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ZyXEL N220 User Guide - Page 92

Accessing the ZyXEL Utility, 7.3 Link Quality - how to install a wireless adapter

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Chapter 7 Troubleshooting 7.2 Accessing the ZyXEL Utility I cannot access the ZyXEL Utility 1 Make sure the N220 is properly inserted and the LEDs are on. Refer to the Quick Start Guide for information on how to properly connect the N220. 2 Use the Device Manager to check for possible hardware conflicts. Click Start > Settings > Control Panel > System > Hardware > Device Manager. Verify the status of the N220 under Network Adapter (steps may vary depending on the version of Windows). 3 Install the N220 on another computer. 4 If the error persists, you may have a hardware problem. In this case, you should contact your vendor. 7.3 Link Quality The link quality and/or signal strength is poor. 1 Scan for and connect to another AP with a better link quality using the Site Survey screen. 2 Move your computer closer to the AP or the peer computer(s) within the transmission range. 3 There may be too much radio interference (for example from a microwave oven, or another AP using the same channel) around your wireless network. Lower the output power of each AP. 4 Make sure there are not too many wireless stations connected to a wireless network. 92 N220 User's Guide

Section	Page
N220	1
About This User's Guide	3
Document Conventions	5
Safety Warnings	7
Contents Overview	9
Table of Contents	11
Introduction and Configuration	15
Getting Started	17
1.1 Overview	17
1.1.1 What You Need to Know	17
1.1.2 Before You Begin	18
1.2 About Your N220	18
1.2.1 Hardware	18
1.3 Application Overview	19
1.3.1 Infrastructure	19
1.3.2 Ad-Hoc	20
1.4 Hardware and Utility Installation	20
1.4.1 ZyXEL Utility Icon	20
1.5 Configuration Methods	21
1.5.1 Enabling Windows Wireless Configuration	21
1.5.2 Accessing the ZyXEL Utility	21
Tutorial	23
2.1 Overview	23
2.1.1 What You Can Do in This Tutorial	23
2.1.2 What You Need to Know	23
2.1.3 Before You Begin	24
2.2 Connecting to an AP using Wi-Fi Protected Setup (WPS)	24
2.2.1 Push Button Configuration (PBC)	24
2.2.2 PIN Configuration	25
2.3 Connecting to an AP Without Using WPS	29
2.3.1 Manually Connecting to a Wireless LAN	29
2.3.2 Creating and Using a Profile	31
2.4 Configuring the N220 as an AP	34
Wireless LANs	37
3.1 Overview	37
3.1.1 What You Can Do in This Section	37
3.1.2 What You Need to Know	37
3.1.3 Before You Begin	38
3.2 Wireless LAN Overview	38
3.3 Wireless LAN Security	39
3.3.1 User Authentication and Encryption	39
3.4 WiFi Protected Setup	41
3.4.1 Push Button Configuration	42
3.4.2 PIN Configuration	42
3.4.3 How WPS Works	44
3.4.4 Limitations of WPS	47
Station Mode	49
4.1 Overview	49
4.1.1 What You Can Do in This Section	49
4.1.2 What You Need to Know	49
4.1.3 Before You Begin	50
4.2 ZyXEL Utility Screen Summary	50
4.3 The Link Info Screen	51
4.3.1 Trend Chart	53
4.4 The Site Survey Screen	54
4.4.1 Security Settings	55
4.4.2 Summary Screen	61
4.5 The Profile Screen	62
4.5.1 Adding a New Profile	63
4.6 The Adapter Screen	68
4.6.1 WPS: PBC (Push Button Configuration)	69
4.6.2 WPS: PIN - Use this Device’s PIN	69
4.6.3 WPS: PIN - Use the PIN from the AP or Wireless Router	70
4.7 Security Settings in Windows Vista	71
4.7.1 Using PEAP in Vista	72
4.7.2 Using TLS in Vista	73
AP Mode	75
5.1 Overview	75
5.1.1 What You Can Do in This Section	76
5.1.2 What You Need to Know	76
5.1.3 Before You Begin	76
5.2 AP Mode Screen Summary	77
5.3 The Link Info Screen	77
5.4 The Configuration Screen	78
5.4.1 Security Settings	80
5.5 The MAC Filter Screen	82
Maintenance	85
6.1 Overview	85
6.1.1 What You Can Do in This Section	85
6.1.2 What You Need to Know	85
6.1.3 Before You Begin	85
6.2 The About Screen	86
6.3 Uninstalling the ZyXEL Utility	86
6.4 Upgrading the ZyXEL Utility	87
Troubleshooting and Specifications	89
Troubleshooting	91
7.1 Power, Hardware Connections, and LEDs	91
7.2 Accessing the ZyXEL Utility	92
7.3 Link Quality	92
7.4 Problems Communicating with Other Computers	93
Product Specifications	95
Appendices and Index	99
Setting Up Your Computer’s IP Address	101
Wireless LANs	131
Windows Wireless Management	147
Wireless for Windows 7	173
Legal Information	179