User`s manual

AXIS 2490 User’s Manual Troubleshooting
25
Test a COM Port Redirector
Configure the COM Port Redirector to connect to the host and the port. Enable or disable
the use of telnet options (RFC2217), depending on the settings in the AXIS 2490 Serial
Server. Start a second instance of the terminal program instead of using telnet. Whatever
you type in the terminal programs should appear in the other terminal window.
Symptoms, Possible Causes and Remedial Actions
Symptoms Possible causes Remedial actions
The AXIS 2490 cannot be
accessed from a browser.
The IP address is already used
by another device.
Disconnect your AXIS 2490 from the network, run the PING utility
and follow the appropriate recommendations.
The IP address is located
within a different subnet.
Run the PING utility. If the utility returns “no response” or similar,
in Windows 95/98 or Windows NT/2000, you should then check
that the IP address for your AXIS 2490 is on the same subnet as
your workstation.
If these subnets are different, the IP address cannot be set from the
workstation. Please contact your network administrator.
In Windows 95, the ARP
table was empty when you
tried to set the IP address.
If the table is empty, re-install the product ensuring that the IP
address for your own PC is also used. Type
arp -a to view the ARP
table.
Proxy server. Try disabling the proxy default in your browser.
Other networking problems. Try replacing your network cable.
Test the network interface of the product by connecting a local
computer to the unit, using a standard Crossover (hub-to-hub)
Cable.
If the above actions don’t solve the problem, the AXIS 2490 may be
faulty. In this case, try to localize the problem by connecting the
AXIS 2490 to the serial port of a local computer, using a Null
Modem Cable; and report your findings to your local distributor.
The Power indicator is not
constantly lit.
Faulty power supply. Verify that you are using an AXIS PS-B power supply.
The Status indicator flashes
rapidly.
Hardware failure. Contact your Axis dealer.
Your AXIS 2490 works
locally, but not externally.
Firewall protection. Check the Internet firewall with your system administrator.
Default routers required. Check if you need to configure the default router settings.
"Unable to connect to
remote host: Connection
refused" or similar error
message.
The IP settings in the 2490
are wrong.
Check the IP number, router and netmask settings.