Identification and selection of a desired server from a plurality of servers of varying protocols on the same network via a single boot ROM

• US 5,960,175 A
• Filed: 04/01/1996
• Issued: 09/28/1999
• Est. Priority Date: 04/01/1996
• Status: Expired due to Term

• Current Assignee: Advanced Micro Devices, Inc., Hughes Electronics Corporation (Rtx Corporation)
• Original Assignee: Advanced Micro Devices, Inc.
• Inventors: Lee, Sherman, Grossman, Leonid
• Primary Examiner(s): Asta, Frank J.
• Assistant Examiner(s): Patru, Daniel
• Application Number:
  US08/626,621
• Time in Patent Office: 1,275 Days
• Field of Search: 395/200.1, 395/652, 395/200.16, 395/700, 395/200.8, 395/200.52, 395/200.49, 370/463
• US Class Current: 709/222
• CPC Class Codes: G06F 9/4416 Network booting; Remote initial program loading [RIPL]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

A computer network includes a plurality of servers, each of the plurality of servers operating under one of a plurality of operating systems, and a client workstation including a single boot ROM containing instructions for identifying each of the plurality of servers by address and by type of operating system, and selecting one of the identified servers by address and type for booting on the network.

Claims

1. A computer network system comprising:

a plurality of servers, each of the plurality of servers operating under one of a plurality of operating systems; and

a client workstation coupled to the plurality of servers, the client workstation including a single boot ROM, the single boot ROM containing instructions for identifying each of the plurality of servers by address and by type of operating system; and

selecting one of the identified servers by address and type for booting on the network;

wherein the instruction step of identifying further comprises sending a FIND frame from the client to the network, receiving the FOUND frame from each of the plurality of servers, and determining a remote program load protocol followed by the server according to characteristics of the FOUND frame, including a frequency characteristic.

2. The network of claim 1 wherein the plurality of operating systems comprise IBM LAN Server 3.x operating system, IBM LAN Server 4.x operating system, Microsoft RPL Based Servers, and Novell Netware operating system.

3. A boot ROM for choosing a particular server on the network and performing a remote boot by a client, the network including a plurality of servers operating in accordance with a plurality of network operating systems, the boot ROM containing instructions for:

identifying each of the plurality of servers by address and by type of operating system; and

selecting one of the identified servers by address and type for booting on the network;

sending a FIND frame from the client to the network, and receiving a FOUND frame from each of the plurality of servers;

determining a remote program load protocol followed by the server according to the FOUND frame, including a frequency characteristic.

4. The boot ROM of claim 3 wherein the instruction step of determining further determines if an identifying signature mark is located at a particular offset in a data portion of the FOUND frame.

5. The boot ROM of claim 4 wherein when the identifying signature mark is located, the server is identified as a first server type.

6. The boot ROM of claim 5 wherein the first server type is a Novell server.

7. The boot ROM of claim 3 wherein the instruction step of determining further determines whether a destination address of the FOUND frame is repeated in reverse order in a data portion of the FOUND frame.

8. The boot ROM of claim 7 wherein when the destination address is repeated in reverse order in the data portion of the FOUND frame, the server is identified as a second server type.

9. The boot ROM of claim 8 wherein the second server type is an IBM server operating under IBM LAN Server 3.x operating software.

10. The boot ROM of claim 3 wherein the instruction step of determining further determines whether a destination address of the FOUND frame is repeated in a same order in a data portion of the FOUND frame.

11. The boot ROM of claim 10 wherein when the destination address is repeated in a same order, a frequency of the FOUND frame is determined.

12. The boot ROM of claim 11 wherein when the frequency matches a frequency associated with a first frequency, the server is identified as a third server type.

13. The boot ROM of claim 12 wherein the first frequency is an IBM frequency and the third server type is an IBM server operating under IBM LAN Server 4.x operating software.

14. The boot ROM of claim 12 wherein when the frequency does not match the frequency associated with the first frequency, the server is identified as a fourth server type.

15. The boot ROM of claim 14 wherein the fourth server type is a Microsoft RPL Based Server.

16. The boot ROM of claim 3 wherein the instruction step of identifying further comprises forming a database table to store the address and type of operating system of each server.

17. The boot ROM of claim 16 wherein the instruction step of selecting further comprises choosing a particular one of the servers according to the stored address and operating system in the database table.

18. A boot ROM for choosing a particular server on a network and performing a remote boot by a client, the network including a plurality of servers operating in accordance with a plurality of network operating systems, the boot ROM containing instructions for:

identifying each of a plurality of servers according to characteristics of a FOUND frame including a frequency characteristic;

selecting one of the identified servers; and

performing a remote program load by the boot ROM on the client through the selected one of the identified plurality of servers.

19. The boot ROM of claim 18 wherein the instruction step of identifying further comprises determining whether a destination address of the FOUND frame is repeated in a same order in a data portion of the FOUND frame, wherein when the destination address is repeated in a same order, the frequency characteristic of the FOUND frame is determined.

20. The boot ROM of claim 19 wherein when the frequency characteristic matches a frequency characteristic associated with an IBM frequency characteristic, the server is identified as an IBM server operating under IBM LAN Server 4.x operating software.

21. The boot ROM of claim 20 wherein when the frequency does not match the frequency characteristic associated with the IBM frequency characteristic, the server is identified as a Microsoft RPL Based Server.

22. The boot ROM of claim 18 wherein the instruction step of identifying further comprises determining if an identifying signature mark is located at a particular offset in a data portion of the FOUND frame, wherein when the identifying signature mark is located, the server is identified as a Novell server type.

23. The boot ROM of claim 18 wherein the instruction step of identifying further comprises determining whether a destination address of the FOUND frame is repeated in reverse order in a data portion of the FOUND frame, wherein when the destination address is repeated in reverse order in the data portion of the FOUND frame, the server is identified as an IBM server operating under IBM LAN Server 3.x operating software.