ZyXEL Communications Plumbing Product metrogigabit switch User Manual

Chapter 46 Troubleshooting

MGS3700-12C User’s Guide

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).

I cannot see some of Advanced Application submenus at the bottom of the 
navigation panel.

The recommended screen resolution is 1024 by 768 pixels. Adjust the value in your computer 
and then you should see the rest of Advanced Application submenus at the bottom of the 
navigation panel.

There is unauthorized access to my Switch via telnet, HTTP and SSH.

Click the Display button in the System Log field in the Management > Diagnostic screen to 
check for unauthorized access to your Switch. To avoid unauthorized access, configure the 
secured client setting in the Management > Access Control > Remote Management screen 
for telnet, HTTP and SSH (see 

). Computers not belonging to the 

secured client set cannot get permission to access the Switch.

I lost my configuration settings after I restart the Switch.

Make sure you save your configuration into the 
Switch’s nonvolatile memory each time you make 
changes. Click Save at the top right corner of the 
web configurator to save the configuration permanently. See also 

 for more information about how to save your configuration.