director 2/64 service manual

3–30 director 2/64 service manual
Repair Information
Perform Loopback Tests
This section describes the procedures to perform an:
• Internal loopback test–An internal loopback test checks UPM card circuitry, but
does not check fiber-optic components of a port transceiver. The test is performed
with a device attached to the port, but the test momentarily blocks the port and is
disruptive to the attached device.
• External loopback test–An external loopback test checks UPM card circuitry,
including fiber-optic components of a port transceiver. To perform the test, the
attached device must be quiesced and disconnected from the port, and a
multimode or singlemode loopback plug must be inserted in the port receptacle.
Internal Loopback Test
To perform an internal loopback test for a single port or a UPM card (four ports):
1. Notify the customer a disruptive internal loopback test will be performed on a port
or UPM card. Ensure the customer’s system administrator quiesces Fibre Channel
frame traffic through the port or UPM card, and sets attached devices offline.
NOTE: At the start of the loopback test, the port or UPM card can be online, offline,
blocked, or unblocked.
2. At the HAFM server, open the HAFM application. The Products View displays.
3. Double-click the icon representing the director for which the loopback test will be
performed. The Hardware View for the selected director displays.
4. At the Hardware View, verify the location of the port or UPM card to be tested.
When the mouse pointer is passed over a graphical UPM card on the front view of
the director, the card highlights with a blue border and a pop-up displays with the
following information:
— Port card type (UPM).
— Chassis slot number (0 through 15 inclusive).
— The four consecutive port numbers on the selected card. Valid port numbers
are in the range of 0 through 63 inclusive.
5. Reset each port to be tested:
a. At the Hardware View, double-click the UPM card for which ports are to be
tested. The Port Card View displays.
b. At the Port Card View, right-click the tested port. A menu displays.