Method and system for dynamic loading of management information bases on network devices

• US 8,635,315 B2
• Filed: 08/09/2006
• Issued: 01/21/2014
• Est. Priority Date: 08/09/2006
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Mendiratta, Rohit, Hosdurg, Narayana Pai, Karmakar, Anirban
• Primary Examiner(s): Backer, Firmin
• Assistant Examiner(s): BELCHER, HERMAN A
• Application Number:
  US11/501,628
• Publication Number:
  US 20080040467A1
• Time in Patent Office: 2,722 Days
• Field of Search: 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 41/0226 Mapping or translating multiple network management protocols
• CPC Class Codes: H04L 41/0893 Assignment of logical groups to network elements
• CPC Class Codes: H04L 41/0894 Policy-based network configuration management

Abstract

In one embodiment, a Management Information Base (MIB) is dynamically loaded on a managed network device that is managed by a managing network device using a management application. Initially, one or more network management objects are identified. The identified one or more network management objects are then included in the MIB. Thereafter, a policy file to be associated with the MIB is defined. Consequently, the MIB is loaded on the managed network device along with the associated policy file.

Claims

1. A method comprising:

identifying network management objects associated with a managed network device that are available in a first management application in the managed network device, the network management objects not included in an existing management information base (MIB) associated with the managed network device, the first management application configured for handling network management objects that are not included in the existing MIB;

including the identified network management objects in a new MIB;

generating a first policy file for association with the new MIB based on the identified network management objects, wherein the first policy file is generated outside the existing MIB and includes policies used for obtaining values of the identified network management objects from the first management application;

loading the new MIB on the managed network device, including loading the first policy file on the managed network device;

receiving, at the managed network device, a query from a managing network device for a value of a network management object included in the new MIB; and

responsive to receiving the query;

extracting, using the first policy file, the queried value from the first management application;

converting, using the first policy file, the extracted value to a syntax that is compatible with a second management application associated with the managing network device; and

populating, using the first policy file, the new MIB with the converted value during runtime of the managed network device.

2. The method of claim 1, wherein an infrastructure implemented on the managed network device loads the new MIB and the first policy file on the managed network device.

3. The method of claim 2, wherein the infrastructure associates the new MIB with the first policy file on the managed network device.

4. The method of claim 1 further comprising selecting the network management objects included in the new MIB as part of a process for loading the new MIB.

5. The method of claim 1 further comprising:

converting an existing syntax of the extracted value to a syntax of formal specifications that is compatible with the second management application; and

using the populated new MIB to service the query from the managing network device.

6. The method of claim 5, wherein the queried value in the converted syntax is obtained by the second management application directly from the new MIB.

7. The method of claim 5, wherein the queried value in the converted syntax is populated in an output table present in the new MIB by the first policy file.

8. The method of claim 1 further comprising:

loading the new MIB on a second managed network device that is different from the managed network device on which the new MIB is previously loaded; and

loading a second policy file on the second managed network device.

9. The method of claim 8 further comprising:

receiving, at the second managed network device, a query from the managing network device for a value of a network management object included in the new MIB loaded on the second managed network device; and

responsive to receiving the query;

extracting, using the second policy file, the queried value from a third management application on the second managed network device, the third management application on the second managed network device configured for handling network management objects that are not included in pre-existing MIBs associated with the second managed network device;

converting, using the second policy file, an existing syntax of the extracted value to a syntax of formal specifications compatible with the second management application;

populating, using the second policy file, the new MIB on the second managed network device with the converted value during runtime; and

using the populated new MIB to service the query from the managing network device.

10. The method of claim 9, wherein the second policy file is different from the first policy file loaded on the managed network device, the first policy file and the second policy file configured for obtaining values of the network management objects included in the new MIB.

21. The method of claim 1, wherein the first management application is selected from the group consisting of a Command Line Interface (CLI), Simple Network Management Protocol (SNMP), eXtensible Markup Language (XML) and Hyper Text Transfer Protocol (HTTP).

22. The method of claim 1, wherein the second management application is selected from the group consisting of Simple Network Management Protocol (SNMP), Common Management Information Protocol (CMIP), Common Management information protocol Over Transmission control protocol (CMOT), and Simple Object Access Protocol (SOAP).

11. A system comprising:

one or more processors; and

a non-transitory machine-readable medium including instructions executable by the one or more processors and configured to cause the one or more processors to perform operations comprising;

identifying network management objects associated with a managed network device that are available in a first management application in the managed network device, the network management objects not included in an existing management information base (MIB) associated with the managed network device, the first management application configured for handling network management objects that are not included in the existing MIB;

including the identified network management objects in a new MIB;

generating a first policy file for association with the new MIB based on the identified network management objects, wherein the first policy file is generated outside the existing MIB and includes policies used for obtaining values of the identified network management objects from the first management application;

loading the new MIB on the managed network device, including loading the first policy file on the managed network device;

receiving, at the managed network device, a query from a managing network device for a value of a network management object included in the new MIB; and

responsive to receiving the query;

extracting, using the first policy file, the queried value from the first management application;

converting, using the first policy file, the extracted value to a syntax that is compatible with a second management application associated with the managing network device; and

populating, using the first policy file, the new MIB with the converted value during runtime of the managed network device.

18. The system of claim 11, wherein the first management application is selected from the group consisting of a Command Line Interface (CLI), Simple Network Management Protocol (SNMP), eXtensible Markup Language (XML) and Hyper Text Transfer Protocol (HTTP).

23. The system of claim 11, wherein the second management application is selected from the group consisting of Simple Network Management Protocol (SNMP), Common Management Information Protocol (CMIP), Common Management information protocol Over Transmission control protocol (CMOT), and Simple Object Access Protocol (SOAP).

12. A computer system comprising:

first instructions stored in a first non-transitory machine-readable medium for execution by a first processor and configured to cause the first processor to perform operations comprising;

providing for identification, using a first management application in a managed network device, network management objects associated with the managed network device that are not included in an existing management information base (MIB) associated with the managed network device, the first management application configured for handling network management objects that are not included in the existing MIB;

including the identified network management objects in a new MIB; and

generating a first policy file for association with the new MIB based on the identified network management objects, wherein the first policy file is generated outside the existing MIB and includes policies used for obtaining values of the identified network management objects from the first management application;

means for loading the new MIB on the managed network device, including loading the first policy file on the managed network device; and

second instructions stored in a second non-transitory machine-readable medium for execution by a second processor and configured to cause the second processor to perform operations comprising;

receiving, at the managed network device, a query from a managing network device for a value of a network management object included in the new MIB; and

responsive to receiving the query;

extracting, using the first policy file, the queried value from the first management application;

converting, using the first policy file, the extracted value to a syntax that is compatible with a second management application associated with the managing network device; and

populating, using the first policy file, the new MIB with the converted value during runtime of the managed network device.

13. The computer system of claim 12 further comprising second instructions stored in the second non-transitory machine-readable medium for execution by the second processor and configured to cause the second processor to perform operations comprising:

converting an existing syntax of the extracted value to a syntax of formal specifications compatible with the second management application; and

using the populated new MIB to service the query from the managing network device.

14. A computer program product, embodied in a non-transitory machine-readable storage medium including instructions executable by a processor and configured to cause the processor to perform operations comprising:

identifying network management objects associated with a managed network device that are available in a first management application in the managed network device, the network management objects not included in an existing management information base (MIB) associated with the managed network device, the first management application configured for handling network management objects that are not included in the existing MIB;

including the identified network management objects in a new MIB;

generating a first policy file for association with the new MIB based on the identified network management objects, wherein the first policy file is generated outside the existing MIB and includes policies used for obtaining values of the identified network management objects from the first management application;

loading the new MIB on the managed network device, including loading the first policy file on the managed network device;

receiving, at the managed network device, a query from a managing network device for a value of a network management object included in the new MIB; and

responsive to receiving the query;

extracting, using the first policy file, the queried value from the first management application;

converting, using the first policy file, the extracted value to a syntax that is compatible with a second management application associated with the managing network device; and

populating, using the first policy file, the new MIB with the converted value during runtime of the managed network device.

15. The computer program product of claim 14, wherein identification of network management objects and generating the associated first policy file are user-defined.

19. The computer program product of claim 14, wherein the first management application is selected from the group consisting of a Command Line Interface (CLI), Simple Network Management Protocol (SNMP), eXtensible Markup Language (XML) and Hyper Text Transfer Protocol (HTTP).

16. In a network, a managed network device adapted to perform operations comprising:

identifying network management objects associated with a managed network device that are available in a first management application in the managed network device, the network management objects not included in an existing management information base (MIB) associated with the managed network device, the first management application configured for handling network management objects that are not included in the existing MIB;

including the identified network management objects in a new MIB;

generating a first policy file for association with the new MIB based on the identified network management objects, wherein the first policy file is generated outside the existing MIB and includes policies used for obtaining values of the identified network management objects from the first management application;

loading the new MIB on the managed network device, including loading the first policy file on the managed network device;

receiving, at the managed network device, a query from a managing network device for a value of a network management object included in the new MIB; and

responsive to receiving the query;

extracting, using the first policy file, the queried value from the first management application;

converting, using the first policy file, the extracted value to a syntax that is compatible with a second management application associated with the managing network device; and

populating, using the first policy file, the new MIB with the converted value during runtime of the managed network device.

17. The managed network device of claim 16 wherein the network management objects are user-defined.

20. The managed network device of claim 16, wherein the first management application is selected from the group consisting of a Command Line Interface (CLI), Simple Network Management Protocol (SNMP), eXtensible Markup Language (XML) and Hyper Text Transfer Protocol (HTTP).