Administrator's Guide

Troubleshooting HyperFabric
Determining Whether a Switch is Faulty
Chapter 6 155
Step 4. Check the ports on the cards/switch module:
a. Disconnect the cable from the card/switch module port you suspect is
faulty.
b. Attach a loopback plug to the relevant port:
• If the port is on the integrated 8-port fiber card or the A6388A
HF2 8-port fiber switch module in the expansion slot, use a fiber
loopback plug. (A fiber loopback plug [HP part number
A6384-67004] is shipped with each HF2 switch).
c. Determine if the port is faulty:
• If the port is functioning correctly, the “Port x ” LED shows as
solid or blinking green.
• If the port is faulty, the “Port x ” LED is off.
Repeat steps a through c for each port on the cards/switch module, to
determine if any of them are faulty.
d. If the port is faulty, do not use it. Instead, use a known good port on
that card/switch module if one is available. If no good ports are
available, replace that card/switch module. Remember, though, that
the integrated 8-port fiber card can be removed by qualified HP
personnel only. The A6388A and A6389A switch modules can be
removed by you or a qualified HP personnel.
Step 5. If a fan is not running, the fan tray must be replaced by qualified HP
personnel only.