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PPENDIX
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T
ROUBLESHOOTING

Troubleshooting Chart

Troubleshooting Chart
Symptom Action
Cannot connect using
Telnet, Web browser,
or SNMP software
• 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.
Cannot access the
on-board
configuration
program via a serial
port connection
• Be sure to have set the terminal emulator program to
VT100 compatible, 8 data bits, 1 stop bit, no parity and
19200 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.
Forgot or lost the
password
• Contact SMC Technical Support for help.