HP ProCurve 2224 Installation Manual page 34

Troubleshooting
Diagnosing with the LEDs
Tip
Number Problem
°
A switch hardware
failure has
occurred during
self test.
±
The switch has
experienced a
failure during self
test or operation.
²
The network
connection is not
working properly.
³
An unsupported
transceiver module
has been installed
in the transceiver
slot.
3-4
Try power cycling the switch. If the fault indication reoccurs, the switch may have
failed. Call your HP-authorized LAN dealer, or use the electronic support services
from HP to get assistance. See the Customer Support/Warranty card for more
information.
Try resetting the switch by pressing the Reset button on the front of the switch, or
by power cycling the switch.
If this does not resolve the problem, contact your HP-authorized LAN dealer, or use
the electronic support services from HP to get assistance. See the Customer
Support/Warranty card for more information.
Try the following procedures:
• For the indicated port, verify that both ends of the cabling, at the switch and the
connected device, are snug.
• Verify the connected device and switch are both powered on and operating
correctly.
• Verify that you have used the correct cable type for the connection.
- for twisted-pair connections, in general, for connecting to an end node, use
"straight- through" cable; for connecting to MDI-X ports on hubs or other switch-
es, use "crossover" cable.
- for fiber-optic connections, verify that the transmit port on the switch is con-
nected to the receive port on the connected device, and the switch receive port
is connected to the transmit port on the connected device.
• Verify that the connected devices comply with the IEEE 802.3 standard, including
transmission of the Link Beat signal. See "Testing Twisted-Pair Cabling" on page
3-5.
• Try the "Testing End-to-End Network Communications" procedures on page 3-6.
• If the other procedures don't resolve the problem, try using a different port or a
different cable.
The Switch 2224 supports installation of only the HP J3193B 100Base-FX Fiber-Optic
Transceiver Module. If you have installed any other transceiver module, the Port 1
Indicator LED (labeled "100FX port used as port 1") will blink simultaneously with the
switch Fault LED.
Solution