ZyXEL Communications P-661HNU-Fx User Manual

Chapter 26 Troubleshooting

ADSL Series User’s Guide

Turn the ZyXEL Device off and on. 

If the problem continues, contact the vendor.

I forgot the IP address for the ZyXEL Device.

The default IP address is 192.168.1.1.

If you changed the IP address and have forgotten it, you might get the IP address of the ZyXEL 
Device by looking up the IP address of the default gateway for your computer. To do this in most 
Windows computers, click Start > Run, enter cmd, and then enter ipconfig. The IP address of the 
Default Gateway might be the IP address of the ZyXEL Device (it depends on the network), so 
enter this IP address in your Internet browser. 

If this does not work, you have to reset the device to its factory defaults. See 

.

I forgot the password.

The default admin and user password is 1234.

If this does not work, you have to reset the device to its factory defaults. See 

.

I cannot see or access the Login screen in the web configurator.

Make sure you are using the correct IP address.

• The default IP address is 192.168.1.1.
• If you changed the IP address - see

, use the new IP address.

• If you changed the IP address and have forgotten it, see the troubleshooting suggestions for 

Check the hardware connections, and make sure the LEDs are behaving as expected. See the Quick 
Start Guide.

Make sure your Internet browser does not block pop-up windows and has JavaScript and Java 
enabled. See 

.