Troubleshooting; Configuration Terminal Problems; No Terminal Display; Garbled Terminal Display - HP A8800 Installation Manual

Troubleshooting

This chapter describes how to troubleshoot router installation failures.
The router power supply system, fans, and cards have multiple LEDs to help you locate failures.

Configuration terminal problems

If the configuration environment setup is correct, the configuration terminal displays boot information
when the router is powered on. If the setup is incorrect, the configuration terminal displays nothing or
garbled text.

No terminal display

If the configuration terminal displays nothing when the router is powered on, verify that:
The power supply system works correctly.
•
The MPU works correctly.
•
The console cable has been connected to the console port of the MPU.
•
If no problem is found, the following reasons may apply:
The console cable is connected to an incorrect serial interface. (The the serial interface in use is
•
not the one set on the terminal.)
The properties of the terminal are incorrect. You must configure the console terminal as follows:
•
set Bits per second to 9600, Data bits to 8, Parity to None, Stop bits to 1, Flow control to None,
and Terminal Emulation to VT100.
The console cable fails. If the console cable fails, you can replace a cable.
•

Garbled terminal display

If terminal display is garbled, verify that the following settings are configured for the terminal (for
example, HyperTerminal):
Baud rate—9600
•
Data bits—8
•
Parity—none
•
Stop bits—1
•
Flow control—none
•
Emulation—VT100
•

Power supply system failure

The following tables provide LED information for AC and DC power supplies.
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