ZyXEL Communications G-570S User Manual

ZyXEL G-570S User’s Guide

Chapter 8 Troubleshooting

105

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).

Note: Internet Explorer 6 screens are used here. Screens for other Internet Explorer 

versions may vary.

You may have to disable pop-up blocking to log into your device. 

Either disable pop-up blocking (enabled by default in Windows XP SP (Service Pack) 2) or 
allow pop-up blocking and create an exception for your device’s IP address.

Cannot access the 

web configurator.

Your computer’s and the G-570S’s IP addresses must be on the same subnet 

for LAN access.
If you changed the G-570S’s IP address, then enter the new one as the URL.
If you don’t know the G-570S’s IP address, type the device name of your G-

570S as the URL. ZyXELXXXX is the default where “XXXX” is the last four digits 

of the MAC address. The MAC address is on the bottom of the device). 
If you just changed the G-570S’s IP address, your computer’s cache of machine 

names may contain an entry that maps the name of the G-570S to its previous 

IP address. 
In Windows, use nbtstat -R at the command prompt to delete all entries in your 

computer’s cache of machine names.
Open a new browser window.
See the following section to check that pop-up windows, JavaScripts and Java 

permissions are allowed.

You may also need to clear your Internet browser’s cache.
In Internet Explorer, click Tools and then Internet Options to open the Internet 

Options screen. 
In the General tab, click Delete Files. In the pop-up window, select the Delete 

all offline content check box and click OK. Click OK in the Internet Options 

screen to close it.
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.
Open a new browser window.

Table 31   Troubleshooting the Ethernet Interface (continued)