User's Guide

Troubleshooting HyperFabric
Determining Whether a Switch is Faulty
Chapter 6
130
Determining Whether a Switch is Faulty
If you suspect that a HyperFabric switch is faulty, follow the steps below to determine if
the switch needs replacing.
The steps for determining if an HF2 switch is faulty are as follows:
Step 1. Check the cards/switch module in the switch—the integrated Ethernet management
LAN adapter card, integrated 8-port fibre card, and switch module in the expansion slot:
a. If the card/switch module is functioning correctly, its “Operating/Fault” LED shows as
solid green.
b. If the card/switch module is experiencing a fault, its “Operating/Fault” LED shows as
solid yellow.
c. If the card/switch module is not operating, its “Operating/Fault” LED is off.
Step 2. Check the switch’s power:
a. If the power to the switch is on, the “Power A” and “Power B” LEDs both show as solid
green.
b. If only one of the “Power” LEDs shows as solid green, the switch is still operational.
However, the integrated Ethernet management LAN adapter card should be replaced
soon. (Remember, it can be replaced by qualified Hewlett-Packard personnel only.)
c. If both “Power” LEDs are off, the enclosure (the power supply, backplane, and
fan-monitoring board) must be replaced by qualified Hewlett-Packard personnel only.
Step 3. Check the switch’s Ethernet ports:
a. If the port is connected to an operational Ethernet network, the port’s LED
(“Ethernet Port Main” or “Ethernet Port Aux”) shows as solid or blinking green.
b. If the port is disconnected, or connected to an Ethernet network that is not
operational, the port’s LED is off.
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 fibre card or the A6388A HF2 8-port fibre
switch module in the expansion slot, use a fibre loopback plug. (A fibre loopback
plug [HP part number A6384-67004] is shipped with each HF2 switch).
• If the port is on the A6389A HF2 4-port copper switch module in the expansion
slot, use a copper loopback plug.
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.