IBM 8265 Nways ATM Switch, User Manual

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Diagnosing Problems Concerning the CPSW Console
The following section describes the problems that may arise after attaching the local console to the CPSW
module through the RS-232 Console port.
No prompt appears on your console screen when you press ENTER.
Steps to Take:
1. Check that the RS-232 cable meets the specifications described in
IBM 8265 Planning and Site Preparation
Guide, GA33-0460.
2. Check that the RS-232 cable is securely plugged into the CPSW module and the console in the correct ports.
3. The terminal parameters do not match the 8265 communications parameters. Use Telnet to modify the terminal
parameters, using the SET TERMINAL command.
Ÿ Try using the default settings on the terminal (the default parameters are: 9600 bauds, 8 data bits, 1 stop bit,
no parity). If this does not work, try different settings until you find the right configuration.
Characters appear on the screen but they are not legible.
Steps to Take:
1. Make sure that the attached console is an ASCII terminal.
2. Check the terminal parameters, especially the baud-rate, parity, and data bits. The default parameters are: 9600
bauds, 8 data bits, 1 stop bit, no parity. If these values do not work, try different settings until you find the right
configuration.
3. Replace the ASCII terminal.
You cannot enter commands reserved for the ATM network administrator, or the SET commands
do not work.
Steps to Take:
1. Make sure that you are logged on as the administrator.
After you enter the first part of a command and press the space bar, the rest of the command is
not automatically filled in.
Steps to Take:
1. Enter more letters in the command in order to distinguish it from other commands that are written similarly. Then
press the space bar again.
Random characters are lost.
Steps to Take:
1. Set the flow control on the console to XON/XOFF.
Some characters are lost when you are connected to the CPSW module through a modem.
Steps to Take:
1. Make sure that the STOP_BITS parameter on the console is set to 1.
Appendix A. Troubleshooting
129