Network fault information management system in which fault nodes are displayed in tree form

• US 6,499,117 B1
• Filed: 01/10/2000
• Issued: 12/24/2002
• Est. Priority Date: 01/14/1999
• Status: Expired due to Fees

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Tanaka, Katsuyuki
• Primary Examiner(s): Iqbal, Nadeem
• Application Number:
  US09/480,113
• Time in Patent Office: 1,079 Days
• Field of Search: 714/49, 714/52, 714/57, 714/56, 714/47, 714/48, 714/43, 714/25, 714/26, 714/39, 709/223, 709/226, 709/220
• US Class Current: 714/49
• CPC Class Codes: H04L 41/0654 using network fault recovery ring fault isolation or reconfiguration in loop networks without recovery actions by a network management system H04L12/437
• CPC Class Codes: H04L 41/0677 Localisation of faults

Abstract

A network fault managing system for a network including network elements as nodes includes a fault node indication data storage section, a fault indication data storage section, a flag, a fault node indication data processing section, a fault indication data processing section and an output unit. The fault node indication data storage section stores a fault node indication data set in which fault nodes are managed in a tree form. The fault node indication data processing section receives a fault association notice having a fault occurrence position identifier and a fault indication data, the fault occurrence position identifier indicating a fault node in which a fault has occurred, and the fault indication data indicating data associated with the fault, and determines whether a fault node indication data corresponding to the fault node specified by the fault occurrence position identifier of the fault association notice is present in the fault node indication data set. Also, the fault node indication data processing section generates the fault node indication data based on the fault occurrence position identifier to store in the fault node indication data set of the fault node indication data storage section, when the fault node indication data is not present in the fault node indication data set, and sets the flag.

Claims

1. A method of managing faults on a network including network elements as nodes, comprising:

receiving a fault association data having a fault occurrence position identifier and a fault data, said fault occurrence position identifier indicating a fault node in which a fault has occurred, and said fault data indicating a data associated with said fault;

determining whether any fault node indication data corresponding to said fault node specified by said fault occurrence position identifier of said fault association data is present in a fault node indication data set in a tree form;

generating a fault node indication data based on said fault occurrence position identifier to add to said fault node indication data set in the tree form, when any fault node indication data corresponding to said fault node specified by said fault occurrence position identifier is not present in a fault node indication data set;

determining whether any fault indication data corresponding to said fault node indication data is present in a fault indication data set, said fault indication data indicating a type of said fault;

generating a fault indication data corresponding to said fault node indication data based on said fault data to add to said fault indication data set, when said fault indication data corresponding to said fault node indication data is not present in said fault indication data set; and

displaying said fault node indication data set in the tree form and said fault indication data set in response to said fault association data or a display instruction.

2. A method of managing fault on a network according to claim 1, wherein said fault data of said fault association data includes a restoration data indicating that said fault has been restored, and

wherein said method further comprises:

deleting said fault node indication data corresponding to said fault association data from said fault node indication data set and said fault indication data corresponding to said fault association data from said fault indication data set in response to said restoration data of said fault association data.

3. A method of managing fault on a network according to claim 2, wherein said fault data of said fault association data includes an fault importance level indicating whether said fault is important, and said fault indication data includes a fault importance indication data, and

wherein said method further comprises:

updating said fault importance indication data of said fault indication data corresponding to said fault node specified by said fault occurrence position identifier of said fault association data based on said fault importance level, when said fault node indication data and said fault indication data are not generated and said fault data of said fault association data does not include said restoration data.

4. A method of managing fault on a network according to claim 1, wherein said generating a fault node indication data further includes:

generating a first display indication data corresponding to said fault node specified by said fault occurrence position identifier, said first display indication data including a symbol, and

wherein said generating a fault indication data further includes;

generating a second display indication data for said fault indication data corresponding to said fault node specified by said fault occurrence position identifier, said second display indication data including a character string, and

wherein said displaying includes;

displaying said fault node indication data set in the tree form and said fault indication data set based on said first and second display indication data in response to said fault association data or said display instruction.

5. A method of managing fault on a network according to claim 2, wherein said generating a fault node indication data further includes:

generating a first display indication data corresponding to said fault node specified by said fault occurrence position identifier, said first display indication data including a symbol, and

wherein said generating a fault indication data further includes;

generating a second display indication data for said fault indication data corresponding to said fault node specified by said fault occurrence position identifier, said second display indication data including a character string,

wherein said deleting further includes;

deleting said first and second display indication data respectively corresponding to said fault node indication data and said fault indication data, and

wherein said displaying includes;

displaying said fault node indication data set in said tree form and said fault indication data set based on said first and second display indication data in response to said fault association data or said display instruction; and

displaying said fault node indication data set in said tree form of said fault nodes from which said fault node is deleted.

6. A method of managing fault on a network according to claim 3, wherein said generating said fault node indication data further includes:

generating a first display indication data corresponding to said fault node specified by said fault occurrence position identifier, said first display indication data including a symbol, and

wherein said generating said fault indication data further includes;

generating a second display indication data for said fault indication data corresponding to said fault node specified by said fault occurrence position identifier, said second display indication data including a character string,

wherein said updating further includes;

updating said second display indication data corresponding to said fault node specified by said fault occurrence position identifier of said fault association data based on said fault importance level, when said fault node indication data and said fault indication data are not generated and said fault indication data of said fault association data does not include said restoration data; and

wherein said displaying includes;

displaying said tree form of said fault nodes and said data associated with said fault based on said first and second display indication data in response to said fault association data or said display instruction; and

displaying said tree form of said fault nodes in one of which said fault importance level is updated.

7. A method of managing fault on a network according to claim 1, wherein said fault node indication data of said fault node has an address to a list of parent node addresses corresponding to a parent node, an address to a list of child node addresses which designate child nodes connected to said fault node, and a list of fault indication data addresses which designate said fault indication data.

8. A method of managing fault on a network according to claim 1, wherein said generating said fault node indication data includes:

setting a new data generation flag when said fault node indication data is generated, and

wherein said determining whether a fault indication data corresponding to said fault node indication data is present in a fault indication data set includes;

checking said new data generation flag to determine whether a fault indication data corresponding to said fault node indication data is present in a fault indication data set.

9. A network fault managing system for a network including network elements as nodes, comprising:

a fault node indication data storage section storing a fault node indication data set in which fault nodes are managed in a tree form;

a fault indication data storage section;

a flag;

a fault node indication data processing section which;

receives a fault association data having a fault occurrence position identifier and a fault indication data, said fault occurrence position identifier indicating a fault node in which a fault has occurred, and said fault indication data indicating data associated with said fault,

determines whether a fault node indication data corresponding to said fault node specified by said fault occurrence position identifier of said fault association data is present in said fault node indication data set,

generates said fault node indication data based on said fault occurrence position identifier to store in said fault node indication data set of said fault node indication data storage section, when said fault node indication data is not present in said fault node indication data set, and

sets said flag;

a fault indication data processing section which;

determines based on said flag, whether a fault indication data corresponding to said fault node indication data is present in a fault indication data set, said fault indication data indicating a type of said fault, and

generates said fault indication data based on said fault indication data to store in fault indication data set of said fault indication data set, when said fault indication data corresponding to said fault node indication data is not present in said fault indication data set; and

an output unit outputting said fault node indication data set in the tree form and at least a part of said fault indication data set.

10. A network fault managing system according to claim 9, wherein said fault indication data of said fault association data includes a restoration data indicating that said fault has been restored, and

wherein said fault node indication data processing section deletes said fault node indication data from said fault node indication data set in response to said restoration data of said fault association data, and

wherein said fault indication data processing section deletes said fault indication data from said fault indication data set in response to said restoration data of said fault association data.

11. A network fault managing system according to claim 10, wherein said fault indication data of said fault association data includes an fault importance level indicating whether said fault is important, and said fault indication data includes a fault importance indication data, and

wherein said fault indication data processing section updates said fault importance indication data of said fault indication data corresponding to said fault node specified by said fault occurrence position identifier of said fault association data based on said fault importance level, when said fault node indication data and said fault indication data are not generated and said fault indication data of said fault association data does not include said restoration data.

12. A network fault managing system according to claim 9, wherein said fault node indication data processing section generates a first display indication data corresponding to said fault node specified by said fault occurrence position identifier, said first display indication data including a symbol, and

wherein said fault indication data processing section generates a second display indication data for said fault indication data corresponding to said fault node specified by said fault occurrence position identifier, said second display indication data including a character string, and

wherein said output unit outputs said tree form of said fault nodes and a data associated with said fault based on said first and second display indication data in response to said fault association data or said display instruction.

13. A network fault managing system according to claim 10, wherein said fault node indication data processing section:

generates a first display indication data corresponding to said fault node specified by said fault occurrence position identifier, said first display indication data including a symbol, and

deletes said first and second display indication data respectively corresponding to said fault node indication data,

wherein said fault indication data processing section;

generates a second display indication data for said fault indication data corresponding to said fault node specified by said fault occurrence position identifier, said second display indication data including a character string, deleting said first and second display indication data respectively corresponding to said fault node indication data and said fault indication data, and

deletes said fault indication data corresponding to said fault node indication data,

wherein said output unit;

outputs said tree form of said fault nodes and a data associated with said fault based on said first and second display indication data in response to said fault association data or said display instruction; and

outputs said tree form of said fault nodes from which said fault node is deleted.

14. A network fault managing system according to claim 11, wherein said fault node indication data processing section generates a first display indication data corresponding to said fault node specified by said fault occurrence position identifier, said first display indication data including a symbol, and

wherein said fault indication data processing section:

generates a second display indication data for said fault indication data corresponding to said fault node specified by said fault occurrence position identifier, said second display indication data including a character string,

updates said second display indication data corresponding to said fault node specified by said fault occurrence position identifier of said fault association data based on said fault importance level, when said fault node indication data and said fault indication data are not generated and said fault indication data of said fault association data does not include said restoration data; and

wherein said output unit;

outputs said tree form of said fault nodes and said data associated with said fault based on said first and second display indication data in response to said fault association data or said display instruction; and

outputs said tree form of said fault nodes in one of which said fault importance level is updated.

15. A network fault managing system according to claim 9, wherein said fault node indication data of said fault node has an address of a list of parent node addresses corresponding to a parent node, an address to a list of child node addresses which designate child nodes connected to said fault node, and a list of fault indication data addresses which designate said fault indication data.

16. A computer-readable recording medium in which a program is stored to execute a method of managing faults on a network including network elements as nodes, comprising:

receiving a fault association data having a fault occurrence position identifier and a fault data, said fault occurrence position identifier indicating a fault node in which a fault has occurred, and said fault data indicating a data associated with said fault;

determining whether any fault node indication data corresponding to said fault node specified by said fault occurrence position identifier of said fault association data is present in a fault node indication data set in a tree form;

generating a fault node indication data based on said fault occurrence position identifier to add to said fault node indication data set in the tee form, when any fault node indication data corresponding to said fault node specified by said fault occurrence position identifier is not present in a fault node indication data set;

determining whether any fault indication data corresponding to said fault node indication data is present in a fault indication data set, said fault indication data indicating a type of said fault;

generating a fault indication data corresponding to said fault node indication data based on said fault data to add to said fault indication data set, when said fault indication data corresponding to said fault node indication data is not present in said fault indication data set; and

displaying said fault node indication data set in the tree form and said fault indication data set in response to said fault association data or a display instruction.

17. A computer-readable recording medium according to claim 16, wherein said fault data of said fault association data includes a restoration data indicating that said fault has been restored, and

wherein said method further comprises:

deleting said fault node indication data corresponding to said fault association data from said fault node indication data set and said fault indication data corresponding to said fault association data from said fault indication data set in response to said restoration data of said fault association data.

18. A computer-readable recording medium according to claim 17, wherein said fault data of said fault association data includes an fault importance level indicating whether said fault is important, and said fault indication data includes a fault importance indication data, and

wherein said method further comprises:

updating said fault importance indication data of said fault indication data corresponding to said fault node specified by said fault occurrence position identifier of said fault association data based on said fault importance level, when said fault node indication data and said fault indication data are not generated and said fault data of said fault association data does not include said restoration data.

19. A computer-readable recording medium according to claim 16, wherein said generating a fault node indication data further includes:

generating a first display indication data corresponding to said fault node specified by said fault occurrence position identifier, said first display indication data including a symbol, and

wherein said generating a fault indication data further includes;

generating a second display indication data for said fault indication data corresponding to said fault node specified by said fault occurrence position identifier, said second display indication data including a character string, and

wherein said displaying includes;

displaying said fault node indication data set in the tree form and said fault indication data set based on said first and second display indication data in response to said fault association data or said display instruction.

20. A computer-readable recording medium according to claim 17, wherein said generating a fault node indication data further includes:

generating a first display indication data corresponding to said fault node specified by said fault occurrence position identifier, said first display indication data including a symbol, and

wherein said generating a fault indication data further includes;

generating a second display indication data for said fault indication data corresponding to said fault node specified by said fault occurrence position identifier, said second display indication data including a character string,

wherein said deleting further includes;

deleting said first and second display indication data respectively corresponding to said fault node indication data and said fault indication data, and

wherein said displaying includes;

displaying said fault node indication data set in said tree form and said fault indication data set based on said first and second display indication data in response to said fault association data or said display instruction; and

displaying said fault node indication data set in said tree form of said fault nodes from which said fault node is deleted.

21. A computer-readable recording medium according to claim 18, wherein said generating said fault node indication data further includes:

generating a first display indication data corresponding to said fault node specified by said fault occurrence position identifier, said first display indication data including a symbol, and

wherein said generating said fault indication data further includes;

generating a second display indication data for said fault indication data corresponding to said fault node specified by said fault occurrence position identifier, said second display indication data including a character string,

wherein said updating further includes;

updating said second display indication data corresponding to said fault node specified by said fault occurrence position identifier of said fault association data based on said fault importance level, when said fault node indication data and said fault indication data are not generated and said fault indication data of said fault association data does not include said restoration data; and

wherein said displaying includes;

displaying said tree form of said fault nodes and said data associated with said fault based on said first and second display indication data in response to said fault association data or said display instruction; and

displaying said tree form of said fault nodes in one of which said fault importance level is updated.

22. A computer-readable recording medium according to claim 16, wherein said fault node indication data of said fault node has an address to a list of parent node addresses corresponding to a parent node, an address to a list of child node addresses which designate child nodes connected to said fault node, and a list of fault indication data addresses which designate said fault indication data.

23. A computer-readable recording medium according to claim 16, wherein said generating said fault node indication data includes:

setting a new data generation flag when said fault node indication data is generated, and

wherein said determining whether a fault indication data corresponding to said fault node indication data is present in a fault indication data set includes;

checking said new data generation flag to determine whether a fault indication data corresponding to said fault node indication data is present in a fault indication data set.