Systems and method for monitoring information handling system interfaces through cables having plural links
US7719287B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2007 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Jan 23, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/40006
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A port width module operating in association with SAS controllers determines the operational state of communication across an SAS cable by comparing the number of links at opposing controllers that are capable of supporting communication with the number of links in DWord synchronization. For example, an information handling system capable of communication of four links at an SAS connector communicates in a normal state across two links where the opposing device is a switch that supports only two links at an SAS connector. An LED at the information handling system indicates normal operations with two links in DWord synchronization by receiving the port width of the opposing device, retrieving its own port width, and comparing the port widths with the number of links in DWord synchronization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.