Network server and method of discovery of a network node

• US 8,260,916 B2
• Filed: 10/31/2003
• Issued: 09/04/2012
• Est. Priority Date: 08/15/2003
• Status: Active Grant

• Current Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Frietsch, Thomas, Holzer, Michael
• Primary Examiner(s): DAILEY, THOMAS J
• Application Number:
  US10/698,016
• Publication Number:
  US 20050038889A1
• Time in Patent Office: 3,231 Days
• Field of Search: 709/222, 709/225
• US Class Current: 709/225
• CPC Class Codes: H04L 12/56 Packet switching systems

Abstract

A network node in a computer network is discovered in response to a network node being reconnected to the network. The discovery procedure is initiated by an access request of the network node, such as a log on request or an IP address request.

Claims

1. A method of discovering that a particular network node has been connected to a computer network, wherein the network includes (a) plural nodes, one of which is the particular node, and (b) a server arrangement including a network portion and a discovery portion, the method comprising:

responding to an establishment of a connection of the particular network node to the network, the network portion of the server arrangement receiving an access request from the particular network node, wherein the particular network node has an assigned address assigned by a device in the network;

in response to receiving the access request, the network portion authenticating the particular network node;

the network portion sending a discovery request and the assigned address of the particular network node to the discovery portion of the server arrangement after the network portion has successfully authenticated the particular network node;

the discovery portion storing the assigned address of the particular network node and initiating a discovery program that performs a discovery procedure for that particular network node;

the discovery procedure for the particular network node, initiated by the discovery request from the network portion, including polling other nodes in the network to determine a network topology, the polled network topology including at least some of the other nodes to which the particular network node is connected, and to determine the configuration of the particular network node.

2. The method of claim 1 wherein the discovery portion receives a sequence of discovery requests including assigned addresses of various nodes of the network which have requested access to the network, the discovery portion storing the assigned addresses of the received requests from the various nodes.

3. The method of claim 2 wherein the discovery portion stores the assigned addresses as a stack that the discovery portion processes in a first-in-first-out order.

15. The method of claim 1, wherein the particular network node includes a portable computer and a docking station, the docking station responding to the portable computer being initially connected to the docking station by booting the portable computer and performing a logon dialog between the network portion of the server arrangement and the portable computer;

the logon dialog being the access request;

the network portion of the server arrangement responding to the logon dialog from the portable computer by authenticating the portable computer; and

the server arrangement, when connected to the authenticated portable computer, functioning as a domain controller for the portable computer.

4. A non-transitory storage medium storing machine-readable instructions to discover that a particular network node has been connected to a computer network, wherein the network includes (a) plural nodes, one of which is the particular node, and (b) a server arrangement including a network portion and a discovery portion, wherein the machine-readable instructions when executed by a processor cause the processor:

to respond to an establishment of a connection of the particular network node to the network, the network portion of the server arrangement receiving an access request from the particular network node, wherein the particular network node has an assigned address assigned by a device in the network;

in response to receiving the access request, the network portion to authenticate the particular network node;

the network portion to send a discovery request and the assigned address of the particular network node to the discovery portion of the server arrangement after the network portion has successfully authenticated the particular network node;

the discovery portion to store the assigned address of the particular network node and initiating a discovery program that performs a discovery procedure for the particular network node;

the discovery procedure for the particular network node, initiated by the discovery request from the network portion, including polling other nodes in the network to determine a network topology, the polled network topology including at least some of the other nodes to which the particular network node is connected, and to determine the configuration of the particular network node.

5. The non-transitory storage medium of claim 4 wherein the discovery portion receives a sequence of discovery requests including assigned addresses of various nodes of the network which have requested access to the network, the discovery portion storing the assigned addresses of the received requests from the various nodes.

6. The non-transitory storage medium of claim 5 wherein the discovery portion stores the assigned addresses as a stack that the discovery portion processes in a first-in-first-out order.

16. The non-transitory storage medium of claim 4, wherein the particular network node includes a portable computer and a docking station, the docking station responding to the portable computer being initially connected to the docking station by booting the portable computer and performing a logon dialog between the network portion of the server arrangement and the portable computer;

the logon dialog being the access request;

the network portion of the server arrangement responding to the logon dialog from the portable computer by authenticating the portable computer; and

the server arrangement, when connected to the authenticated portable computer, functioning as a domain controller for the portable computer.

7. A server arrangement including machine-readable information executed by a processor, the server arrangement for discovering that a particular network node has been connected to a computer network, wherein the particular network node has an assigned address assigned by a device in the network, the server arrangement including:

a network portion and a discovery portion;

the network portion being arranged to, responding to an establishment of a connection of the particular network node to the network, receive an access request from the particular network node;

the network portion being arranged to authenticate the particular network node in response to receiving the access request;

the network portion being arranged to send a discovery request and the assigned address of the particular network node to the discovery portion after the network portion has successfully authenticated the particular network node;

the discovery portion being arranged to store the assigned address of the particular network node and initiating a discovery program that performs a discovery procedure for the particular network node; and

the discovery procedure for the particular network node, initiated by the discovery request from the network portion, including polling other nodes in the network to determine a network topology, the polled network topology including at least some of the other nodes to which the particular network node is connected, and to determine the configuration of the particular network node.

8. The server arrangement of claim 7 wherein the discovery portion is arranged to receive a sequence of discovery requests including assigned addresses of various nodes of the network which have requested access to the network and includes a storage for storing the assigned addresses on the received requests from the various nodes.

9. The server arrangement of claim 8 wherein the storage is arranged to store the assigned addresses as a stack, the discovery portion being arranged to process the stack in a first-in-first-out order.

17. The server arrangement of claim 7, wherein the particular network node includes a portable computer and a docking station, the docking station responding to the portable computer being initially connected to the docking station by booting the portable computer and performing a logon dialog between the network portion of the server arrangement and the portable computer;

the logon dialog being the access request;

the network portion of the server arrangement responding to the logon dialog from the portable computer by authenticating the portable computer; and

the server arrangement, when connected to the authenticated portable computer, functioning as a domain controller for the portable computer.

10. A server arrangement including machine-readable information executed by a processor, the server arrangement for discovering that a particular network node has been connected to a computer network, wherein the particular network node has an address assigned by a device in the network, the server arrangement including:

a network portion and a discovery portion;

the network portion being arranged to, responding to an establishment of a connection of the particular network node to the network, receive an access request from the particular network node;

the network portion being arranged to authenticate the particular network node in response to receiving the access request;

the network portion being arranged to send a discovery request and the assigned address of the particular network node to the discovery portion after the network portion has successfully authenticated the particular network node;

the discovery portion being arranged to store the assigned address of the particular network node and initiating a discovery program that performs a discovery procedure for the particular network node;

the discovery procedure for the particular network node, initiated by the discovery request from the network portion, including polling other nodes in the network to determine a network topology, the polled network topology including at least some of the other nodes to which the particular network node is connected, and to determine the configuration of the particular network node.

11. The server arrangement of claim 10 wherein the discovery portion is arranged to receive a sequence of discovery requests including assigned addresses of various nodes of the network which have requested access to the network and includes a storage for storing the assigned addresses on the received requests from the various nodes.

12. The server arrangement of claim 11 wherein the storage is arranged to store the assigned addresses as a stack, the discovery portion being arranged to process the stack in a first-in-first-out order.

18. The server arrangement of claim 10 wherein the particular network node includes a portable computer and a docking station, the docking station responding to the portable computer being initially connected to the docking station by booting the portable computer and performing a logon dialog between the network portion of the server arrangement and the portable computer;

the logon dialog being the access request;

the network portion of the server arrangement responding to the logon dialog from the portable computer by authenticating the portable computer; and

the server arrangement, when connected to the authenticated portable computer, functioning as a domain controller for the portable computer.

13. A computer network for discovering that a particular network node has been connected to the computer network, the network comprising:

a server arrangement including machine-readable information executed by a processor; and

plural nodes, one of which is the particular network node, wherein the particular network node is assigned an addressed by the network;

the server arrangement including;

a network portion and a discovery portion, the network portion being arranged to, responding to an establishment of a connection of the particular network node to the network, receive an access request from the particular network node,

the network portion being arranged to authenticate the particular network node in response to receiving the access request,

the network portion being arranged to send a discovery request and the assigned address of the particular network node to the discovery portion after the network portion has successfully authenticated the particular network node,

the discovery portion being arranged to store the assigned address of the particular network node and initiating a discovery program that performs a discovery procedure for the particular network node, and

the discovery procedure for the particular network node, initiated by the discovery request from the network portion, including polling other nodes in the network to determine a network topology, the polled network topology including at least some of the other nodes to which the particular network node is connected, and to determine the configuration of the particular network node.

14. The computer network of claim 13 wherein the discovery portion is arranged to receive a sequence of discovery requests including assigned addresses of various nodes of the network which have requested access to the network and includes a storage for storing the assigned addresses on the received requests from the various nodes.

19. The computer network of claim 13, wherein the particular network node includes a portable computer and a docking station, the docking station responding to the portable computer being initially connected to the docking station by booting the portable computer and performing a logon dialog between the network portion of the server arrangement and the portable computer;

the logon dialog being the access request;

the network portion of the server arrangement responding to the logon dialog from the portable computer by authenticating the portable computer; and

the server arrangement, when connected to the authenticated portable computer, functioning as a domain controller for the portable computer.