System and method to achieve sub-second routing performance

• US 20070268832A1
• Filed: 05/16/2006
• Published: 11/22/2007
• Est. Priority Date: 05/16/2006
• Status: Active Grant

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Zhao, Yongdong, Soon, Shih-Chung Tom, Chen, Holly, Tan, Teong Yee, Zhou, Bei
• Granted Patent: US 8,295,162 B2
• Time in Patent Office: Days
• US Class Current: 370/238
• CPC Class Codes: A61B 17/025 Joint distractors
• CPC Class Codes: A61B 17/1604 Chisels; Rongeurs; Punches; Stamps
• CPC Class Codes: A61B 17/1659 Surgical rasps, files, planes, or scrapers
• CPC Class Codes: A61B 17/1671 for the spine
• CPC Class Codes: A61B 17/1735 for rasps or chisels
• CPC Class Codes: A61B 17/1757 for the spine
• CPC Class Codes: A61B 17/7064 Devices acting on, attached to, or simulating the effect of, vertebral facets; Tools therefor
• CPC Class Codes: A61B 2017/00424 ergonomic, e.g. fitting in fist
• CPC Class Codes: A61B 2017/00429 with a roughened portion
• CPC Class Codes: A61B 2017/0256 for the spine
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04L 45/02 Topology update or discovery
• CPC Class Codes: H04L 45/03 by updating link state protocols
• CPC Class Codes: H04L 45/22 Alternate routing
• CPC Class Codes: H04L 45/28 using route fault recovery
• CPC Class Codes: H04W 28/04 Error control

Abstract

A system and method for routing data, the system having a processor, an interface in communication with the processor and capable of being in communication with a second system for routing data, a memory unit in communication with the processor, the memory unit having a network routing table having a plurality of routes, the plurality of routes having a first route; and a network failure route selection logic including instructions adapted to configure the processor to determine when the first route is inoperative, transmit a first data packet to the second system for routing data when the first route is inoperative and utilize a second route selected from one of the plurality of routes, the second route being different from the first route.

Claims

1. A system for routing data, the system comprising:

a processor;

an interface in communication with the processor and capable of being in communication with a second system for routing data;

a memory unit in communication with the processor, the memory unit having a network routing table having a plurality of routes, the plurality of routes having a first route; and

a network failure route selection logic comprising instructions adapted to configure the processor to determine when the first route is inoperative, transmit a first data packet to the second system for routing data when the first route is inoperative and utilize a second route selected from one of the plurality of routes, the second route being different from the first route.

2. The system of claim 1, wherein the network failure route selection logic further comprises instructions adapted to configure the processor to determine a condition of the first route.

3. The system of claim 2, wherein a first data packet comprises information related to the condition of the first route.

4. The system of claim 2, wherein the condition of the first route is one of a nodal failure or a link failure.

5. The system of claim 1, wherein the network failure route selection logic further comprises instructions adapted to configure the processor to receive a second data packet from the second system for routing data when the second system for routing data determines that the first route is inoperative and utilize a second route selected from one of the plurality of routes, the second route being different from the first route.

6. The system of claim 5, wherein the network failure route selection logic further comprises instructions adapted to configure the processor to determine the condition of the first route.

7. The system of claim 6, wherein the operating condition is one of a link failure or a nodal failure.

8. The system of claim 6, wherein the second data packet comprises information related to the operating condition of the first route.

9. The system of claim 8, wherein the network failure route selection logic further comprises instructions adapted to configure the processor to determine the operating condition of the first route by extracting the operating condition of the first route from the second data packet.

10. A method for routing data for a first system for routing data having a network routing table having a plurality of routes, the plurality of routes having a first route, the method comprising:

determining when the first route is inoperative;

transmitting a first data packet to a second system for routing data when the first route is inoperative; and

utilizing a second route selected from one of the plurality of routes, the second route being different from the first route.

11. The method of claim 10, further comprising the step of determining a condition of the first route.

12. The method of claim 10, wherein the first data packet comprises information related to the condition of the first route.

13. The method of claim 11, wherein the condition of the first route is one of a nodal failure or a link failure.

14. The method of claim 10, further comprising the steps of:

receiving a second data packet from the second system for routing data when the second system for routing data determines that the first route is inoperative; and

utilizing a second route selected from one of the plurality of routes, the second route being different from the first route.

15. The method of claim 14, further comprising the step of determining the condition of the first route.

16. The method of claim 15, wherein the condition is one of a link failure or a nodal failure.

17. The method of claim 15, wherein the second data packet comprises information related to the condition of the first route.

18. The method of claim 17, further comprising the step of determining the operating condition of the first route by extracting the operating condition of the first route from the second data packet.

19. A computer readable medium for a first system for routing data having a network routing table having a plurality of routes, the plurality of routes having, the computer readable medium comprising processor executable code for:

determining when a first route of the plurality of routes is inoperative;

transmitting a first data packet to a second system for routing data when the first route is inoperative; and

utilizing a second route selected from one of the plurality of routes, the second route being different from the first route.

20. The method of claim 19, further comprising the step of determining a condition of the first route.

21. The method of claim 19, wherein the first data packet comprises information related to the condition of the first route.

22. The method of claim 20, wherein the condition of the first route is one of a nodal failure or a link failure.

23. The method of claim 19, further comprising the steps of:

receiving a second data packet from the second system for routing data when the second system for routing data determines that the first route is inoperative; and

utilizing a second route selected from one of the plurality of routes, the second route being different from the first route.

24. The method of claim 23, further comprising the step of determining the condition of the first route.

25. The method of claim 24, wherein the condition is one of a link failure or a nodal failure.

26. The method of claim 24, wherein the second data packet comprises information related to the condition of the first route.

27. The method of claim 26, further comprising the step of determining the operating condition of the first route by extracting the operating condition of the first route from the second data packet.