ZyXEL ZyAIR G-470 User Manual download pdf (Page 77)

G-470 User’s Guide

Chapter 8 Troubleshooting 77

8.5 Problems with the Ethernet Interface

Table 22 Troubleshooting the Ethernet Interface

PROBLEM CORRECTIVE ACTION

I cannot access the

ZyXEL Device from

the LAN.

If the ETHN LED on the front panel is off, check the Ethernet cable connection

between your ZyXEL Device and the Ethernet device connected to the

ETHERNET port.

Check for faulty Ethernet cables.

Make sure your computer’s Ethernet adapter is installed and working properly.

Check the IP address of the Ethernet device. Verify that the IP address and the

subnet mask of the ZyXEL Device, the Ethernet device and your computer are

on the same subnet.

I cannot ping any

computer on the

LAN.

If the ETHN LED on the front panel is off, check the Ethernet cable connections

between your ZyXEL Device and the Ethernet device.

Check the Ethernet cable connections between the Ethernet device and the

LAN computers.

Check for faulty Ethernet cables.

Make sure the LAN computer’s Ethernet adapter is installed and working

properly.

Verify that the IP address and the subnet mask of the ZyXEL Device, the

Ethernet device and the LAN computers are on the same subnet.

I cannot access the

web configurator.

Your computer’s and the ZyXEL Device’s IP addresses must be on the same

subnet for LAN access.

If you changed the ZyXEL Device’s IP address, then enter the new one as the

URL.

If you don’t know the ZyXEL Device’s IP address, type the device name of your

ZyXEL Device 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 ZyXEL Device’s IP address, your computer’s cache of

machine names may contain an entry that maps the name of the ZyXEL Device

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.

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ZyXEL ZyAIR G-470 User Manual Page 77

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