Method and apparatus for persisting SNMP variable values

• US 8,051,155 B2
• Filed: 08/30/2005
• Issued: 11/01/2011
• Est. Priority Date: 08/30/2005
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Claise, Benoit
• Primary Examiner(s): DOAN, DUYEN MY
• Application Number:
  US11/215,965
• Publication Number:
  US 20070050498A1
• Time in Patent Office: 2,254 Days
• Field of Search: 709222-223, 717/108
• US Class Current: 709/223
• CPC Class Codes: H04L 41/0213 Standardised network management protocols, e.g. simple network management protocol [SNMP]

Abstract

A method of persisting SNMP (Simple Network Management Protocol) variable values associated with SNMP object IDs for an SNMP managed network element across network element reloads comprises implementing a generic persist operation at the network element; and defining, in conjunction with the generic persist operation, at least one object ID for which a value is to be persisted.

Claims

1. A method of persisting SNMP (Simple Network Management Protocol) variable values associated with SNMP object IDs for an SNMP managed network element comprising:

a network element implementing a generic persist operation;

wherein implementing the generic persist operation comprises;

defining, through one or more user-specified commands in conjunction with the generic persist operation, at least one object ID for which a value is to be persisted;

based on the one or more user-specified commands, determining that persistent storage should occur for values of at least one object ID;

based on the presence of a wild card in said one or more user-specified commands, determining that persistent storage should occur for values of all child objects of a set of child objects hierarchically depending from the at least one object ID;

storing the values of the at least one object ID into non-volatile storage located within the network element, wherein the SNMP object comprises a group object instance and the SNMP objects are represented using a hierarchical structure and the group object instance comprises a first SNMP object and all SNMP objects hierarchically depending from said first SNMP object.

2. A method as claimed in claim 1 in which the SNMP object comprises a management information base (MIB) object and the value comprises an MIB object variable value.

3. A method as claimed in claim 1 in which the SNMP object comprises a specific object instance.

4. A method as claimed in claim 1 in which the SNMP object comprises a group object instance.

5. A method as claimed in claim 4 in which the SNMP objects are represented using a hierarchical structure and the group instance comprises a first SNMP objects and all SNMP objects that hierarchically depend from said first SNMP object.

6. A method as claimed in claim 1 in which the persist operation is configured via the command line interface (CLI) to the network element.

7. A method as claimed in claim 1 in which the persist operation is configured via a further SNMP object.

8. A method as claimed in claim 1 further comprising, upon reload of a managed network element, identifying SNMP objects for which SNMP object values are to be persisted and retrieving the persisted values from non-volatile storage.

24. A method as claimed in claim 1, further comprising:

upon reload of a managed network element, identifying SNMP objects for which SNMP object values are to be persisted;

and retrieving the persisted values from non-volatile storage.

30. A non-transitory computer readable storage medium as claimed in claim 1, further comprising:

upon reload of a managed network element, identifying SNMP objects for which SNMP object values are to be persisted;

and retrieving the persisted values from non-volatile storage.

9. A non-transitory computer readable storage medium comprising one or more sequences of instructions for persisting SNMP MIB variable values associated with SNMP object IDs for an SNMP managed network element which, when executed by one or more processors, cause the one or more processors to perform:

implementing a generic persist operation;

wherein implementing the generic persist operation comprises;

defining, through one or more user-specified commands in conjunction with the generic persist operation, at least one object ID for which a value is to be persisted;

based on the one or more user-specified commands, determining that persistent storage should occur for values of at least one object ID;

based on the presence of a wild card in said one or more user-specified commands, determining that persistent storage should occur for values of all child objects of a set of child objects hierarchically depending from the at least one object ID;

storing the values of the at least one object ID into non-volatile storage located within the network element, wherein the SNMP object comprises a group object instance and the SNMP objects are represented using a hierarchical structure and the group object instance comprises a first SNMP object and all SNMP objects hierarchically depending from said first SNMP object.

12. A non-transitory computer readable storage medium as claimed in claim 9 in which the SNMP object comprises a management information base (MIB) object and the value comprises an MIB object variable value.

13. A non-transitory computer readable storage medium as claimed in claim 9 in which the SNMP object comprises a specific object instance.

14. A non-transitory computer readable storage medium as claimed in claim 9 in which the SNMP object comprises a group object instance.

15. A non-transitory computer readable storage medium as claimed in claim 14 in which:

the SNMP objects are represented using a hierarchical structure, and the group instance comprises a first SNMP object and all SNMP objects that hierarchically depend from said first SNMP object.

16. A non-transitory computer readable storage medium as claimed in claim 9 in which the persist operation is configured via the command line interface (CLI) to the network element.

17. A non-transitory computer readable storage medium as claimed in claim 9 in which the persist operation is configured via a further SNMP object.

18. A non-transitory computer readable storage medium as claimed in claim 9 further comprising, upon reload of a managed network element, identifying SNMP objects for which SNMP object values are to be persisted and retrieving the persisted values from non-volatile storage.

10. An apparatus for persisting SNMP variable values associated with SNMP objects IDs for SNMP managed network element across network element reloads comprising:

a network element;

means for implementing a generic persist operation at the network element;

means for defining, through one or more user-specified commands in conjunction with the generic persist operation, at least one object ID for which a value is to be persisted;

means for determining based on the one or more user-specified commands,

that persistent storage should occur for values of at least one object ID;

means for determining based on the presence of a wild card in said one or more user-specified commands, that persistent storage should occur for values of all child objects of a set of child objects hierarchically depending from the at least one object ID;

means for storing the values of the at least one object ID into non-volatile storage located within the network element, wherein the SNMP object comprises a group object instance and the SNMP objects are represented using a hierarchical structure and the group object instance comprises a first SNMP object and all SNMP objects hierarchically depending from said first SNMP object.

11. An apparatus for persisting SNMP variable values, the apparatus comprising:

one or more processors; and

a non-transitory computer readable medium comprising one or more sequences of instructions for persisting SNMP variables values which, when executed by the one or more processors, cause the one or more processors to perform;

implementing a generic persist operation;

defining, through one or more user-specified commands in conjunction with the generic persist operation, at least one object ID for which a value is to be persisted;

based on the one or more user-specified commands, determining that persistent storage should occur for values of at least one object ID;

based on the presence of a wild card in said one or more user-specified commands, determining that persistent storage should occur for values of all child objects of a set of child objects hierarchically depending from the at least one object ID;

storing the values of the at least one object ID into non-volatile storage located within the network element, wherein the SNMP object comprises a group object instance and the SNMP objects are represented using a hierarchical structure and the group object instance comprises a first SNMP object and all SNMP objects hierarchically depending from said first SNMP object.

19. A method of persisting SNMP (Simple Network Management Protocol) variable values associated with SNMP object IDs for an SNMP managed network element comprising:

receiving one or more user-specified commands;

determining that persistent storage should occur for values of at least one object ID in the one or more user-specified commands;

determining, based on a wild card in the one or more user-specified commands, that persistent storage should occur for values of all child objects of a set of child objects that hierarchically depend from the at least one object ID;

storing the values of the at least one object ID in non-volatile storage, wherein the SNMP object comprises a group object instance and the SNMP objects are represented using a hierarchical structure, and the group object instance comprises a first SNMP object and all SNMP objects that hierarchically depend from the first SNMP object.

20. A method as claimed in claim 19 in which the SNMP object comprises a management information base (MIB) object and the value comprises an MIB object variable value.

21. A method as in claim 19, further comprising:

the SNMP managed network element implementing a generic persist operation;

wherein implementing the generic persist operation comprises;

defining, through one or more user-specified commands in conjunction with the generic persist operation, at least one object ID for which a value is to be persisted.

22. A method as claimed in claim 21 in which the generic persist operation is configured via the command line interface (CLI) to the network element.

23. A method as claimed in claim 19 in which the generic persist operation is configured via a further SNMP object.

25. A non-transitory computer readable storage medium comprising one or more sequences of instructions for persisting SNMP MIB variable values associated with SNMP object IDs for an SNMP managed network element which, when executed by one or more processors, cause the one or more processors to perform:

receiving one or more user-specified commands;

determining that persistent storage should occur for values of at least one object ID in the one or more user-specified commands;

determining, based on a wild card in the one or more user-specified commands, that persistent storage should occur for values of all child objects of a set of child objects that hierarchically depend from the at least one object ID;

storing the values of the at least one object ID in non-volatile storage, wherein the SNMP object comprises a group object instance and the SNMP objects are represented using a hierarchical structure, and the group object instance comprises a first SNMP object and all SNMP objects that hierarchically depend from the first SNMP object.

26. A non-transitory computer readable storage medium as claimed in claim 25 in which the SNMP object comprises a management information base (MIB) object and the value comprises an MIB object variable value.

27. A non-transitory computer readable storage medium as in claim 25, further comprising:

the SNMP managed network element implementing a generic persist operation;

wherein implementing the generic persist operation comprises;

defining, through one or more user-specified commands in conjunction with the generic persist operation, at least one object ID for which a value is to be persisted.

28. A non-transitory computer readable storage medium as claimed in claim 27 in which the generic persist operation is configured via the command line interface (CLI) to the network element.

29. A non-transitory computer readable storage medium as claimed in claim 25 in which the generic persist operation is configured via a further SNMP object.