Ruling out cabling issues, Nx_port (host or storage) issues – HP StorageWorks MSA 2.8 SAN Switch User Manual
Page 236

Troubleshooting
236
Fabric OS Procedures Version 3.1.x/4.1.x User Guide
6. Check the results of the loopback test and proceed as follows:
— If the loopback test failed, the port is bad. Replace the port card.
— If the loopback test did not fail, the SFP was bad.
Ruling Out Cabling Issues
7. Begin by performing the steps in “
By now an SFP problem is ruled out.
8. Insert a new cable into the suspected marginal port.
9. Enter
the portErrShow
command to determine if a problem still exists.
— If the
portErrShow
output displays a normal number of generated
errors, the issue is solved.
— If the
portErrShow
output still displays a high number of generated
errors, move on to “
Nx_Port (Host or Storage) Issues
Nx_Port (Host or Storage) Issues
10. Begin performing the steps in “
By now an SFP problem and a cable problem have been ruled out.
11. Follow the troubleshooting procedures for the host or storage device.
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