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Chapter 5: Troubleshooting
This appendix suggests solutions for problems you may encounter in installing or using the device, and
provides instructions for using several IP utilities to diagnose problems.
Contact Customer Support if these suggestions do not resolve the problem.
Troubleshooting Suggestions
Problem
LEDs
Power LED does not illuminate
after product is turned on.
LINK LAN LED does not illuminate
after Ethernet cable is attached.
Internet Access
My PC cannot access the Internet
My LAN PCs cannot display web
pages on the Internet.
Web pages
I forgot/lost my user ID or
password.
I cannot access the web pages
from my browser.
My changes to the web pages are
not being retained.
Troubleshooting Suggestion
Verify that you are using the power cable provided with the device and
that it is securely connected to the device and a wall socket/power
strip.
Verify that the Ethernet cable is securely connected to your LAN hub
or PC and to the device. Make sure the PC and/or hub is turned on.
Verify that your cable is sufficient for your network requirements. A
100 Mbit/sec network (10BaseTx) should use cables labeled CAT 5. A
10Mbit/sec network may tolerate lower quality cables.
Use the ping utility (discussed in the following section) to check
whether your PC can communicate with the device's LAN IP address
(by default 192.168.1.1). If it cannot, check the Ethernet cabling.
If you statically assigned a private IP address to the computer, (not a
registered public address), verify the following:
1. Check that the gateway IP address on the computer is your public
IP address (see Current Status for instructions on viewing the IP
information.) If it is not, correct the address or configure the PC to
receive IP information automatically.
2. Verify with your ISP that the DNS server specified for the PC is
valid. Correct the address or configure the PC to receive this
information automatically.
Verify that the DNS server IP address specified on the PCs is correct
for your ISP, as discussed in the item above. If you specified that the
DNS server be assigned dynamically from a server, then verify with
your ISP that the address configured on the device is correct, then
You can use the ping utility, to test connectivity with your ISP's DNS
server.
If you have not changed the password from the default, try using
"admin" the user ID and "administrator" as password. Otherwise, you
can reset the device to the default configuration by pressing the Reset
Default button on the Rare panel of the device (see Rare Panel).
Then, type the default User ID and password shown above.
WARNING: Resetting the device removes any custom settings and
returns all settings to their default values.
Use the ping utility, discussed in the following section, to check
whether your PC can communicate with the device's LAN IP address
(by default 192.168.1.1). If it cannot, check the Ethernet cabling.
Verify that you are using Internet Explorer or Netscape Navigator v4.0 or
later.
Verify that the PC's IP address is defined as being on the same subnet
as the IP address assigned to the LAN port on the device.
Be sure to use the Confirm Changes/Apply function after any changes.
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