Perform Loopback Tests; Internal Loopback Test - HP 316095-B21 - StorageWorks Edge Switch 2/24 Service Manual

Repair Information

Perform Loopback Tests

This section describes procedures to perform an:

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
Note:
remain attached during the test.
2. At the HAFM server, open the HAFM application. The Product View
3. Select the icon representing the switch to be tested. The Hardware View for
4. At the Hardware View, verify the location of the port to be tested. When the
5. At the navigation control panel, select Port Diagnostics from the
6. Type the port number to be tested, or select all ports at the Port Select area of
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Internal loopback test–An internal loopback test checks internal port,
serializer, and deserializer circuitry and checks for the presence of an optical
transceiver, but does not check fiber-optic components of the installed
transceiver. Operation of the attached device is disrupted during the test.
External loopback test–An external loopback test checks all port circuitry,
including fiber-optic components of the installed optical transceiver. To
perform the test, the attached device must be quiesced and disconnected from
the port, and a singlemode or multimode loopback plug must be inserted in
the port.
on a port. Ensure the customer's system administrator quiesces Fibre Channel
frame traffic through the port and sets the attached devices offline.
An SFP transceiver must be installed in the port during the test. A switch can
displays.
the selected switch displays.
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.
Maintenance menu. The Port Diagnostics dialog box displays
the dialog box
(Figure
Edge Switch 2/24 Service Manual
36).