H3C Technologies H3C WA3600 Series Access Points - Manual (Page 101)

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Table 43 Configuration items
Item Description
Testing
type
External.
Sets the loopback test type, which can be selected between External and Internal.
Internal.
3. Click Test to start the loopback test.
The Result box displays the test results.
Figure 85 Loopback test result
Configuration guidelines
When you perform a loopback test, follow these guidelines:
• 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 works in full duplex mode when the loopback test is performed, and restores its
original duplex mode after the loopback test.