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3–26 edge switch 2/16 service manual
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.