System and method for real-time diagnosis of routing problems
US7898955B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2006 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Aug 2, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for detecting and diagnosing routing problems in a network in real-time by recording TCP flow information from at least one server to at least one prefix, and observing retransmission packets communicated from the at least one server to the at least one prefix. When a predetermined threshold for TCP flows to a prefix is reached, traceroutes may be triggered to a destination in the prefix, and the traceroutes analyzed to determine whether to issue an alarm for a routing failure. The system includes a real-time data collection engine for recording unidirectional TCP flow information, a real-time detection engine for observing the retransmission packets and issuing a warning upon a retransmission counter exceeding a predetermined threshold, and a real-time diagnosis engine for triggering at least one traceroute to a destination in the prefix that is randomly selected from TCP flows in retransmission states.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.