Troubleshooting The At-8400 Line Cards; At-8411 Line Cards - Allied Telesis AT-8400 Series Reference Manual

Troubleshooting

Troubleshooting the AT-8400 Line Cards

AT-8411 Line
Cards
92
This section describes what to do if you encounter problems with the
AT-8411, AT-8412, AT-8413, and AT-8414 line cards. Check the LEDs on
the AT-8400 line cards and then use the following guidelines.
If the LNK/ACT or L/A LED is OFF on the AT-8411, AT-8412, AT-8413, or
AT-8414 line cards, do the following:
❑ Check that the line card is securely seated in the chassis.
❑ Check that the chassis is receiving power.
❑ Try installing the line card in another slot. You can install AT-8400
line cards in slots one through twelve.
❑ Make sure there is power to the end node.
❑ Check the twisted-pair cable is secure.
❑ Replace the twisted-pair cable with new twisted-pair cable.
❑ Check that the cable is securely connected to the ports on the line
card and on the end node.
❑ Check that the appropriate type of cable for the port is being
used. Consult the installation guide for your AT-8400 line card for
cabling information.
❑ For a fiber optic port, check that the maximum allowable loss
budget has not been exceeded.
Here is information specific to troubleshooting the AT-8411 line card:
❑ If all the LEDs on the line card light up in a random pattern and the
card does not operate properly, check that the line card is
properly seated in the chassis.
❑ If the LEDS on the line card light up in a random pattern, but some
remain unlit and the card is operating properly, then the LEDs that
are off may be burned out. Call Technical Support.
❑ If the LNK/ACT and LNK 10/100 LEDs are steady green, but the
RDY LED is off the card did not boot properly. Check the console
❑ If the AT-8411 line card operates properly, but the RDY LED is off
call Technical Support.
❑ If the card is seated properly, but all the LEDs are off, the card is
not properly initialized. Check the console for initialization
information.