Product specifications

Diagnostics and Utilities Window 4 – QLview for Fibre Windows
4-24 FC0051101-00 A
❑ Loopback and Read/Write Buffer Test. The loopback test is internal to
the QLA2xxx adapter. It evaluates the fibre channel loop stability and error
rate. The test transmits and receives (loopback) the specified data and
checks for the frame Cyclic Redundancy Check (CRC), disparity, and
length errors.
The Read/Write Buffer test sends data through the SCSI Write Buffer
command to a target device. It then reads the data back through the SCSI
Read Buffer command and compares the data for errors. The test also
compares the link status of the device before and after the Read/Write Buffer
test. If errors occur, the test indicates a broken or unreliable link between
the adapter and the device.
See section 5.7.2 for instructions on performing these tests.