Method and system for time synchronization management

• US 6,094,672 A
• Filed: 05/19/1997
• Issued: 07/25/2000
• Est. Priority Date: 05/19/1997
• Status: Expired due to Term

• Current Assignee: Micro Focus Software, Inc. (Open Text Corporation)
• Original Assignee: Novell Incorporated (Open Text Corporation)
• Inventors: Cummings, Jay R., Wilkins, Kevin L., Willie, David J.
• Primary Examiner(s): DINH, DUNG C
• Application Number:
  US08/858,700
• Time in Patent Office: 1,163 Days
• Field of Search: 395/200.32, 395/200.33, 395/200.5, 395/200.51, 395/200.53, 395/200.54, 395/200.59
• US Class Current: 709/202
• CPC Class Codes: G06F 1/14 Time supervision arrangements, e.g. real time clock
• CPC Class Codes: H04L 41/0213 Standardised network management protocols, e.g. simple network management protocol [SNMP]
• CPC Class Codes: H04L 41/046 comprising network management agents or mobile agents therefor
• CPC Class Codes: H04L 41/22 comprising specially adapted graphical user interfaces [GUI]
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

A method and system for managing time synchronization services. The system uses standard management protocols to interface with a time synchronization management information base, which in turn interfaces with a time synchronization services module. A uniform and standard mechanism for managing time synchronization services is provided, which includes a user interface which eliminates the need to learn console commands and eases the administration of time synchronization services.

Claims

1. A method for managing time synchronization in a managed server, comprising:

defining in a MIB at least one client object being operative to maintain information about a client server;

defining in the MIB at least one source object being operative to maintain information about a source server;

implementing the MIB in an agent;

associating the agent with a server to be managed;

sending a time synchronization management signal to the agent; and

accessing one of the source object and the client object in response to the time synchronization management signal.

2. A method according to claim 1, further comprising interfacing the agent with a time synchronization module.

3. A method according to claim 1, wherein the at least one source object comprises a table object, and the table object includes a sequence containing a plurality of objects operative to maintain information about the source server.

4. A method according to claim 3, wherein the table object is operative to contain a sequence for each of a plurality of source servers.

5. A method according to claim 4, wherein the plurality of objects comprises a source identifier object being operative to identify a source server and a source discrepancy object being operative to indicate a time discrepancy between the managed server and the source server.

6. A method according to claim 4, wherein the accessing step comprises reading the values of the plurality of objects from a sequence associated with one of the plurality of source servers, and further comprising displaying the values of the plurality of objects on a display device.

7. A method according to claim 1, wherein the time synchronization management signal comprises a read request to obtain the value of the at least one source object.

8. A method according to claim 1, wherein the time synchronization management signal comprises a write request to set the value of the at least one source object.

9. A method according to claim 8, wherein the write request is an SNMP set request.

10. A method according to claim 1, wherein the at least one source object comprises a plurality of objects, including a source identifier object being operative to identify a source server and a source discrepancy object being operative to indicate a time discrepancy between the network server and the source server identified by the source identifier object, and the at least one client object comprises a plurality of client objects, including a client identifier object being operative to identify a client server, and a client status object being operative to maintain a status of the client server identified by the client identifier object.

11. A method according to claim 1, further comprising defining in the MIB at least one managed server object being operative to maintain a clock adjustment offset for synchronizing the managed server with the source server.

12. A method according to claim 1, wherein the information comprises a time type of the respective server.

13. A method according to claim 1, wherein the information comprises the most recent time that polling occurred with respect to the respective server.

16. A system according to claim 13, wherein the plurality of objects comprises a source identifier object being operative to identify a source server and a source discrepancy object being operative to indicate a time discrepancy between the network server and the source server identified by the source identifier object.

17. A system according to claim 16, wherein the user interface is operative to request from the agent the values of the objects in each sequence of the table object, and is operative to display at least some of the values from each sequence on an output device.

23. A method according to claim 1, wherein the at least one client object comprises a client table object, and the client table object includes a sequence containing a plurality of objects operative to maintain information about the client server.

24. A method according to claim 23, wherein the client table object is operative to contain a sequence for each of a plurality of client servers.

25. A method according to claim 24, wherein the plurality of objects contained in each client server sequence comprises a client identifier object being operative to identify the respective client server and a client status object being operative to maintain a status of the client server identified by the client identifier object.

14. A system for managing time synchronization in a server, comprising:

an agent associated with a network server to be managed, the agent being operative to respond to a synchronization management signal;

a MIB implemented by the agent, the MIB containing at least one client object being operative to maintain information about a client server, and at least one source object being operative to maintain information about a source server; and

a user interface including a process operative to send, upon request, a synchronization management signal to the agent.

15. A system according to claim 14, wherein the at least one source object comprises a table object, and the table object includes a sequence containing a plurality of objects operative to maintain information about the source server, and the table is operative to contain a sequence for each of a plurality of source servers.

18. A system according to claim 14, wherein the synchronization management signal is an add request to add a new source server from which the network server can synchronize, and in response to the add request, the agent is operative to add a new sequence regarding the new source server to the table object.

19. A method for managing time synchronization in a network server, comprising:

designating a client server;

designating a source server;

defining in a MIB a first client object being operative to identify the client server, and a second client object being operative to maintain a status of the client server identified by the first client object;

defining in the MIB a first source object being operative to identify a source server, and a second source object being operative to indicate a time discrepancy between the network server and the source server identified by the first source object;

defining in the MIB a first network object being operative to maintain a clock adjustment offset for synchronizing the network server with the source server, and a second network object being operative to maintain a time to provide to the client server;

implementing the MIB in an agent; and

associating the agent with the network server.

20. A method according to claim 19, further comprising designating a plurality of source servers, and wherein the first source object and the second source object are maintained in a sequence of a source table object, and the source table object is operative to maintain a sequence of the first source object and the second source object for each of the plurality of source servers.

21. A method according to claim 20, further comprising sending, from a user interface module, a write request to the agent to add a new first source object and a new second source object to the source table object, and adding a new sequence to the source table object in response to the write request.

22. A method according to claim 19, further comprising sending a request to the agent to return a value of the first source object, and displaying the returned value on a display device.