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Problems with the Configuration Console
If the normal console prompt does not appear after attaching the configuration console to the workgroup
switch, or if you have problems entering configuration commands on the console, follow the
troubleshooting procedures listed below.
No prompt appears on the console screen after you press Enter.
Steps to Take:
1. Perform the wrap test described in “Console Port Wrap Test” on page 157. If the wrap test is OK, proceed to
step 2.
2. Check that the RS-232 cable meets the specifications described in Appendix B, “Cables, Pins and Connectors” on
page 189.
3. Check that the RS-232 cable is securely plugged into the workgroup switch and the console using the correct
ports.
4. If you know that the IP parameters are already set on the workgroup switch, try to open a TELNET session to it.
Then, change the RS-232 parameters using the SET TERMINAL commands.
5. Try using the default settings on the console (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 console 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.
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 workgroup switch through a modem.
Steps to Take:
1. Make sure that the STOP_BITS parameter on the console is set to 1.
When you power ON the workgroup switch, your last configuration settings are not loaded. A different
configuration is activated.
Steps to Take:
1. Re-enter the configuration settings and save them using the SAVE command.
Chapter 21. Troubleshooting
155
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