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Appendix A: Troubleshooting
Troubleshooting Chart
Symptom
Cannot connect using
Telnet, Web browser, or
SNMP software
Can't access the on-board
configuration program via
a serial port connection
Forgot or lost the
password
Troubleshooting Chart
Action
• Be sure to have configured the agent with a valid IP address, subnet
mask and default gateway.
• Check that you have a valid network connection to the switch and that
the port you are using has not been disabled.
• Check network cabling between the management station and the
switch.
• If you cannot connect using Telnet, you may have exceeded the
maximum number of concurrent Telnet sessions permitted. Try
connecting again at a later time.
• Be sure to have set the terminal emulator program to VT100 compatible,
8 data bits, 1 stop bit, no parity and 9600 bps.
• If the switch is configured for Auto (baud rate detection), the terminal
emulator program must be set at 2400~19200 baud, 8 data bits, 1 stop
bit, no parity, and flow control set to none. Also, you must first press the
Enter key once to set the data rate and initialize the connection.
• Check that the null-modem serial cable conforms to the pin-out
connections provided in Appendix B.
• Contact Alcatel Technical Support for help.
A-1
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