ZyXEL P-660HN-51 User Guide - Page 235
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Chapter 23 Troubleshooting • If you changed the IP address (Section 7.2 on page 91), use the new IP address. • If you changed the IP address and have forgotten it, see the troubleshooting suggestions for I forgot the IP address for the ZyXEL Device. 2 Check the hardware connections, and make sure the LEDs are behaving as expected. See the Quick Start Guide. 3 Make sure your Internet browser does not block pop-up windows and has JavaScripts and Java enabled. See Appendix C on page 281. 4 Reset the device to its factory defaults, and try to access the ZyXEL Device with the default IP address. See Section 1.7 on page 26. 5 If the problem continues, contact the network administrator or vendor, or try one of the advanced suggestions. Advanced Suggestions • 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. • If your computer is connected to the WAN port or is connected wirelessly, use a computer that is connected to a ETHERNET port. I can see the Login screen, but I cannot log in to the ZyXEL Device. 1 Make sure you have entered the password correctly. The default admin password is 1234. The field is case-sensitive, so make sure [Caps Lock] is not on. 2 You cannot log in to the web configurator while someone is using Telnet to access the ZyXEL Device. Log out of the ZyXEL Device in the other session, or ask the person who is logged in to log out. 3 Turn the ZyXEL Device off and on. 4 If this does not work, you have to reset the device to its factory defaults. See Section 23.1 on page 233. I cannot Telnet to the ZyXEL Device. See the troubleshooting suggestions for I cannot see or access the Login screen in the web configurator. Ignore the suggestions about your browser. P-660HN-TxA User's Guide 235