Detecting and mitigating forwarding loops in stateful network devices
US9258213B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 2012 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | Mar 14, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W80/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a stateful device receives a packet on a particular interface of a stateful device in a computer network, where the packet includes source identification and destination identification. The source identification and destination identification of the packet may then be swapped and checked against a stateful connection table managed at the stateful device for the particular interface, such that a loop may be detected at the particular interface in response to the swapped source identification and destination identification matching an existing entry in the stateful connection table. In the event there is such a detected loop, the packet (e.g., and any subsequent similar packets) may to be dropped, accordingly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.