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Chapter 12 Troubleshooting 5 If the problem continues, contact your ISP. I cannot access the Internet anymore. I had access to the Internet (with the NWA1121-NI), but my Internet connection is not available anymore. 1 Check the hardware connections, and make sure the LEDs are behaving as expected. See the Quick Start Guide and Section 1.7 on page 17. 2 Reboot the NWA1121-NI. 3 If the problem continues, contact your ISP or network administrator. The Internet connection is slow or intermittent. 1 There might be a lot of traffic on the network. Look at the LEDs, and check Section 1.7 on page 17. If the NWA1121-NI is sending or receiving a lot of information, try closing some programs that use the Internet, especially peer-to-peer applications. 2 Check the signal strength. If the signal is weak, try moving the NWA1121-NI (in wireless client mode) closer to the AP (if possible), and look around to see if there are any devices that might be interfering with the wireless network (microwaves, other wireless networks, and so on). 3 Reboot the NWA1121-NI. 4 If the problem continues, contact the network administrator or vendor, or try one of the advanced suggestions. Advanced Suggestions • Check the settings for QoS. If it is disabled, you might consider activating it. 130 NWA1121-NI User's Guide

Section	Page
NWA1121-NI	1
Contents Overview	3
Table of Contents	5
User’s Guide	9
Introducing the NWA1121-NI	11
1.1 Introducing the NWA1121-NI	11
1.2 Wireless Modes	11
1.2.1 MBSSID	11
1.2.2 Wireless Client	13
1.2.3 Root AP	14
1.2.4 Repeater	14
1.3 Ways to Manage the NWA1121-NI	15
1.4 Configuring Your NWA1121-NI’s Security Features	16
1.4.1 Control Access to Your Device	16
1.4.2 Wireless Security	16
1.5 Good Habits for Managing the NWA1121-NI	16
1.6 Hardware Connections	17
1.7 LED	17
Introducing the Web Configurator	19
2.1 Accessing the Web Configurator	19
2.2 Resetting the NWA1121-NI	20
2.2.1 Methods of Restoring Factory-Defaults	21
2.3 Navigating the Web Configurator	22
2.3.1 Title Bar	22
2.3.2 Navigation Panel	23
2.3.3 Main Window	24
Dashboard	25
3.1 The Dashboard Screen	25
Tutorial	29
4.1 How to Configure the Wireless LAN	29
4.1.1 Choosing the Wireless Mode	29
4.1.2 Further Reading	29
4.2 How to Configure Multiple Wireless Networks	29
4.2.1 Configure the SSID Profiles	31
4.2.2 Configure the Standard Network	33
4.2.3 Configure the VoIP Network	34
4.2.4 Configure the Guest Network	36
4.2.5 Testing the Wireless Networks	38
4.3 NWA1121-NI Setup in AP and Wireless Client Modes	38
4.3.1 Scenario	38
4.3.2 Configuring the NWA1121-NI in MBSSID or Root AP Mode	39
4.3.3 Configuring the NWA1121-NI in Wireless Client Mode	42
4.3.4 MAC Filter Setup	44
4.3.5 Testing the Connection and Troubleshooting	45
Technical Reference	47
Monitor	49
5.1 Overview	49
5.2 What You Can Do	49
5.3 View Logs	49
5.4 Statistics	50
5.5 Association List	51
5.6 Channel Usage	52
Wireless LAN	55
6.1 Overview	55
6.2 What You Can Do in this Chapter	55
6.3 What You Need To Know	56
6.4 Wireless Settings Screen	60
6.4.1 Root AP Mode	61
6.4.2 Repeater Mode	64
6.4.3 Wireless Client Mode	67
6.4.4 MBSSID Mode	69
6.5 SSID Screen	72
6.5.1 Configuring SSID	73
6.6 Wireless Security Screen	74
6.6.1 Security: WEP	76
6.6.2 Security: 802.1x Only	77
6.6.3 Security: 802.1x Static WEP	79
6.6.4 Security: WPA, WPA2, WPA2-MIX	83
6.6.5 Security: WPA-PSK, WPA2-PSK, WPA2-PSK-MIX	86
6.7 RADIUS Screen	87
6.8 MAC Filter Screen	89
6.9 Technical Reference	91
6.9.1 Additional Wireless Terms	91
6.9.2 WMM QoS	92
6.9.3 Security Mode Guideline	93
LAN	94
7.1 Overview	94
7.2 What You Can Do in this Chapter	94
7.3 What You Need to Know	94
7.4 LAN IP Screen	96
VLAN	98
8.1 Overview	98
8.1.1 What You Can Do in This Chapter	98
8.2 What You Need to Know	98
8.3 VLAN Screen	99
System	101
9.1 Overview	101
9.2 What You Can Do in this Chapter	101
9.3 What You Need To Know	102
9.4 WWW Screen	104
9.5 Certificates Screen	105
9.6 Telnet Screen	106
9.7 SNMP Screen	107
9.8 FTP Screen	110
9.9 Technical Reference	111
9.9.1 MIB	111
9.9.2 Supported MIBs	112
9.9.3 Private-Public Certificates	112
9.9.4 Certification Authorities	112
9.9.5 Checking the Fingerprint of a Certificate on Your Computer	112
Log Settings	115
10.1 Overview	115
10.2 What You Can Do in this Chapter	115
10.3 What You Need To Know	116
10.4 Log Settings Screen	116
Maintenance	119
11.1 Overview	119
11.2 What You Can Do in this Chapter	119
11.3 What You Need To Know	120
11.4 General Screen	120
11.5 Password Screen	121
11.6 Time Screen	122
11.7 Firmware Upgrade Screen	123
11.8 Configuration File Screen	124
11.8.1 Backup Configuration	124
11.8.2 Restore Configuration	124
11.8.3 Back to Factory Defaults	125
11.9 Restart Screen	125
Troubleshooting	127
12.1 Power, Hardware Connections, and LEDs	127
12.2 NWA1121-NI Access and Login	128
12.3 Internet Access	129
Setting Up Your Computer’s IP Address	131
Pop-up Windows, JavaScript and Java Permissions	159
IP Addresses and Subnetting	171
Wireless LANs	179
Legal Information	193

Match case Limit results 1 per page

Chapter 12 Troubleshooting

NWA1121-NI User’s Guide

130

If the problem continues, contact your ISP.

I cannot access the Internet anymore. I had access to the Internet (with the NWA1121-NI),

but my Internet connection is not available anymore.

Check the hardware connections, and make sure the LEDs are behaving as expected. See the Quick

Start Guide and

Section 1.7 on page 17

Reboot the NWA1121-NI.

If the problem continues, contact your ISP or network administrator.

The Internet connection is slow or intermittent.

There might be a lot of traffic on the network. Look at the LEDs, and check

Section 1.7 on page 17

If the NWA1121-NI is sending or receiving a lot of information, try closing some programs that use

the Internet, especially peer-to-peer applications.

Check the signal strength. If the signal is weak, try moving the NWA1121-NI (in wireless client

mode) closer to the AP (if possible), and look around to see if there are any devices that might be

interfering with the wireless network (microwaves, other wireless networks, and so on).

Reboot the NWA1121-NI.

If the problem continues, contact the network administrator or vendor, or try one of the advanced

suggestions.

Advanced Suggestions

•

Check the settings for QoS. If it is disabled, you might consider activating it.