System and method to monitor and determine if an active IPSec tunnel has become disabled
US6668282B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2000 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Jul 6, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L43/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for monitoring the status of an active secure tunnel between a pair of network elements in a communications network. The first network element originates and transmits an Internet Protocol Security (IPSec) test message to a second network element using a first unidirectional secure tunnel in response to the receipt of an active tunnel monitor command. The second network element receives the IPSec test message and transmits a response back to the first network element using a second unidirectional secure tunnel. The number of times that second network element failed to return a response to an IPSec test message is accumulated during a predetermined time interval and then compared with a threshold value to determine if the active secure tunnel has become disabled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.