Systems and methods to monitor communications to identify a communications problem

• US 7,978,627 B2
• Filed: 10/21/2009
• Issued: 07/12/2011
• Est. Priority Date: 06/28/2002
• Status: Expired due to Fees

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Massengill, David E., Taylor, William Scott
• Primary Examiner(s): Trost, IV; William
• Assistant Examiner(s): Nguyen; Toan D
• Application Number:
  US12/603,313
• Publication Number:
  US 20100039955A1
• Time in Patent Office: 629 Days
• Field of Search: 370/229, 370/254, 370/358, 370/395.1, 370/395.6, 370/395.61, 3702411-252, 709/245, 709223-225
• US Class Current: 370/252
• CPC Class Codes: H04L 41/0631 using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
• CPC Class Codes: H04L 41/16 using machine learning or artificial intelligence
• CPC Class Codes: H04L 41/22 comprising specially adapted graphical user interfaces [GUI]
• CPC Class Codes: H04L 43/12 Network monitoring probes
• CPC Class Codes: H04L 43/20 the monitoring system or the monitored elements being virtualised, abstracted or software-defined entities, e.g. SDN or NFV

Abstract

Systems and methods to monitor communications to identify a communications problem are disclosed. An example method to monitor communication includes mirroring a first port on a first network element communicatively coupled to a virtual circuit to a second port on a second network element communicatively coupled to the virtual circuit, mirroring a third port on a third network element coupled to the virtual circuit to the second network element, monitoring mirrored communications data at the second network element by receiving communications data on the second port that are sent to the first port from the third port or from the first port to the third port, and analyzing the monitored communications data to identify a communications problem based on a difference between communications data mirrored from the first port and communications data mirrored from the third port.

Claims

1. A method for monitoring communication comprising:

mirroring a first port on a first network element communicatively coupled to a virtual circuit to a second port on a second network element communicatively coupled to the virtual circuit;

mirroring a third port on a third network element coupled to the virtual circuit to the second network element;

monitoring mirrored communications data at the second network element by receiving communications data on the second port that are sent to the first port from the third port or from the first port to the third port; and

analyzing the monitored communications data to identify a communications problem based on a difference between communications data mirrored from the first port and communications data mirrored from the third port.

2. The method as defined in claim 1, further comprising receiving at the second port a first signal input to the first port and a second signal output from the third port, wherein the first and second signals correspond to a message transmitted from the third network element to the first network element.

3. The method as defined in claim 2, further comprising receiving at the second port a first signal output from the first port and a second signal input to the third port, wherein the first and second signals correspond to a message transmitted from the first network element to the third network element.

4. The method as defined in claim 1, wherein the difference between communications data comprises at least one of a size difference or a number of dropped frames.

5. The method as defined in claim 1, wherein the virtual circuit comprises at least one of a frame relay network or an asynchronous transfer mode network.

6. The method as defined in claim 1, wherein the first network element comprises at least one of a channel service unit or a data service unit.

7. The method as defined in claim 1, further comprising sending a first command message to the first network element to mirror the first port to the second port on the second network element and sending a second command message to the third network element to mirror the third port to the second port or to a fourth port on the second network element.

8. A system for monitoring communications, comprising:

an analyzer to transmit a first command message to a first network element and to transmit a second command message to a second network element to remotely monitor communications data between a first port at the first network element and a second port at the second network element using a third port at the analyzer, and to receive communications data on the third port that are sent to the first port from the second port and to receive communications data on the third port that are sent from the first port to the second port, the first network element, the second network element, and the analyzer are to communicate with a network via a virtual circuit, the first command message is to cause the first network element to mirror the first port to the third port, and the second command message is to cause the second network element to mirror the second port to the third port; and

an expert system to process the monitored communications data to identify a communication problem.

9. The system as defined in claim 8, wherein the analyzer receives at the third port a first signal input to the first port and a second signal output from the second port, wherein the first and second signals correspond to a message transmitted from the second network element to the first network element.

10. The system as defined in claim 8, wherein the analyzer receives at the third port a first signal output from the first port and a second signal input to the second port, wherein the first and second signals correspond to a message transmitted from the first network element to the second network element.

11. The system as defined in claim 8, wherein the analyzer generates the command message to include:

a mirror port command;

a source network element port identifier to identify the first port; and

a destination network element port identifier to identify the second port.

12. The system as defined in claim 11, wherein the command message comprises a transaction language 1 (TL1) command message.

13. The system as defined in claim 12, wherein the TLI command message comprises:

a command code, instructing the first network element to mirror the first port;

a target identifier identifying the first network element; and

an access identifier, identifying the first port.

14. The system as defined in claim 8, wherein the expert system comprises a spreadsheet application to import data from the analyzer and present the data graphically.