Troubleshooting The At-8401 Management Card - Allied Telesis AT-8400 Series Reference Manual

Troubleshooting the AT-8401 Management Card

Using the Reset button will briefly interrupt network operations on
the AT-8400 line cards.
This section describes what to do if you encounter problems with the
AT-8401 management card. Consult the POWER and MGMT LEDs for
troubleshooting information.
After examining the AT-8401 LEDS, verify that the PWR LED on the
management card is steady green. If it is OFF for more than 10 seconds,
do the following:
❑ Check that the power cord is securely connected to the power
outlet.
❑ Check that the management card is seated properly.
❑ Check that the power supply is securely seated in the chassis.
❑ Check that Fans A and B, located on the rear of the chassis, are
operating. If either fan is not operating, it is likely that a power
supply has failed.
❑ For an AC chassis, check the power cord is securely seated in the
chassis.
❑ For a DC chassis, check that the wires are connected to the correct
terminals.
If the MGMT LED stays steady amber for more than one minute, you
need to reset the switch. Press the Reset button on the management
card. If the MGMT LED continues to stay steady amber:
❑ For an AC chassis, turn off the power by unplugging the power
cord. Then turn on the power by plugging in the power cord to a
power source.
❑ For a DC chassis or AC chassis, turn off the power by removing a
power supply. Then, reinstall the power supply.
After trying the above methods, if the MGMT LED continues to be steady
amber, call Technical Support.
AT-8400 Chassis Installation Guide
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