Configuration Guidelines - HP 1910 User Manual

Figure 77 Loopback test result

Configuration guidelines

Follow these guidelines when you configure a loopback test:
• You can perform an internal loopback test but not an external loopback test on a port that is
physically down, while you can perform neither test on a port that is manually shut down.
The system does not allow Rate, Duplex, Cable Type and Port Status configuration on a port under
•
a loopback test.
An Ethernet port operates in full duplex mode when the loopback test is performed, and restores its
•
original duplex mode after the loopback test.
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