![](http://pdfasset.owneriq.net/6/90/69029205-8bce-4051-bf2a-3f7a074bd3a4/69029205-8bce-4051-bf2a-3f7a074bd3a4-bg33b.png)
B-1
A
PPENDIX
B
T
ROUBLESHOOTING
Troubleshooting Chart
Symptom Action
Cannot connect using
Telnet, web browser,
or SNMP software
• Be sure you have configured the VLAN interface through which the
management station is connected with a valid IP address, subnet mask
and default gateway.
• If you are trying to connect to the switch 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
• Be sure you have set the terminal emulator program to VT100
compatible, 8 data bits, 1 stop bit, no parity, and the baud rate set 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 your local distributor.