pointing device.

17. The method of claim 1 wherein the user interface input comprises an input signal enabled in response to a keyboard.

18. The method of claim 1 wherein the step of coupling a network interface circuit of the mobile computer to communicate with the first network medium comprises physically connecting the network interface circuit to the first network medium.

19. The method of claim 1 wherein the step of coupling a network interface circuit of the mobile computer to communicate with the first network medium comprises activating a radio frequency transmitter/receiver to communicate with the first network medium.

20. The method of claim 1 and further comprising, prior to the step of performing a program operation on the mobile computer to configure the mobile computer to have an IP address allocated for the second network medium by transmitting along the second network medium the IP address allocated for the second network medium from a server computer to the mobile computer, the step of re-enumerating the network interface circuit of the mobile computer.

21. The method of claim 1 and, prior to the step of performing a program operation on the mobile computer to configure the mobile computer to have an IP address allocated for the second network medium by transmitting along the second network medium the IP address allocated for the second network medium from a server computer to the mobile computer, the step of releasing the IP address allocated for the first network medium if the indicator indicates that a dynamic configuration protocol is available on the first network medium.

22. The method of claim 1:

wherein the step of connecting the mobile computer to a first network medium further comprises configuring the mobile computer to have an IP address of a computer providing a name service and corresponding to the first network medium;

wherein the step of connecting the mobile computer to a second network medium further comprises, after the step of coupling the network interface circuit of the mobile computer to communicate with the second network medium, and responsive to the user interface input, performing a program operation on the mobile computer to configure the mobile computer to have an IP address of a computer providing a name service and corresponding to the second network medium by transmitting the IP address of the computer providing the name service to the second network medium from a server computer to the mobile computer;

and further comprising, prior to the step of performing a program operation on the mobile computer to configure the mobile computer to have an IP address of a computer providing a name service and corresponding to the second network medium and after the step of configuring the mobile computer to have an IP address of a computer providing a name service and corresponding to the first network medium, performing a program operation on the mobile computer to store the IP address of a computer providing a name service and corresponding to the first network medium in a persistent storage resource included within the mobile computer if the indicator indicates that a dynamic configuration protocol is not available on the first network medium.

23. A method of configuring a mobile computer among different computer network configurations, comprising:

connecting the mobile computer to a first network medium, comprising the steps of;

coupling a network interface circuit of the mobile computer to communicate with the first network medium; and

performing a program operation on the mobile computer to configure the mobile computer to have an IP address allocated for the first network medium by transmitting along the first network medium the IP address allocated for the first network medium from a server computer to the mobile computer;

after the step of connecting, the step of disconnecting the mobile computer from the first network medium, wherein the disconnecting step comprises uncoupling the network interface circuit of the mobile computer from communicating with the first network medium;

after the disconnecting step, connecting the mobile computer to a second network medium, comprising the steps of;

coupling the network interface circuit of the mobile computer to communicate with the second network medium;

performing a program operation on the mobile computer to request a user interface input, wherein the user interface input is provided by the user choosing a single interface button; and

responsive to the single button user interface input, the step of performing a program operation on the mobile computer to configure the mobile computer to have an IP address allocated for the second network medium by transmitting along the second network medium the IP address allocated for the second network medium from a server computer to the mobile computer; and

wherein power to the central processing unit of the mobile computer is not disturbed between the step of connecting the mobile computer to the first network medium and the step of performing a program operation on the mobile computer to configure the mobile computer to have an IP address allocated for the second network medium.