ZyXEL G-302 v3 User Guide - Page 55

ZyXEL G-302 v3 User’s Guide

Chapter 5 Troubleshooting

51

C

HAPTER

5

Troubleshooting

This chapter covers potential problems and the possible remedies. After each problem

description, some instructions are provided to help you to diagnose and to solve the problem.

5.1

Problems Starting the ZyXEL Utility

5.2

Problem with the Link Quality

Table 15

Troubleshooting Starting ZyXEL Utility

PROBLEM

CORRECTIVE ACTION

Cannot start the

ZyXEL wireless

LAN utility

Make sure the G-302 v3 is properly inserted and the LED is on.

Use the

Device Manager

to check for possible hardware conflicts. Click

Start

,

Settings

,

Control Panel

,

System

,

Hardware

and

Device Manager

. Verify the

status of the G-302 v3 under

Network Adapter

. (Steps may vary depending on the

version of Windows).

Install the G-302 v3 in another computer.

If you are using Windows Vista, make sure WLAN Autoconfig is running. To do this

see

Section 5.4 on page 52

.

If the error persists, you may have a hardware problem. In this case, you should

contact your local vendor.

The ZyXEL utility

icon does not

display.

If you install the Funk Odyssey Client software on the computer, uninstall (remove)

both the Funk Odyssey Client software and ZyXEL utility, and then install the

ZyXEL utility again after restarting the computer.

Table 16

Troubleshooting Link Quality

PROBLEM

CORRECTIVE ACTION

The link quality

and/or signal

strength is poor all

the time.

Search and connect to another AP with a better link quality using the

Site Survey

screen.

Move your computer closer to the AP or the peer computer(s) within the

transmission range.

There may be too much radio interference (for example microwave or another AP

using the same channel) around your wireless network. Relocate or reduce the

radio interference.

Section	Page
User’s Guide	1
Preface	3
Safety Warnings	5
Copyright	7
Certifications	8
ZyXEL Limited Warranty	10
Customer Support	11
Table of Contents	17
List of Figures	21
List of Tables	23
Getting Started	25
1.1 About Your G-302 v3	25
1.1.1 Windows Vista Users	25
1.1.2 Application Overview	25
1.1.2.1 Infrastructure	26
1.1.2.2 Ad-Hoc	26
1.2 G-302 v3 Hardware and Utility Installation	27
1.3 Configuration Methods	27
1.4 Windows XP Users Only	27
1.5 Accessing the ZyXEL Utility	28
1.6 ZyXEL Utility Screen Summary	29
1.7 Connecting to a Wireless LAN	29
1.7.1 Site Survey	29
Wireless LAN Network	33
2.1 Wireless LAN Overview	33
2.1.1 SSID	33
2.1.2 Channel	33
2.1.3 Transmission Rate	33
2.2 Wireless LAN Security Overview	33
2.2.1 Data Encryption with WEP	34
2.2.2 IEEE 802.1x	34
2.2.2.1 EAP Authentication	34
2.2.3 WPA and WPA2	35
2.2.3.1 Encryption	35
2.2.3.2 User Authentication	35
2.2.4 WPA(2)-PSK Application Example	35
2.2.5 WPA(2) with RADIUS Application Example	36
2.3 Authentication Type	37
2.4 Preamble Type	37
ZyXEL Utility Configuration	39
3.1 The Link Info Screen	39
3.1.1 Trend Chart	40
3.2 The Site Survey Screen	41
3.2.1 Connecting to a WLAN Network	42
3.2.2 Security Settings	42
3.2.2.1 WEP Encryption	43
3.2.2.2 WPA/WPA2	44
3.2.2.3 WPA-PSK/WPA2-PSK	45
3.2.3 Confirm Save Screen	46
3.3 The Profile Screen	46
3.3.1 Adding a New Profile	48
3.4 The Adapter Screen	52
Maintenance	53
4.1 The About Screen	53
4.2 Uninstalling the ZyXEL Utility	53
4.3 Upgrading the ZyXEL Utility	54
Troubleshooting	55
5.1 Problems Starting the ZyXEL Utility	55
5.2 Problem with the Link Quality	55
5.3 Problems Communicating With Other Computers	56
5.4 Windows Vista Users - How To Start WLAN AutoConfig	56
Product Specifications	59
Management with Wireless Zero Configuration	61
Activating Wireless Zero Configuration	61
Connecting to a Wireless Network	62
Security Settings	65
Association	66
Authentication	67
Ordering the Preferred Networks	70
Wireless Security	73
Types of EAP Authentication	73
EAP-MD5 (Message-Digest Algorithm 5)	73
EAP-TLS (Transport Layer Security)	73
EAP-TTLS (Tunneled Transport Layer Service)	74
PEAP (Protected EAP)	74
LEAP	74
Dynamic WEP Key Exchange	74
WPA(2)	75
Encryption	75
User Authentication	76
WPA(2)-PSK Application Example	76
WPA(2) with RADIUS Application Example	77
Security Parameters Summary	78
Index	79
A	79
C	79
D	79
E	79
F	79
G	79
H	79
I	79
L	79
M	79
N	80
O	80
P	80
Q	80
R	80
S	80
T	80
U	80
V	80
W	80

ZyXEL G-302 v3 User Guide - Page 55

Troubleshooting

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