System and method for assuring the operation of network devices in bridged networks
US8811235B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2012 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Oct 23, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/552
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a spanning tree protocol (STP) is executed to assign a first port of an intermediate network device to a Root Port Role, a second port of the intermediate network device to an Alternate Port Role, a third port of the intermediate network device to a Designated Port Role, and a fourth port of the intermediate network device to a Backup Port Role. At least one bridge protocol data unit (BPDU) message is periodically sent from the first port assigned Root Port Role, the second port assigned Alternate Port Role and the fourth port assigned Backup Port Role, irrespective of receipt of any BPDU messages from neighboring intermediate network devices. In response to a failure to receive a BPDU message from a neighboring intermediate network device on the third port assigned Designated Port Role within a threshold amount of time, one or more actions are taken.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.