Users Guide

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19 Troubleshooting
Troubleshooting topics cover the following:
 Hardware Diagnostics
 “Checking Port LEDs” on page 281
 “Troubleshooting Checklist” on page 281
 “Checking if Current Drivers Are Loaded” on page 282
 “Running a Cable Length Test” on page 283
 “Testing Network Connectivity” on page 283
 “Microsoft Virtualization with Hyper-V” on page 284
 “Removing the QLogic BCM57xx and BCM57xxx Device Drivers” on
page 289
 “Upgrading Windows Operating Systems” on page 289
 “QLogic Boot Agent” on page 290
 “QLASP” on page 290
 “Linux” on page 292
 “NPAR” on page 292
 “Kernel Debugging Over Ethernet” on page 293
 “Miscellaneous” on page 293
Hardware Diagnostics
Loopback diagnostic tests are available for testing the adapter hardware. These
tests provide access to the adapter internal and external diagnostics, where
packet information is transmitted across the physical link (for instructions and
information on running tests in Windows environments, see the QCC GUI online
help).