Centralized management in a computer network

• US 4,995,035 A
• Filed: 10/31/1988
• Issued: 02/19/1991
• Est. Priority Date: 10/31/1988
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Cole, Leo J., Lee, Jeannette, Plank, Larry K., Frantz, Curtis J., Ordanic, Zvonimir
• Primary Examiner(s): Olms, Douglas W.
• Assistant Examiner(s): Hsu, Alpus H.
• Application Number:
  US07/265,104
• Time in Patent Office: 841 Days
• Field of Search: 340/825.08, 340/825.5, 340/825.51, 370/85.7, 370/85.8, 370/95.1, 370/95.2, 370/94.1
• US Class Current: 370/254
• CPC Class Codes: H04L 41/042 comprising distributed management centres cooperatively managing the network

Abstract

An improved method for dynamically and centrally managing a network which is being partitioned into Focal Point (FP) nodes and non-FP (NFP) or serviced nodes. Each FP node provides management services to an assigned group of non-FP nodes. The names of the non-FP nodes are maintained in a table called a "sphere of control" (SOC) table at the FP node that services those NFP nodes. As NFP nodes in the SOC table become active, the FP establishes a session with the NFP node and sends it a "Request to be Your FP" message. If the NFP node supports the keys (bit pattern identifying a particular category of management services data) for which authorization is being requested, the NFP node replies positively acknowledging the requestor as its focal point for the specified key. Thereafter, problem messages which are related to the particular type of management services are forwarded to the FP node.

Claims

1. An improved method for managing a computer network including a plurality of nodes interconnected by a communications network, said method comprising the steps of:

(a) partitioning the network into at least one Focal Point (FP) node and a plurality of Non-Focal Point (NFP) nodes;

(b) at the Focal Point node, maintaining a sphere of control (SOC) table than includes a listing of names of the Non-Focal Point nodes;

(c) at each Non-Focal Point node, maintaining a Focal Point authorization table with said table at least containing indicia which indentifies the Focal Point node;

(d) generating and sending from the Focal Point node to active Non-Focal Point nodes a "Request to be Your Focal Point" message;

(e) for each Non-Focal Point node receiving the message of step (d), responding with an "Accept Request" message only if a None-Focal Point node ascertains that the Focal Point node is its primary Focal Point node; and

(f) thereafter, said each Non-Focal Point node generating and forwarding information messages to the Focal Point node.

2. The improved method of claim 1 wherein the information message includes error reports.

3. The improved method of claim 2 further including the step of displaying the error reports at the Focal Point node.

4. In a computer network having a plurality of nodes interconnected by a plurality of communications links an improved method for managing said network comprising the steps of:

(a) partitioning the network into a plurality of Focal Point and a plurality of Non-Focal Point nodes, with each Focal Point node assigned to provide management services to a selected group of Non-Focal Point nodes;

(b) at each Focal Point node, maintaining a sphere of control (SOC) table that includes the names of the Non-Focal Point nodes which are being serviced by that Focal Point node;

(c) at each Non-Focal Point node, maintaining a Focal Point authorization table that includes indicia that identifies Focal Point nodes and the type of management services that the nodes provide;

(d) generating and sending a Focal Point node to active Non-Focal Point nodes a "Request to be Your Focal Point" message;

(e) for selected ones of Non-Focal Point node receiving the message of step (d), responding with an "Accept Request" message only if a Non-Focal Point node determines that the Focal Point node is its servicing node; and

(f) thereafter, said selected ones of Non-Focal Point node generating and sending to the Focal Point node information messages.

5. The improved method of claim 4 wherein the "Request to be Your Focal Point" message includes an identification code, and a type of service code which identifies the service the Focal Point node provides.

6. The improved method of claim 4 wherein the Focal Point authorization table includes Focal Point name field containing names of Focal Point nodes and type of service field with indicia indicating the type of service which a named Focal Point node provides to the node.

7. The improved method of claim 6 wherein a responding Non-Focal Point node in step (e) determines that the requesting Focal Point node is the primary servicing node if a type of service code indicia in the "Request to be Your Focal Point" message indicates that the Focal Point is primary.

8. The improved method of claim 6 wherein responding Non-Focal Point nodes of step (e) determine that the requesting Focal Point node is a servicing node if selected indicia in said "Request to be Your Focal Point" message matches selected indicia in said Focal Point authorization table.

9. In a communications network having a plurality of network nodes interconnected by a plurality of communications links an improved method for exchanging selected information between network nodes comprising the steps of:

(a) selecting at least one network node as a control node;

(b) maintaining in said one control node a list of network nodes which are being controlled by said control node;

(c) maintaining in said one control node a topology data base which indicates changes in said network;

(d) monitoring in said one control node the list of network nodes and the topology data base; and

(e) as a network node becomes active node, issuing a "Request to be Your Focal Point" message to said active node.

10. The method set forth in claim 9 further including the steps of:

(f) receiving the message at the active node;

(g) examining the message at the active node to determine if the control node is providing primary or secondary management service functions; and

(h) generating and transmitting a reply message at the active node accepting or denying the request from said control node.

11. An improved method for managing a computer network including a plurality of nodes interconnected by a communications network, said method comprising the steps of:

(a) partitioning the network into at least one Focal Point (FP) node and a plurality of Non-Focal Point (NFP) nodes;

(b) at the Focal Point node, maintaining a sphere of control (SOC) table that includes a listing of names of the Non-Focal Point nodes and a set of Management Service (MS) keys identifying services provided by the Focal Point node;

(c) at each Non-Focal Point node, maintaining a Focal Point authorization table with said Focal Point authorization table at least containing indicia which identifies the Focal Point node and Management Service keys;

(d) generating and sending from the Focal Point node to active Non-Focal Point nodes a "Request to be Your Focal Point" message;

(e) for selected ones of Non-Focal Point nodes receiving the message of step (d) responding with an "Accept Request" message only if a Non-Focal Point node ascertains that the Focal Point node is its primary focal point node or if the node lacks a focal point for specified Management Service keys; and

thereafter said selected ones of Non-Focal Point nodes, generating and forwarding informational messages with the specified Management Service keys to the Focal Point node.

12. The improved method set forth in claim 11 wherein the network of step (a) is being partitioned into at least two Focal Point nodes.

13. The improved method set forth in claim 12 further including the steps of designating one of the two Focal Point nodes as a Backup Focal Point node;

and

establishing communications between the Backup Focal Point node, another Focal Point node and the Non-Focal Point nodes so that the Backup Focal Point node assumes responsibility for servicing the Non-Focal Point nodes if said another Focal Point node is disabled.

14. In a computer network having a plurality of computer nodes interconnected by communications links an improved apparatus for managing said network comprising:

at least one of the computer nodes providing management services to selected ones of said computer nodes;

said at least one of the computer nodes including a storage means with a topology data base (TDB) table containing information about structures or activities of said computer nodes or a Focal Point management services table listing the selected ones of said computer nodes or codes representative of management services provided by said one computer node; and

a control means located in said one computer node for monitoring said topology data base table or the Focal Point management services table and as the selected ones of said nodes become active, generate and transmit a "Request to be Your Focal Point" message to said nodes.

15. The improved apparatus of claim 14 wherein the "Request to be Your Focal Point" message includes a data field with coded signals identifying the management services which said at least one of the computer nodes provides.

16. The improved apparatus of claim 14 further including:

means located at the selected ones of said computer nodes for receiving the "Request to be Your Focal Point" message;

means provided in said selected ones of said computer nodes for correlating information contained in the "Request to be Your Focal Point" message with information contained in Focal Point authorization table and for generating and transmitting to said at least one of the computer nodes an "Accept Request" message only if the selected ones of said computer nodes determine that said at least one of the computer nodes is its servicing node.