User manual

B-1

PPENDIX

ROUBLESHOOTING

Table B-1 Troubleshooting Chart

Symptom Action

Cannot connect using

Telnet, Web browser,

or SNMP software

• Ensure that you have configured the agent with a valid IP

address, subnet mask and default gateway.

• If you are trying to connect to the agent via the IP address

for a tagged VLAN group, your management station must

include the appropriate tag in its transmitted frames.

• 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 or SSH, you may have

exceeded the maximum number of concurrent Telnet/SSH

sessions permitted. Try connecting again at a later time.

Cannot access

the on-board

configuration

program via a serial

port connection

• Ensure that you have set the terminal emulator program to

VT100 compatible, 8 data bits, 1 stop bit, no parity, and set

the baud rate to any of the following (9600, 19200, 38400,

57600, 115200 bps).

• Check that the null-modem serial cable conforms to the

pin-out connections provided in the Installation Guide.

Forgot or lost the

password

• Contact SMC Technical Support for help.