Repair Information

•Error statistics.

Click the Refresh button to update statistical information displayed on the Performance View for the selected port. Click the Clear button to reset the cumulative value counts to zero on the Performance View for the selected port. A confirmation dialog box displays before the values are cleared.

Perform Loopback Tests

This section describes procedures to perform an:

•Internal loopback test - an internal loopback test checks internal port, serializer, and deserializer circuitry and checks for the presence of a SFP, but does not check fiber-optic components of the installed SFP. The test can be performed with a switch or device attached to a port.The test momentarily blocks the port and is disruptive to the attached device.

•External loopback test - an external loopback test checks all port circuitry, including fiber-optic components of the installed SFP. To perform the test, the attached switch or device must be quiescent and disconnected from the port, and a multi-mode or single-mode loopback plug must be inserted in the SFP receptacle.

Internal Loopback Test

To perform an internal loopback test for a single port:

1.Notify the customer that a disruptive internal loopback test is to be performed on a port. Ensure the customer’s system administrator quiesces Fibre Channel frame traffic through the port and sets the attached devices offline.

NOTE: An SFP transceiver must be installed in the port during the test. A switch can remain attached during the test.

2.At the HAFM server, open the HAFM application. The Product View displays.

3.Select the icon representing the switch to be tested. The Hardware View for the selected switch displays.

4.At the Hardware View, verify the location of the port to be tested. When the mouse pointer is passed over the graphical port on the front view of the switch, the port highlights with a blue border and a pop-up displays Switch Port.

5.At the navigation control panel, select Port Diagnostics from the Maintenance menu. The Port Diagnostics dialog box displays (Figure 3–14).

6.Select a port for test. To select a port for test, type the port number (0 through 15) in the Port Number field.