ZyXEL Communications NWD2705 User Manual Download Page 57

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NWD2705 User’s Guide

H A P T E R

Troubleshooting

This chapter offers some suggestions to solve problems you might encounter. The potential
problems are divided into the following categories.

•

Power, Hardware Connections, and LEDs

•

Accessing the ZyXEL Utility

•

Link Quality

•

Problems Communicating with Other Computers

6.1 Power, Hardware Connections, and LEDs

The NWD2705 does not turn on. None of the LEDs turn on.

Make sure the NWD2705 is correctly installed (refer to your Quick Start Guide).

Restart the computer to which the NWD2705 is attached.

If the problem continues, contact the vendor.

One of the LEDs does not behave as expected.

Make sure you understand the normal behavior of the LED. See

Section 1.2 on page 12

Check the hardware connection. See the Quick Start Guide and

Section 1.2 on page 12

Restart the computer to which the NWD2705 is attached.

If the problem continues, contact the vendor.

Summary of Contents for NWD2705

Page 2: ... to differences in your product firmware or your computer operating system Every effort has been made to ensure that the information in this manual is accurate Related Documentation Quick Start Guide The Quick Start Guide shows how to connect the NWD2705 and set up your network Online Help Embedded web help for descriptions of individual screens and supplementary information ...

Page 3: ...verview NWD2705 User s Guide 3 Contents Overview Introduction and Configuration 9 Getting Started 11 Tutorial 16 Wireless LANs 25 ZyXEL Utility Station Mode 35 Maintenance 51 Troubleshooting 55 Troubleshooting 57 ...

Page 4: ...Contents Overview NWD2705 User s Guide 4 ...

Page 5: ... Icon 13 1 5 Configuration Methods 14 1 5 1 Enabling Windows Wireless Configuration 14 1 5 2 Accessing the ZyXEL Utility 15 Chapter 2 Tutorial 16 2 1 Overview 16 2 1 1 What You Can Do in This Tutorial 16 2 1 2 What You Need to Know 16 2 1 3 Before You Begin 16 2 2 Connecting to an AP using Wi Fi Protected Setup WPS 17 2 2 1 Push Button Configuration PBC 17 2 2 2 PIN Configuration 18 2 3 Connecting...

Page 6: ...3 Before You Begin 36 4 2 ZyXEL Utility Screen Summary 36 4 3 The Link Info Screen 37 4 3 1 Trend Chart 38 4 4 The Site Survey Screen 39 4 4 1 Security Settings 40 4 4 2 Summary Screen 43 4 5 The Profile Screen 43 4 5 1 Adding a New Profile 45 4 6 The Adapter Screen 48 4 6 1 WPS PBC Push Button Configuration 49 4 6 2 WPS PIN Use this Device s PIN 49 4 6 3 WPS PIN Use the PIN from the AP or Wireles...

Page 7: ...r s Guide 7 Chapter 6 Troubleshooting 57 6 1 Power Hardware Connections and LEDs 57 6 2 Accessing the ZyXEL Utility 58 6 3 Link Quality 58 6 4 Problems Communicating with Other Computers 58 Appendix A Legal Information 61 Index 65 ...

Page 8: ...Table of Contents NWD2705 User s Guide 8 ...

Page 9: ...9 PART I Introduction and Configuration ...

Page 10: ...10 ...

Page 11: ...tion Methods on page 14 1 1 1 What You Need to Know The following terms and concepts may help as you read through this section and subsequently as you read through the rest of the User s Guide Access Point An Access Point AP is a network device that acts as a bridge between a wired and a wireless network Outside of the home or office APs can most often be found in coffee shops bookstores and other...

Page 12: ... detailed information 1 2 1 Hardware This section describes the NWD2705 s physical appearance Figure 1 The NWD2705 The following table describes the NWD2705 The following table describes the operation of the NWD2705 s LED Table 1 NWD2705 External View LABEL DESCRIPTION A WPS button B LED Table 2 NWD2705 LED COLOR STATUS DESCRIPTION Blue On The NWD2705 is turned on and the driver is installed Slow ...

Page 13: ... Through the AP you can access the Internet or the wired network behind the AP Figure 2 Application Infrastructure 1 4 Hardware and Utility Installation Follow the instructions in the Quick Start Guide to install the ZyXEL utility and make hardware connections 1 4 1 ZyXEL Utility Icon After you install and start the ZyXEL utility an icon for the ZyXEL utility appears in the system tray Note The Zy...

Page 14: ...me you use the ZyXEL utility 1 5 1 Enabling Windows Wireless Configuration Note When you use the ZyXEL utility it automatically disables Windows XP s wireless configuration tool If you want to use the Windows XP wireless configuration tool to configure the NWD2705 you need to disable the ZyXEL utility Right click the utility icon in the system tray and select Exit Figure 4 Enable WZC Refer to the ...

Page 15: ...k on the ZyXEL wireless LAN utility icon in the system tray to open the ZyXEL utility The ZyXEL utility screens are similar in all Microsoft Windows versions Screens for Windows XP are shown in this User s Guide Note Click the icon located in the top right corner to display the online help window ...

Page 16: ...that you can later connect again to an infrastructure AP with a single click See Section 2 3 2 on page 22 for details 2 1 2 What You Need to Know The following term may help as you read through this section WPS Wi Fi Protected Setup WPS is a security protocol that lets two or more devices connect securely to one another with a minimum amount of hassle on your part It most cases establishing a secu...

Page 17: ...n 2 2 2 on page 18 This is the more secure method since one device can authenticate the other 2 2 1 Push Button Configuration PBC 1 Make sure that your access point is turned on and that it is within range of the computer with the NWD2705 installed 2 Make sure that you have installed the NWD2705 s driver and utility on your computer 3 In the NWD2705 s utility click the Adapter tab enable WPS and s...

Page 18: ...N Use this device s PIN Note down the PIN in the screen that appears 2 Enter the PIN number in the AP s configuration interface In the NBG4615 v2 use the PIN field in the Network Wireless LAN WPS Station screen 3 Click the Start buttons on both the NWD2705 utility screen and the AP s configuration utility the WPS Station screen on the NBG4615 v2 within two minutes The NBG4615 v2 authenticates the ...

Page 19: ...ows you the example of configuring the wireless network and security on the NWD2705 and the AP ZyXEL s NBG4615 v2 in this example by using the PIN method Figure 7 Example WPS Process PIN Method Authentication by PIN SECURITY INFO WITHIN 2 MINUTES COMMUNICATION You AP ...

Page 20: ...now its Service Set IDentity SSID and WPA PSK pre shared key In this example the AP s SSID is SSID_Example3 and its pre shared key is ThisismyWPA PSKpre sharedkey After you install the ZyXEL utility and then insert the wireless client follow the steps below to connect to a network using the Site Survey screen 1 Open the ZyXEL utility and click the Site Survey tab to open the screen shown next Figu...

Page 21: ...mary window appears Check your settings and click Save to continue Figure 10 ZyXEL Utility Summary 6 The ZyXEL utility returns to the Link Info screen while it connects to the wireless network using your settings When the wireless link is established the ZyXEL utility icon in the system tray turns green and the Link Info screen displays details of the active connection Check the network informatio...

Page 22: ...example illustrates how to set up a profile and connect the wireless client to an access point configured for WPA PSK security In this example the AP s SSID is SSID_Example3 and its pre shared key is ThisismyWPA PSKpre sharedkey You have chosen the profile name PN_Example3 1 Open the ZyXEL utility and click the Profile tab to open the screen as shown Click Add to configure a new profile Figure 12 ...

Page 23: ...hared key and leave the encryption type at the default setting Figure 15 ZyXEL Utility Profile Encryption 6 Verify the profile settings in the ready only screen Click Save to save and go to the next screen Figure 16 ZyXEL Utility Profile Summary 7 Click Activate Now to use the new profile immediately Otherwise click the Activate Later button to go back to the Profile List screen If you clicked Act...

Page 24: ...displays details of the active connection 9 Make sure the selected AP in the active profile is on and connected to the Internet Open your Internet browser enter http www zyxel com or the URL of any other web site in the address bar and press ENTER If you are able to access the web site your new profile is successfully configured 10 If you cannot access the Internet go back to the Profile screen Se...

Page 25: ... form a network the one that distributes data to the other devices is known as the server A RADIUS Remote Authentication Dial In User Service is a kind of server that manages logins and logout among other things for the network to which it is connected Client When two or more devices are connected digitally to form a network the one that contacts and obtains data from a server is known as the clie...

Page 26: ...wireless network It stands for Service Set IDentity If two wireless networks overlap they should use a different channel Like radio stations or television channels each wireless network uses a specific channel or frequency to send and receive information Every device in the same wireless network must use security compatible with the AP or peer computer Security stops unauthorized devices from usin...

Page 27: ...uter do not share a secret key Thus the wireless stations can associate with any AP or peer computer and listen to any transmitted data that is not encrypted Shared mode involves a shared secret key to authenticate the wireless station to the AP or peer computer This requires you to enable the wireless LAN security and use same settings on both the wireless station and the AP or peer computer Auto...

Page 28: ...ce to authenticate the other in each of the two devices When WPS is activated on a device it has two minutes to find another device that also has WPS activated Then the two devices connect and set up a secure network by themselves 3 4 1 Push Button Configuration WPS Push Button Configuration PBC is initiated by pressing a button on each WPS enabled device and allowing them to connect automatically...

Page 29: ...ps to set up a WPS connection between an access point or wireless router referred to here as the AP and a client device using the PIN method 1 Ensure WPS is enabled on both devices 2 Access the WPS section of the AP s configuration interface See the device s User s Guide for how to do this 3 Look for the client s WPS PIN it will be displayed either on the device or in the WPS section of the client...

Page 30: ...ce acts as the enrollee the device that receives network and security settings The registrar creates a secure EAP Extensible Authentication Protocol tunnel and sends the network name SSID and the WPA PSK or WPA2 PSK pre shared key to the enrollee Whether WPA PSK or WPA2 PSK is used depends on the standards supported by the devices If the registrar is already part of a network it sends the existing...

Page 31: ...at it is not part of an existing network and can act as either enrollee or registrar if it supports both functions If the registrar is unconfigured the security settings it transmits to the enrollee are randomly generated Once a WPS enabled device has connected to another device using WPS it becomes configured A configured wireless client can still act as enrollee or registrar in subsequent WPS co...

Page 32: ... You know that Client 1 supports registrar mode but it is better to use AP1 for the WPS handshake with the new client since you must connect to the access point anyway in order to use the network In this case AP1 must be the registrar since it is configured it already has security information for the network AP1 supplies the existing security information to Client 2 Figure 22 WPS Example Network S...

Page 33: ... and the first enrollee for example then check that it successfully enrolled then set up the second device in the same way WPS works only with other WPS enabled devices However you can still add non WPS devices to a network you already set up using WPS WPS works by automatically issuing a randomly generated WPA PSK or WPA2 PSK pre shared key from the registrar device to the enrollee devices see Se...

Page 34: ...f this has happened WPS works between only two devices simultaneously so if another device has enrolled your device will be unable to enroll and will not have access to the network If this happens open the access point s configuration interface and look at the list of associated clients usually displayed by MAC address It does not matter if the access point is the WPS registrar the enrollee or was...

Page 35: ... concepts may help as you read through this section Wired Equivalent Privacy WEP WEP Wired Equivalent Privacy encrypts data transmitted between wired and wireless networks to keep the transmission private Although one of the original wireless encryption protocols WEP is also the weakest Many people use it strictly to deter unintentional usage of their wireless network by outsiders Wi Fi Protected ...

Page 36: ...he Quick Start Guide for more 4 2 ZyXEL Utility Screen Summary This section describes the ZyXEL utility screens Figure 24 ZyXEL Utility Menu Summary The following table describes the menus Table 4 ZyXEL Utility Menu Summary TAB DESCRIPTION Link Info Use this screen to see your current connection status configuration and data rate statistics Site Survey Use this screen to scan for a wireless networ...

Page 37: ...ansmission Speed This field displays the current transmission link speed of the NWD2705 in megabits per second Mbps Channel This field displays the radio channel the NWD2705 is currently using Receive Speed This field displays the current receiving speed of the NWD2705 in megabits per second Mbps Security This field displays whether data encryption is activated WEP WPA PSK WPA2 PSK or inactive DIS...

Page 38: ...trength of the signal The signal strength mainly depends on the antenna output power and the distance between your NWD2705 and the AP or peer computer Link Quality The status bar shows the quality of wireless connection This refers to the percentage of packets transmitted successfully If there are too many wireless stations in a wireless network collisions may occur which could result in a loss of...

Page 39: ...ignal This field displays the signal strength of each wireless device Channel This field displays the channel number used by each wireless device Scan Click Scan to search for available wireless devices within transmission range Connect Click Connect to associate to the selected wireless device Site Information Click an entry in the Available Network List table to display the information of the se...

Page 40: ...n Choose the security of the network you are attempting to join Figure 28 Security Setting Selection The following table describes the labels in this screen Table 8 Security Setting WEP LABEL DESCRIPTION Security Type Select the security type that matches the security setting of the network you re trying to join The options are DISABLE WEP WPA PSK and WPA2 PSK Back Click Back to go to the Site Sur...

Page 41: ... and 4 Select this option if you want to manually enter the WEP keys Enter the WEP key in the field provided If you select 64 bits in the WEP field Enter either 10 hexadecimal digits in the range of A F a f and 0 9 for example 11AA22BB33 for HEX key type or Enter 5 ASCII characters case sensitive ranging from a z A Z and 0 9 for example MyKey for ASCII key type If you select 128 bits in the WEP fi...

Page 42: ...A PSK WPA2 PSK uses a simple common password instead of user specific credentials Select the encryption type TKIP or AES for data encryption Refer to Section 3 3 2 on page 27 for more information Pre Shared Key Type a pre shared key same as the AP or peer device of between 8 and 63 case sensitive ASCII characters including spaces and symbols or 64 hexadecimal characters Back Click Back to go to th...

Page 43: ...NWD2705 uses the default profile to connect to any available network that has no security enabled The default profile is a profile that allows you to connect to any SSID that has no security enabled Click the Profile tab in the ZyXEL utility program to display the Profile screen as shown next Table 11 Summary Screen LABEL DESCRIPTION Network Name SSID This field displays the SSID previously entere...

Page 44: ...activate a previously saved network profile select a pre configured profile name in the table and click Connect Add To add a new profile into the table click Add Delete To delete an existing wireless network configuration select a profile in the table and click Delete Edit To edit an existing wireless network configuration select a profile in the table and click Edit Profile Info The following fie...

Page 45: ...ween any infrastructure wireless networks Network Type Select Infrastructure to associate to an AP Next Click Next to go to the next screen Exit Click Exit to go back to the previous screen without saving Scan Info This table displays the information of the available wireless networks within the transmission range or denotes that the wireless device is in infrastructure mode and the wireless secur...

Page 46: ...ther peer wireless computers without any data encryption and skip to step 5 Figure 34 Profile Wireless Settings 3 The screen varies depending on the encryption method you select in the previous screen The settings must be exactly the same on the AP or other peer wireless computers as they are on the NWD2705 Refer to Section 4 4 1 on page 40 for detailed information on wireless security configurati...

Page 47: ...o return to the previous screen Otherwise click Exit to go back to the Profile screen without saving Figure 36 Profile Confirm New Settings 5 To use this network profile click the Activate Now button Otherwise click the Activate Later button You can activate only one profile at a time Note Once you activate a profile the ZyXEL utility will use that profile the next time it is started Figure 37 Pro...

Page 48: ...C Push Button Configuration Select this to use the PBC Push Button Configuration WPS mode When you use the PBC mode you do not use a PIN When you select this the PBC Push Button Configuration screen appears see Section 4 6 1 on page 49 PIN Use This Device s PIN Select this to use the PIN Personal Identification Number WPS mode Use this option when you want to enter the NWD2705 s PIN in another WPS...

Page 49: ...Push Button Configuration Press Start when you want to begin the WPS process You must also press the button on the other device within two minutes 4 6 2 WPS PIN Use this Device s PIN This screen allows you to use the WPS Personal Identification Number mode by entering the NWD2705 s unique PIN in the configuration utility of the other WPS enabled device See Section 3 4 2 on page 29 for more informa...

Page 50: ...ibes the labels in this screen Table 15 WPS PIN Use this Device s PIN LABEL DESCRIPTION This device s PIN This is the NWD2705 s Personal Identification Number PIN This field is read only Enter the number that displays in this field into the configuration interface of the other WPS enabled device Note Each time this screen displays the PIN is different The PIN is valid for only one WPS transaction ...

Page 51: ... Section 5 4 on page 53 for details 5 1 2 What You Need to Know The following term may help as you read through this section Device driver A system file that lets other programs interact with a piece of hardware or device You should never try to locate and install or uninstall device drivers yourself since they are modifications to an operating system at the core or kernel level Doing so could irr...

Page 52: ...move or uninstall the ZyXEL utility from your computer Note Before you uninstall the ZyXEL utility take note of your current wireless configurations 1 Click Start All Programs ZyXEL Dual Band Wireless N450 USB Adapter ZyXEL Dual Band Wireless N450 USB Adapter 2 When prompted click OK or Yes to remove the driver and the utility software Figure 43 Uninstall Confirm Table 17 About LABEL DESCRIPTION D...

Page 53: ...ownload the latest version of the utility from the ZyXEL web site and save the file on your computer 2 Follow the steps in Section 5 3 on page 52 to remove the current ZyXEL utility from your computer 3 Restart your computer when prompted 4 Disconnect the NWD2705 from your computer 5 Double click on the setup program for the new utility to start the ZyXEL utility installation 6 Insert the NWD2705 ...

Page 54: ...Chapter 5 Maintenance NWD2705 User s Guide 54 ...

Page 55: ...55 PART II Troubleshooting ...

Page 56: ...56 ...

Page 57: ... The NWD2705 does not turn on None of the LEDs turn on 1 Make sure the NWD2705 is correctly installed refer to your Quick Start Guide 2 Restart the computer to which the NWD2705 is attached 3 If the problem continues contact the vendor One of the LEDs does not behave as expected 1 Make sure you understand the normal behavior of the LED See Section 1 2 on page 12 2 Check the hardware connection See...

Page 58: ...r 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 t...

Page 59: ...ide 59 Make sure that the computer and the AP share the same security option and key Verify the settings in the Profile Security Setting screen If you are using WPA 2 PSK security try changing your encryption type from TKIP to AES or vice versa ...

Page 60: ...Chapter 6 Troubleshooting NWD2705 User s Guide 60 ...

Page 61: ...nce and 2 this device must accept any interference including interference that may cause undesired operation of the device Cet appareil numérique de la classe B est conforme à la norme NMB 003 du Canada Viewing Certifications Go to http www zyxel com to view this product s documentation and certifications ZyXEL Limited Warranty ZyXEL warrants to the original end user purchaser that this product is...

Page 62: ...ench Par la présente ZyXEL déclare que l appareil équipements est conforme aux exigences essentielles et aux autres dispositions pertinentes de la directive 1999 5 EC Italian Con la presente ZyXEL dichiara che questo attrezzatura è conforme ai requisiti essenziali ed alle altre disposizioni pertinenti stabilite dalla direttiva 1999 5 CE Latvian Ar šo ZyXEL deklarē ka iekārtas atbilst Direktīvas 19...

Page 63: ...re notifiées à l Institut Belge des services Postaux et des Télécommunications IBPT Visitez http www ibpt be pour de plus amples détails Denmark In Denmark the band 5150 5350 MHz is also allowed for outdoor usage I Danmark må frekvensbåndet 5150 5350 også anvendes udendørs France For 2 4 GHz the output power is restricted to 10 mW EIRP when the product is used outdoors in the band 2454 2483 5 MHz ...

Page 64: ...ice during a thunderstorm There is a remote risk of electric shock from lightning Connect ONLY suitable accessories to the device Ground yourself by properly using an anti static wrist strap for example whenever working with the device s hardware or connections ONLY qualified service personnel should service or disassemble this device Antenna Warning This device meets ETSI and FCC certification re...

Page 65: ...hentication 27 automatic connection 39 automatic network scan 20 43 C CCMP 27 certifications 61 notices 61 viewing 61 channel 26 37 39 configuration method 14 important note 14 Wireless Zero Configuration WZC 14 ZyXEL utility 14 configuration status 37 connection status 37 copyright 61 creating a new profile 45 current configuration 37 current connection status 37 D data encryption 39 disclaimer 6...

Page 66: ... 27 41 password 27 product registration 62 Profile 43 profile 37 44 activation 47 add new 45 configure 20 22 default 43 delete 44 edit 44 information 44 new 44 45 PSK 27 Q Quick Start Guide 2 13 58 R radio interference 58 real time data traffic statistics 38 receive rate 37 receive speed 37 registration product 62 related documentation 2 S scan 39 scan info 45 search 39 security 26 27 37 data encr...

Page 67: ...cryption 41 WEP key generation 27 Wi Fi Protected Access 27 Wi Fi Protected Setup 36 Windows XP 14 wireless client 26 wireless LAN introduction 25 security 26 wireless LAN WLAN 25 wireless network 26 Wireless station mode profile 43 wireless station mode adapter 48 security settings 40 site survey 39 trend chart 38 wireless tutorial 17 WPA 27 vs WPA PSK 27 WPA2 27 vs WPA2 PSK 27 WPA2 PSK 27 42 WPA...

Page 68: ...Index NWD2705 User s Guide 68 ...

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