HP ProCurve 408 Installation Manual page 34

Troubleshooting
Diagnosing With the LEDs
Tip
Number Problem
The network
connection is
not working
properly.
3-6
Try the following procedures:
• For the indicated port, verify that both ends of
the cabling, at the switch and the connected
device, are secure.
• 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 from an MDI-X port to an MDI port,
use "straight- through" cable; if connecting to
MDI-X ports at both ends of a cable, use
"crossover" cable.
- if the connection is to port 8, make sure the
position of the MDI-X/MDI Select button is
correct for the type of connection. See page
1-2 for more information.
• Verify that the connected devices comply with
the IEEE 802.3 standard, including transmis-
sion of the Link signal. See "Testing Twisted-
Pair Cabling" on page 3-7.
• If the other procedures don't resolve the prob-
lem, try using a different port or a different
cable.
Solution