ZyXEL Communications MES3500 Series, User Manual

Page: 346 / 370

Chapter 47 Troubleshooting
MES3500 Series User’s Guide
346
• 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
3.2 on page 33 .
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 4.6 on page 41 .
6
If the problem continues, contact the vendor, or try one of the advanced suggestions.
Advanced Suggestions
• 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.
I can see the Login screen, but I cannot log in to the Switch.
1
Make sure you have entered the user name and password correctly. The default user name is
admin , and the default password is 1234 . These fields are case-sensitive, so make sure [Caps
Lock] is not on.
2
You may have exceeded the maximum number of concurrent Telnet sessions. Close other Telnet
session(s) or try connecting again later.
Check that you have enabled logins for HTTP or Telnet. If you have configured a secured client IP
address, your computer’s IP address must match it. Refer to the chapter on access control for
details.
3
Disconnect and re-connect the cord to the Switch.
4
If this does not work, you have to reset the device to its factory defaults. See Section 4.6 on page
41 .
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).