User's Manual

Troubleshooting
112
A
If You Cannot Connect to the Internet
• Check that your computer is properly configured for TCP/IP. See “Configuring the
TCP/IP Protocols” on page 27.
• Make sure the correct network adapter driver is installed for your PC operating
system. If necessary, try reinstalling the driver.
• Check that the network adapter’s speed or duplex mode has not been configured
manually. We recommend setting the adapter to auto-negotiation when installing the
network driver.
Problems Accessing the Management Interface
Table A-1 Troubleshooting Chart
Symptom Action
Cannot connect using Telnet,
web browser, or SNMP
software
• Be sure the Gateway is powered up.
• Check the network cabling between the management station and the
Gateway.
• Check that you have a valid network connection to the Gateway and that
the port you are using has not been disabled.
• 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.
• Be sure the management station has an IP address in the same subnet as
the Gateway’s IP interface to which it is connected.
• If you cannot connect using Telnet
*
, you may have exceeded the
maximum number of concurrent Telnet/SSH sessions permitted. Try
connecting again at a later time.
* Telnet and SSH are not implemented for the current firmware, but will be made available for future releases.
Cannot connect using
Secure Shell
• If you cannot connect using SSH
*
, you may have exceeded the maximum
number of concurrent Telnet/SSH sessions permitted. Try connecting
again at a later time.
•
Be sure the control parameters for the SSH server are properly configured
on the Gateway, and that the SSH client software is properly configured
on the management station.
Forgot or lost the password • Contact your local distributor.