ZyXEL Communications NXC8160 User Manual

 Chapter 10 Troubleshooting

NXC-8160 User’s Guide

• If you disconnect your computer from one device and connect it to another device that has 

the same IP address, your computer’s ARP (Address Resolution Protocol) table may 
contain an entry that maps the management IP address to the previous device’s MAC 
address. 
In Windows, use arp -d at the command prompt to delete all entries in your computer’s 
ARP table.

V

I can see the Login screen, but I cannot log in to the NXC-8160.

1 Make sure you have entered the user name and password correctly. The default user 

name is admin, and the default password is Switch1. These fields are case-sensitive, so 
make sure [Caps Lock] is not on. 

2 Disconnect and re-connect the power cord to the NXC-8160. 
3 If this does not work, you have to contact your vendor. 

V

I cannot Telnet to the NXC-8160.

You cannot use Telnet to access the NXC-8160. The NXC-8160 supports SSH (Secure SHell) 
and allows a secure encrypted connection for support purposes only.

V

I cannot access the NXC-8160 or ping any computer from the WLAN.

1 Make sure the wireless adapter on the wireless client is working properly.
2 Make sure the wireless adapter (installed on your computer) is IEEE 802.11 compatible 

and supports the same wireless standard as the NXC-8160.

3 Make sure your computer (with a wireless adapter installed) is within the transmission 

range of the AP(s) connected to the NXC-8160.

4 Check that both the NXC-8160 and your wireless client are using the same wireless and 

wireless security settings.

5 Make sure you didn’t enable VLAN on the NXC-8160’s LAN IP address and the SSID 

to which the wireless station is connecting.

V

I cannot access the Internet wirelessly through the NXC-8160.