Allied Telesis AT-8500 Series manual Cannot Establish a Local Management Session

Chapter 3: Troubleshooting

Check the FAULT LED. During normal operations, the LED remains off, except for periods when the management software is saving a change to its configuration. If it remains on for an extended period, do the following:

ˆTry resetting the switch by disconnecting and reconnecting the AC power cord. If the switch is a DC model, reset the unit by powering off and the powering on the DC circuit.

ˆIf the FAULT LED remains ON, try downloading a new version of the switch’s management software through the RS-232 terminal port on the front panel of the switch. For instructions, refer to the switch’s software management guide.

ˆIf the LED remains on even after you have tried the above suggestions, the switch may be having a hardware problem. Contact your Allied Telesis representative for assistance.

Cannot Establish a Local Management Session

If you are unable to establish a local management session with the switch through the RS-232 terminal port on the front panel, do the following:

ˆCheck to be sure that the RS-232 cable is securely connected to the RS-232 terminal port on the switch and to the RS-232 port on the terminal or personal computer.

ˆCheck to be sure that you are using a straight-through RS-232 cable. Do not use a cross-over cable.

ˆCheck to be sure that the operating parameters on the terminal or the terminal emulation program, if you are using a personal computer, have been set correctly. The default settings for “Planning the Installation” on page 52the RS-232 terminal port can be found in. See “Planning the Installation” on page 52.

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