ZyXEL nbg-5715 Mode D'Emploi

 Chapter 23 Troubleshooting

NBG5715 User’s Guide

Make sure you are using the correct IP address.

• The default IP address is 

192.168.1.1

.

• If you changed the IP address (

), 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 

Make sure your computer is in the same subnet as the NBG5715. (If you know that there are 
routers between your computer and the NBG5715, skip this step.)

• If there is a DHCP server on your network, make sure your computer is using a dynamic IP 

address. See 

. 

• If there is no DHCP server on your network, make sure your computer’s IP address is in the 

same subnet as the NBG5715. See 

Reset the device to its factory defaults, and try to access the NBG5715 with the default IP address. 
See 

.

If the problem continues, contact the network administrator or vendor, or try one of the advanced 
suggestions.

• Try to access the NBG5715 using another service, such as Telnet. If you can access the 

NBG5715, check the remote management settings and firewall rules to find out why the 
NBG5715 does not respond to HTTP.

• If your computer is connected to the WAN port or is connected wirelessly, use a computer that is 

connected to a LAN/ETHERNET port.

I can see the Login screen, but I cannot log in to the NBG5715.

Make sure you have entered the password correctly. The default password is 1234. This field is 
case-sensitive, so make sure [Caps Lock] is not on. 

You cannot log in to the Web Configurator while someone is using Telnet to access the NBG5715. 
Log out of the NBG5715 in the other session, or ask the person who is logged in to log out. 

This can happen when you fail to log out properly from your last session. Try logging in again after 
5 minutes.

Disconnect and re-connect the power adaptor or cord to the NBG5715. 

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

.