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

Troubleshooting the AT-8400 Line Cards

AT-8411 Line
Cards
This section describes what to do if you encounter problems with the
AT-8411, AT-8412, and AT-8413 line cards. Check the LEDs on the
AT-8400 line cards and then use the following guidelines.
If the LINK/ACT or L/A LED is OFF on the AT-8411, AT-8412, or AT-8413
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 current twisted-pair cable with a 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 some 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 and some
remain OFF and the card is operating properly, then the LEDs that
are OFF may be burned out. Call Technical Support.
❑ If the LINK/ACT and LINK 10/100 LEDs are steady green, but the
RDY LED is OFF the card did not boot properly. Check the console
AT-8400 Series Switch Reference Guide
101