Error detection and recovery for sequential access devices in a fibre channel protocol
US6148421A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 1998 |
| Grant date | Nov 14, 2000 |
| Priority date | — |
| Expiry date | May 29, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/1883
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for detecting and correcting error conditions on sequential devices in a private loop direct access fiber channel network respectively include the steps and instructions for determining the state of an exchange using an initiator and initiating an appropriate sequence level recovery using the initiator. The invention further includes determining whether a target response is overdue using a timer in conjunction with internal driver state information for indicating that packet information may have been lost. The invention further requests exchange and sequence state information from the target for determining the need for corrective action and takes the needed corrective action, such as resending sequence information, requesting that the target resend sequence information, or providing early indication to the ULP that an error has occurred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.