Gigabit Ethernet Switch Management Guide

A-1
A PPENDIX A
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.
Can’t 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.