Network relay device
US9282015B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 22, 2014 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | Jun 1, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L43/0811
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a chassis-type network relay device, fault tolerance for the continuity monitoring function of Ethernet (Registered Trademark) OAM is improved. A first management card and a second management card serving as a main management card and a backup management card have continuity monitoring units which generate monitoring frames for checking continuity between devices and transmit the monitoring frames to a given line card, respectively. Each of a plurality of line cards has a transmission source selecting unit which, when having received respective monitoring frames from both management cards, selects one of the monitoring frames and transmits the selected monitoring frame from a given port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.