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Chapter 81 Troubleshooting
XGS2220 Series User’s Guide
691
4 If the Switch is removed from a site in Nebula, all the settings in the configuration file are reset to the
Nebula factory defaults except for the IP address. If you changed the default dynamic IP address to a
static IP address while the Switch was in a site in Nebula, the Switch will retain that static IP address after
you remove it from the site in Nebula.
5 If this does not work, you have to reset the device to its factory defaults. See Section 4.9 on page 98.
I cannot see or access the Login screen in the Web Configurator.
1 Make sure you are using the correct IP address.
• If you changed the IP address, use the new IP address.
• The default in-band IP address in standalone mode is http://DHCP-assigned IP (when connecting
to a DHCP server) or 192.168.1.1.
The default in-band IP address in stacking mode is 192.168.1.1.
• If you changed the IP address and have forgotten it, see the troubleshooting suggestions for I forgot
the IP address for the Switch.
2 Check the hardware connections, and make sure the LEDs are behaving as expected. See Section 3.3
on page 54.
3 Make sure your Internet browser does not block pop-up windows and has JavaScripts and Java
enabled.
4 Make sure your computer is in the same subnet as the Switch. (If you know that there are routers
between your computer and the Switch, skip this step.)
5 Reset the device to its factory defaults, and try to access the Switch with the default IP address. See
Section 4.8 on page 97.
6 If the problem continues, contact Zyxel technical support, or try the advanced suggestion.
Advanced Suggestion
• Try to access the Switch using another service, such as Telnet. If you can access the Switch, check the
remote management settings to find out why the Switch does not respond to HTTP.
Pop-up Windows, JavaScripts and Java Permissions
In order to use the Web Configurator you need to allow:
• Web browser pop-up windows from your device.
• JavaScripts (enabled by default).
• Java permissions (enabled by default).
There is unauthorized access to my Switch through telnet, HTTP and SSH.
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