Systems and method for automated monitoring of availability in xDSL access networks

• US 7,099,305 B1
• Filed: 04/30/2002
• Issued: 08/29/2006
• Est. Priority Date: 04/30/2002
• Status: Active Grant

• Current Assignee: LGc Pivotal LLC
• Original Assignee: Covad Communications Group Incorporated
• Inventors: Fardid, Reza
• Primary Examiner(s): Patel, Ajit
• Application Number:
  US10/136,138
• Time in Patent Office: 1,582 Days
• Field of Search: 370352-356, 370/389, 370/401, 370/463, 370/465, 375/922
• US Class Current: 370/352
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• CPC Class Codes: H04L 41/5025 by proactively reacting to service quality change, e.g. by reconfiguration after service quality degradation or upgrade
• CPC Class Codes: H04L 43/0817 by checking functioning

Abstract

A system and method for automated monitoring of availability in xDSL access networks are disclosed. An xDSL access network with network availability monitoring generally comprises a measurement device in communication with a DSL access multiplexer (DSLAM) at a central office (CO), a broadband remote access server (BRAS) in communication with the DSLAM, a remote authentication dial-in user service (RADIUS) server in communication with the BRAS, and a data collector at a network operations center (NOC) in communication with the RADIUS server and the measurement device, the data collector being configured to retrieve data from the RADIUS server, the measurement device being configured to automatically establish a PPP session with the BRAS and the RADIUS server being adapted to collect data relating to the PPP session. The measurement device is preferably connected to the DSLAM via an xDSL loop terminating at a DSLAM monitoring port. In addition, the PPP session is preferably authenticated.

Claims

1. An xDSL access network with network availability monitoring, comprising:

a measurement device in communication with a DSL access multiplexer (DSLAM) at a central office;

a broadband remote access server (BRAS) in communication with the DSLAM;

a remote authentication dial-in user service (RADIUS) server in communication with the BRAS; and

a data collector at a network operations center in communication with the RADIUS server and the measurement device, the data collector being configured to retrieve data from the RADIUS server,

wherein the measurement device is configured to automatically establish a PPP session with the BRAS and wherein the RADIUS server is adapted to collect data relating to the PPP session.

2. The xDSL access network with network availability monitoring of claim 1, wherein the data collector is configured to automatically and periodically retrieve the data collected by the RADIUS server relating to the PPP session.

3. The xDSL access network with network availability monitoring of claim 1, wherein the RADIUS server is configured to perform an authentication, authorization, and accounting (AAA) function to automatically time-stamp a start and a termination of the PPP session.

4. The xDSL access network with network availability monitoring of claim 3, wherein the RADIUS server is configured to automatically time-stamp the termination of the PPP session based on loss of a PPP keep-alive between the measurement device and the BRAS.

5. The xDSL access network with network availability monitoring of claim 1, wherein one of the BRAS and the measurement device is configured to automatically and continually attempt to reestablish the PPP session upon termination of the PPP session.

6. The xDSL access network with network availability monitoring of claim 1, wherein the DSLAM includes a monitoring port and wherein the measurement device is in communication with the DSLAM via the DSLAM monitoring port.

7. The xDSL access network with network availability monitoring of claim 1, wherein the measurement device is configured to automatically establish a PPP session with the BRAS via a network access provider (NAP) backbone.

8. The xDSL access network with network availability monitoring of claim 1, wherein the data collector at the network operations center is in communication with the RADIUS server and the measurement device via a router.

9. The xDSL access network with network availability monitoring of claim 1, wherein the measurement device is in communication with the DSLAM via at least one of an xDSL loop and a T1 loop.

10. The xDSL access network with network availability monitoring of claim 1, wherein the data collector includes a data aggregator adapted to aggregate the data collected by the data collector.

11. The xDSL access network with network availability monitoring of claim 1, further comprising a reporter in communication with the data collector and adapted to generate reports based on the data collected by the data collector.

12. The xDSL access network with network availability monitoring of claim 11, wherein the reports are selected from the group consisting of periodic regional, periodic national, minimum, average, and maximum access network availability over the xDSL access network reports, and latency and packet loss reports.

13. The xDSL access network with network availability monitoring of claim 1, wherein the PPP session is an authenticated PPP session.

14. A method for monitoring network availability of an xDSL access network, comprising:

automatically establishing a PPP session by a measurement device to a broadband remote access server (BRAS), the measurement device and the BRAS being in communication with a DSL access multiplexer (DSLAM) at a central office;

automatically collecting data relating to the PPP session by a remote authentication dial-in user service (RADIUS) server, the RADIUS server being in communication with the BRAS; and

automatically retrieving the PPP session data from the RADIUS server by a data collector.

15. The method for monitoring network availability of an xDSL access network of claim 14, wherein said retrieving the PPP session data by the data collector is performed periodically.

16. The method for monitoring network availability of an xDSL access network of claim 14, further comprising performing an authentication, authorization, and accounting (AAA) function to automatically time-stamp a start and a termination of the PPP session by the RADIUS server.

17. The method for monitoring network availability of an xDSL access network of claim 16, wherein the time-stamping of the PPP session termination by the RADIUS server is based on loss of a PPP keep-alive between the measurement device and the BRAS.

18. The method for monitoring network availability of an xDSL access network of claim 14, further comprising automatically and continually attempting to reestablish the PPP session upon termination of the PPP session by the measurement device.

19. The method for monitoring network availability of an xDSL access network of claim 14, wherein the measurement device is in communication with the DSLAM via a monitoring port of the DSLAM.

20. The method for monitoring network availability of an xDSL access network of claim 14, wherein said establishing the PPP session is between the measurement device and the BRAS via a network access provider (NAP) backbone.

21. The method for monitoring network availability of an xDSL access network of claim 14, wherein said retrieving the PPP session data from the RADIUS server by the data collector is via a router.

22. The method for monitoring network availability of an xDSL access network of claim 14, wherein the measurement device is in communication with the DSLAM via one of an xDSL loop and a T1 loop.

23. The method for monitoring network availability of an xDSL access network of claim 14, further comprising aggregating the data collected by the data collector.

24. The method for monitoring network availability of an xDSL access network of claim 14, generating reports based on the PPP session data by a reporter in communication with the data collector.

25. The method for monitoring network availability of an xDSL access network of claim 24, wherein the reports are selected from the group consisting of periodic regional, periodic national, minimum, average, and maximum access network availability over the xDSL access network reports, and latency and packet loss reports.

26. The method for monitoring network availability of an xDSL access network of claim 14, wherein said establishing the PPP session comprises establishing an authenticated PPP session.