Dell Emulex Family of Adapters - Manual (Page 1319)

OneCommand Manager for VMware vCenter Version 10.2 User Manual P010089-01A Rev. A
9. Diagnostics
OneConnect Diagnostic Tests
1319
OneConnect Diagnostic Tests
Running Loopback Tests
Note: When running port diagnostic tests using OneCommand Manager for VMware
vCenter, do not perform any active management operations on the ESXi host.
Run the following loopback tests:

PHY Loopback – The PHY loopback test connects the transmit output of the
physical layer to the receive input of the physical layer. The data is transmitted,
received, and checked for data miscompute errors.

MAC Loopback – The MAC loopback test connects the transmit output of the
MAC controller to the receive input of the MAC controller (bypassing the PHY).
To run loopback tests:
1. From the Emulex Device Management tree-view, select the physical port on which
you want to run the loopback test.
2. Select the Diagnostics tab. In the Loopback Test area of the dialog box, choose the
type of loopback test you want to run and define the loopback test parameters.
Figure 9-12 OneConnect Adapter Diagnostics Tab
You must insert a loopback plug in the selected adapter before running an External
Loopback test. Also, you must ensure that the NIC function of the port goes to a
link up state.
3. Click Start Test. The following warning appears: