Method and apparatus for identifying devices on a network

• US 6,249,814 B1
• Filed: 09/22/1997
• Issued: 06/19/2001
• Est. Priority Date: 09/22/1997
• Status: Expired due to Term

• Current Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Original Assignee: Compaq Computer Corporation (HP Inc.)
• Inventors: Shaffer, David S., Justice, William D. Jr., Stupek, Richard A. Jr.
• Primary Examiner(s): Najjar, Saleh
• Application Number:
  US08/934,636
• Time in Patent Office: 1,366 Days
• Field of Search: 395/200.54, 395/200.68, 395/200.75, 709/224, 709/238, 709/245, 709/223
• US Class Current: 709/223
• CPC Class Codes: H04L 41/0213 Standardised network management protocols, e.g. simple network management protocol [SNMP]
• CPC Class Codes: H04L 41/12 Discovery or management of network topologies
• CPC Class Codes: H04L 61/00 Network arrangements, protocols or services for addressing or naming
• CPC Class Codes: H04L 61/50 Address allocation
• CPC Class Codes: H04L 67/51 Discovery or management thereof, e.g. service location protocol [SLP] or web services
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

A method and apparatus for identifying devices on a network. A management device is configured to multicast a query message to request identification of network devices. Each of the network devices is configured to respond to the management device multicast message by transmitting a reply message containing identification information of the responding device. The management device includes a directory containing the identification information of the network devices. The network protocol can include the TCP/IP protocol, and the packets have a format complying with a bootstrap protocol.

Claims

1. A network system, comprising:

network devices; and

a management device configured to transmit a message to request identification of network devices, the message including a primary/secondary flag;

wherein each of the network devices is configured to respond to the transmitted management device message by transmitting a reply message containing identification information of the responding network device.

2. The network system of claim 1, wherein the management device includes a directory containing the identification information of the network devices.

3. The network system of claim 1, wherein the identification information includes the network device'"'"'s network address.

4. The network system of claim 1, wherein the management device is further configured to issue an acknowledge message to a responding network device.

5. The network system of claim 4, wherein the management device is further configured to issue a secondary message to request identification of network devices from which the management device has not received a reply message.

6. The network system of claim 1, further comprising a network connecting the management device and the network devices, the network carrying packets that comply with the TCP/IP protocol.

7. The network system of claim 1, wherein a network device stores information about the management device, and wherein the network device is further configured to notify the management device of a problem in the network device using the management device information.

8. A computer system for use on a network having network devices, comprising:

a port coupled to the network; and

a processor coupled to the port and configured by a program to multicast a query message over the network, the query message including a primary indicator flag;

wherein network devices having a predetermined configuration respond to the query message by transmitting identification messages.

9. The computer system of claim 8, further comprising a memory, the processor further being configured by the program to store information in the identification messages into a directory located in the memory.

10. The computer system of claim 8, wherein the query message includes a bootstrap protocol packet.

11. The computer system of claim 10, wherein the query message includes a predefined magic cookie that is separate from the standard magic cookie of the bootstrap protocol.

12. The computer system of claim 11, wherein the predefined magic cookie includes a value 222.175.250.222.

13. Apparatus for identifying devices on a network, comprising:

a first application running on a first computer system having instructions to cause the first computer system to transmit a query message; and

second application running on a second computer system having instructions for causing the second computer system to respond to the query message by transmitting an identification message;

wherein the first application updates a directory of second computer systems based on the identification messages, and wherein the second application system updates a directory of first computer system responsive to the query message; and

wherein the query message includes a primary/secondary flag recognizable by the second application.

14. The apparatus of claim 13, wherein the query message complies with the bootstrap protocol.

15. The apparatus of claim 14, wherein the query message includes a special magic cookie separate from the standard magic cookie of the bootstrap protocol.

16. The apparatus of claim 13, wherein the directory of first computer systems stores identification information of the first computer system.

17. The apparatus of claim 16, wherein each of the second computer systems is configurable to:

read the identification information of the first computer system from the directory of first computer systems; and

notify the first computer system of a problem in the second computer system.

18. A computer system for use in a TCP/IP network having network devices, comprising:

a port coupled to the network;

a processor coupled to the port and configured to multicast a query message over the network, the query message including a primary/secondary flag,

wherein network devices responds to the query message by transmitting identification messages; and

a storage element storing a directory containing information from the identification messages.