Users Manual Part 2

Chapter 32 Troubleshooting

NBG7510 User’s Guide

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2 If you changed the IP address, you might be able to find the IP address of the Zyxel Device by looking

up the IP address of your computer’s default gateway. To do this in Microsoft Windows, 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, depending on your network environment.

I forgot the admin password.

1 See the Zyxel Device label or this document’s cover page for the default admin password.

2 If you changed the password from default and cannot remember the new one, you have to reset the

Zyxel Device to its factory default settings.

I cannot access the Web Configurator login screen.

1 Make sure you are using the correct IP address.

• The default IP address is 192.168.123.1.

• If you changed the IP address, use the new IP address.

• If you changed the IP address and have forgotten the new address, see the troubleshooting

suggestions for I do not know the IP address of the Zyxel Device.

2 Check the hardware connections, and make sure the LEDs are behaving as expected.

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

enabled.

4 If it is possible to log in from another interface, check the service control settings for HTTP and HTTPS

(Maintenance > Remote Management).

5 Reset the Zyxel Device to its factory default, and try to access the Zyxel Device with the default IP

address.

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

suggestions.

Advanced Suggestions

• Make sure you have logged out of any earlier management sessions using the same user account

even if they were through a different interface or using a different browser.

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

Device, check the remote management settings and firewall rules to find out why the Zyxel Device

does not respond to HTTP.

I cannot log into the Zyxel Device.