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Linksys WRT55AG User Manual

Instant wireless series dual-band wireless a+g broadband router
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Instant Wireless
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WRT55AG
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  • Page 1 Instant Wireless ® Series Dual-Band Wireless A+G Broadband Router Use this guide to install: WRT55AG User Guide...
  • Page 2 Connect the equipment to an outlet other than the receiver's Consult a dealer or an experienced radio/TV technician for assistance • UG-WRT55AG-30304NC KL FCC Caution: Any change or modification to the product not expressly approved by Linksys could void the user's authority to operate the device.

  • Page 3: Table Of Contents

    Note: Combinations of power levels and antennas resulting in a radiated power level of above 100 mW equivalent isotropic radiated power (EIRP) are considered as not com- pliant with the above mentioned directive and are not allowed for use within the European community and countries that have adopted the European R&TTE directive 1999/5/EC and/or the CEPT recommendation Rec 70.03.

  • Page 4: Chapter 1: Introduction

    Help Advanced Tabs Advanced Wireless Internet Filter Port Forwarding Routing DDNS Appendix A: Troubleshooting Common Problems and Solutions Frequently Asked Questions Appendix B: How to Ping Your ISP’s E-mail & Web Addresses Appendix C: Configuring Wireless Security Background WEP Encryption Appendix D: Finding the MAC Address and IP Address for Your Ethernet Adapter Appendix E: Glossary...

  • Page 5: Features

    Features • Dual-band, tri-standard Access Point communicates with Wireless-A (802.11a), Wireless-B (802.11b), and Wireless-G (draft 802.11g) wireless networks • Protect your wireless investment while preparing your infrastructure for the future • Built-in 4-port Switch jump-starts your wired network, while the Router functionality securely shares your high-speed Internet connection with wired and wireless computers •...

  • Page 6: Router Setup Overview

    DHCP (Dynamic Host Configuration Protocol) Servers PCs and other network devices using dynamic IP addressing are assigned a new IP address by a DHCP server. The PC or network device obtaining an IP address is called the DHCP client. DHCP frees you from having to assign IP addresses manually every time a new user is added to your network.

  • Page 7: Chapter 2: Getting To Know The Dual-Band Wireless A+G Broadband Router

    Chapter 2: Getting to Know the Dual-Band Wireless A+G Broadband Router The Router’s Back Panel The Router’s ports, shown in Figure 2-1, are located on the Router’s back panel. Figure 2-1 Internet The Internet port is where you connect your cable or DSL modem through an Ethernet network cable.
  • Page 8 The 802.11a WLAN Indicators Green. When the Act LED flickers, the 802.11a wireless net- work is active. Green. When the Link LED is continuously lit, the 802.11a Link wireless network is available. The 802.11b WLAN Indicators Green. When the Act LED flickers, the 802.11b wireless net- work is active.

  • Page 9: Chapter 3: Connect The Router

    Chapter 3: Connect the Router Overview Note: These directions on connecting the Router are provided only to help when you are making the connections. If you are using the Setup Wizard, make your connections only when the Wizard asks. The Router’s setup consists of more than simply plugging hardware together. You will have to configure your networked PCs to accept the IP addresses that the Router assigns them (if applicable), and you will also have to configure the Router with setting(s) provided by your Internet Service Provider (ISP).

  • Page 10: Wireless Connection To A Pc

    Wireless Connection to a PC If you want to use a wireless connection to access the Router, follow these instructions: 1. Before you begin, make sure that all of your network’s hardware is powered off, including the Router, PCs, and cable or DSL modem. 2.

  • Page 11: Configuring Windows 98 And Millennium Pcs

    Configuring Windows 98 and Millennium PCs 1. Click the Start button. Select Settings and click the Control Panel icon. Double-click the Network icon. 2. On the Configuration tab, select the TCP/IP line for the applicable Ethernet adapter. Do not choose a TCP/IP entry whose name mentions DUN, PPPoE, VPN, or AOL.

  • Page 12: Configuring Windows 2000 Pcs

    Configuring Windows 2000 PCs 1. Click the Start button. Select Settings and click the Control Panel icon. Double-click the Network and Dial-up Connections icon. 2. Select the Local Area Connection icon for the applicable Ethernet adapter (usually it is the first Local Area Connection listed). Double-click the Local Area Connection.

  • Page 13: Configuring Windows Xp Pcs

    Configuring Windows XP PCs The following instructions assume you are running Windows XP with the default interface. If you are using the Classic interface (where the icons and menus look like previous Windows versions), please follow the instructions for Windows 2000. 1.

  • Page 14: Chapter 5: Setting Up The Dual-Band Wireless A+G Broadband Router

    Chapter 5: Setting Up the Dual-Band Wireless A + G Broadband Router When you are ready to connect the Router to your network, the Router’s Setup Wizard will take you through all the steps necessary for configuration. Note: While the Router has been designed to work correctly right out of the box, setting it up on a wireless computer will require you to use the Linksys default settings.
  • Page 15 5. Now, power off your modem and disconnect your Internet connection. Then, connect the Router as shown on the screen displayed. If you have a cable connection, you will see a screen similar to that shown in Figure 5-4. If you have a DSL connection, you will see a screen similar to that shown in Figure 5-5.
  • Page 16 If you are using Windows 2000, the instructions will start as shown in Figure 5-10. If you are using Windows XP, the instructions will start as shown in Figure 5-11. If you are using Windows XP in “Classic” mode, you can see these instructions in this mode by clicking the Classic button.
  • Page 17 8. As shown in Figure 5-17, the Basic Settings screen for your 2.4GHz/54g (802.11g-draft) wireless products will appear. Enter the Network Mode, SSID, and the channel at which the network broadcasts its wireless signal. Then, click the Next button to continue. Network Mode.

  • Page 18: Chapter 6: Configure The Router's Basic Settings With The Web-Based Utility

    Chapter 6: Configuring the Router’s Basic Settings with the Web-Based Utility This chapter will show you how to configure the Router to function in your network and gain access to the Internet through your Internet Service Provider (ISP). Detailed description of the Router’s web-based utility can be found in “Chapter 7: The Router’s Web-based Utility.”...
  • Page 19 Automatic Configuration - DHCP If you are connecting through DHCP or a dynamic IP address from your ISP, perform these steps: A. Keep default setting, Automatic Configuration - DHCP, as the Configuration Type, shown in Figure 6-4. B. Click the Apply button to save the setting, or click the Cancel button to clear the setting and start over.

  • Page 20: Chapter 7: The Router's Web-Based Utility

    5. To configure the Router for your wireless network(s), perform these steps: A. To enable 5GHz, 802.11a wireless networking, make sure the 5GHz, 802.11a Enable radio button is selected. Then click the Change 5GHz Settings button, and customize the SSID, Channel, and WEP encryption settings as needed.

  • Page 21: Setup

    Note: For added security, you should always change the password through the Password screen of the web-based utility. To apply any of the settings you change on a page, click the Apply button. To cancel any changes you’ve entered on any page, click the Cancel button. To get additional information about any screen’s features, click the Help button.
  • Page 22 Static IP If you are required to use a permanent IP address to connect to the Internet, then select Static IP, as shown in Figure 7-5. Figure 7-5 Internet IP Address This is the Router’s IP address, when seen from the WAN, or the Internet.
  • Page 23 PPTP Point Point Tunneling Protocol (PPTP), selected in the screen shown in Figure 7-7, is a serv- ice that applies to con- nections in Europe only. Figure 7-7 Specify Internet IP Address This is the Router’s IP address, when seen from the Internet.
  • Page 24 5GHz, 802.11a The 5GHz, 802.11a portion of the Setup screen, shown in Figure 7-8, allows you to configure your 5GHz, 802.11a wireless network settings. Figure 7-8 Mode If you do not have any 802.11a devices in your network, you can dis- able this broadcasting by selecting Disable.
  • Page 25 Check all the values, and click the Apply button to save your 5GHz, 802.11a WEP settings. To cancel any changes you’ve entered on this page, click the Cancel button. To get more information about the features, click the Help but- ton.

  • Page 26: Security

    Passphrase Instead of manually entering WEP keys, you can enter a Passphrase. This Passphrase is used to generate one or more WEP keys. It is case-sensitive and should not be longer than 16 alphanumeric characters. This Passphrase function is compatible with Linksys wireless products only. [If you want to communicate with non-Linksys wireless products, enter the WEP key(s) manually on the non-Linksys wireless products.] After you enter the Passphrase, click the Generate button to create WEP keys.

  • Page 27: System

    Cookies - A cookie is data stored on your PC and used by Internet sites when you interact with them. To enable cookie filtering, click the Cookies box. DMZ The DMZ hosting feature allows one local user to be exposed to the Internet for use of a special-purpose service such as Internet gaming or video- conferencing.
  • Page 28 4. Double-click the firmware upgrade file you extracted. 5. Click the Upgrade button, and follow the on-screen instructions. Important: When you are upgrading the firmware, do NOT turn off the Router, and do NOT press the Reset button. Multicast Pass-Through IP Multicasting occurs when a single data transmis- sion is sent to multiple recipients at the same time.

  • Page 29: Dhcp

    DHCP The DHCP screen, shown in Figure 7-15, allows you to configure the settings for the Router’s Dynamic Host Configuration Protocol (DHCP) server function. The Router can be used as a DHCP server for your network. A DHCP server automatically assigns an IP address to each computer on your network. Figure 7-15 If you choose to enable the Router’s DHCP server option, you must configure all of your network PCs to connect to a DHCP server (the Router), and make sure...

  • Page 30: Snmp

    SNMP The SNMP tab, shown in Figure 7-17, allows you to customize the Simple Network Management Protocol (SNMP) settings. SNMP is a popular network monitoring and management protocol. Figure 7-17 The Identification settings let you designate the Contact, Device Name, and Location information for the Router.

  • Page 31: Help

    Firmware Version The version number of the firmware currently installed is displayed here. Current Time The current time, as set from the Setup tab, is displayed here. Host Name The Host Name is the name of the Router. This entry is necessary for some ISPs.

  • Page 32: Advanced Tabs

    Linksys Website Clicking this link will take you to Linksys’s website, www.linksys.com, provided you are connected to the Internet. Online User Guide in PDF Format and Adobe Website Clicking the Online User Guide in PDF format link opens the Router’s User Guide. The User Guide is in Adobe Acrobat Portable Document File (.pdf) format, so you need the Adobe Acrobat Reader to view it.
  • Page 33 Transmission Rate The rate of data transmission should be set depending on the speed of your wireless network. You can select from a range of transmission speeds (6, 9, 12, 18, 24, 36, 48, or 54Mbps), or you can select Auto to have the Router automatically use the fastest possible data rate and enable the Auto- Fallback feature.

  • Page 34: Internet Filter

    Fragmentation Threshold This value specifies the maximum size for a pack- et before data is fragmented into multiple packets. If you experience a high packet error rate, you may slightly increase the Fragmentation Threshold. Setting the Fragmentation Threshold too low may result in poor network per- formance.

  • Page 35: Port Forwarding

    3. Select if you wish to Disable or Enable Internet access for those PCs you listed on the List of PCs screen by clicking the radio button beside either option. 4. You filter access to various services accessed over the Internet, such as FTP or Telnet, by selecting a service from the...
  • Page 36 Protocol TCP Click this checkbox if you want to forward the data transmis- sions that use the TCP protocol. Protocol UDP Click this checkbox if you want to forward the data transmis- sions that use the UDP protocol. IP Address For each application, enter the IP Address of the PC running the specific application.

  • Page 37: Routing

    Routing On the Routing screen, shown in Figure 7-27, you can set the routing mode of the Router. Gateway mode is recommended for most users. Figure 7-27 Note: The Routing screen and available features will vary depending on which mode you select. To set up routing: 1.

  • Page 38: Ddns

    Show Routing Table Click the Show Routing Table button to view all of the valid dynamic and static route entries in use (see Figure 7-28). The Destination LAN IP address, Subnet Mask, Gateway, and Interface information are dis- played for each entry. Click the Refresh button to display the most up-to-date data.

  • Page 39: Appendix A: Troubleshooting

    Appendix A: Troubleshooting Common Problems and Solutions This appendix consists of two parts: “Common Problems and Solutions” and “Frequently Asked Questions.” Provided are possible solutions to problems that may occur during the installation and operation of the Router. Read the descrip- tions below to help solve your problems.
  • Page 40 For Windows XP: The following instructions assume you are running Windows XP with the default interface. If you are using the Classic interface (where the icons and menus look like previous Windows versions), please follow the instructions for Windows 2000. A.
  • Page 41 D. Make sure you have the right cable. Check to see if the Internet column has a solidly lit Link/Act LED. E. Make sure the cable connecting from your cable or DSL modem is con- nected to the Router’s Internet port. Verify that the Status page of the Router’s web-based utility shows a valid IP address from your ISP.
  • Page 42 7. I need to set up online game hosting or use other Internet applications. If you want to play online games or use Internet applications, most will work without doing any port forwarding or DMZ hosting. There may be cases when you want to host an online game or Internet application.
  • Page 43 E. Click the option Never dial a connection. This will remove any dial-up pop-ups for PPPoE users. For Netscape 4.7 or higher: A. Start Netscape Navigator, and click Edit, Preferences, Advanced, and Proxies. B. Make sure you have Direct connection to the Internet selected on this screen.

  • Page 44: Frequently Asked Questions

    If your difficulties continue, change the Size to different values. Try this list of values, one value at a time, in this order, until your problem is solved: 1462 1400 1362 1300 16. The Diag LED stays lit continuously. • The Diag LED lights up when the device is first powered up. Meantime, the system will boot up itself and check for proper operation.
  • Page 45 Does the Router support ICQ send file? Yes, with the following fix: click ICQ menu -> preference -> connections tab->, and check I am behind a firewall or proxy. Then set the firewall time- out to 80 seconds in the firewall setting. The Internet user can then send a file to a user behind the Router.
  • Page 46 If DMZ Hosting is used, does the exposed user share the public IP with the Router? Does the Router pass PPTP packets or actively route PPTP sessions? The Router allows PPTP packets to pass through, supporting up to five ses- sions.
  • Page 47 What is roaming? Roaming is the ability of a portable computer user to communicate continu- ously while moving freely throughout an area greater than that covered by a sin- gle access point. Before using the roaming function, the workstation must make sure that it is the same channel number with the access point of dedicated cov- erage area.

  • Page 48: Appendix B: How To Ping Your Isp's E-Mail & Web Addresses

    How do I reset the Router? Press the Reset button on the back panel for about ten seconds. This will reset the Router to its default settings. How do I resolve issues with signal loss? There is no way to know the exact range of your wireless network without test- ing.
  • Page 49 Step One: Pinging an IP Address The first step to determining your ISP’s web and e-mail server address is to ping its IP address. 1. Power on the computer and the cable or DSL modem, and restore the net- work configuration set by your ISP if you have since changed it. 2.

  • Page 50: Appendix C: Configuring Wireless Security

    Appendix C: Configuring Wireless Security Background The Router offers two wireless security features. The basic feature is Wired Equivalent Privacy (WEP) encryption, an encryption method used to protect your wireless data communications. WEP uses 64-bit, 128-bit, or 152-bit keys to provide access control to your network and encryption security for every data transmission.

  • Page 51: Appendix D: Finding The Mac Address And Ip Address For Your Ethernet Adapter

    Appendix D: Finding the MAC Address and IP Address for Your Ethernet Adapter This section describes how to find the MAC address for your Ethernet adapter to do either MAC address filtering or MAC address cloning for the Router and ISP.

  • Page 52: Appendix E: Glossary

    2. In the command prompt, enter ipconfig /all. Then press the Enter key. Figure D-5 3. Write down the Physical Address as shown on your computer screen; it is the MAC address for your Ethernet adapter. This will appear as a series of letters and numbers.
  • Page 53 Adapter - Printed circuit board that plugs into a PC to add to capabilities or connectivity to a PC. In a networked environment, a network interface card is the typical adapter that allows the PC or server to connect to the intranet and/or Internet.
  • Page 54 asymmetric transfer rates: around 36 Mbps downstream (from the Internet to the computer), and from 200 Kbps to 2 Mbps upstream (from the computer to the Internet). CAT 5 - ANSI/EIA (American National Standards Institute/Electronic Industries Association) Standard 568 is one of several standards that specify "categories"...
  • Page 55 code). Even if one or more bits in the chip are damaged during transmission, statistical techniques embedded in the receiver can recover the original data without the need for retransmission. To an unintended receiver, DSSS appears as low power wideband noise and is rejected (ignored) by most narrowband receivers.
  • Page 56 Unlike e-mail programs in which graphics and program files have to be "attached," FTP is designed to handle binary files directly and does not add the overhead of encoding and decoding the data. Full Duplex - The ability of a device or line to transmit data simultaneously in both directions.
  • Page 57 IPX (Internetwork Packet EXchange) - A NetWare communications protocol used to route messages from one node to another. IPX packets include network addresses and can be routed from one network to another. ISM band - The FCC and their counterparts outside of the U.S. have set aside bandwidth for unlicensed use in the ISM (Industrial, Scientific and Medical) band.
  • Page 58 Packet - A unit of data routed between an origin and a destination in a network. Passphrase - Used much like a password, a passphrase simplifies the WEP encryption process by automatically generating the WEP encryption keys for Linksys products. Ping (Packet INternet Groper) - An Internet utility used to determine whether a particular IP address is online.
  • Page 59 Software - Instructions for the computer. A series of instructions that performs a particular task is called a "program." The two major categories of software are "system software" and "application software." System software is made up of control programs such as the operating system and database management sys- tem (DBMS).

  • Page 60: Appendix F: Specifications

    VPN (Virtual Private Network) - A technique that allows two or more LANs to be extended over public communication channels by creating private commu- nication subchannels (tunnels). Effectively, these LANs can use a WAN as a single large "virtually private" LAN. This removes the need to use leased lines for WAN communications through secure use of a publicly available WAN (such as the Internet).

  • Page 61: Environmental

    Environmental Dimensions 7.32" x 1.89" x 6.89" (186 mm x 48 mm x 175 mm) Unit Weight 0.88 lbs. (0.4 kg) Power External, 5V DC, 2.5A Certifications FCC, CE Marking, Wi-Fi Operating Temp. 32ºF to 104ºF (0ºC to 40ºC) Storage Temp. -4ºF to 158ºF (-20ºC to 70ºC) Operating Humidity 10% to 85%, Non-Condensing...

  • Page 62: Appendix H: Contact Information

    Appendix H: Contact Information For help with the installation or operation of the Dual-Band Wireless A+G Broadband Router, contact Linksys Technical Support at one of the phone num- bers or Internet addresses below. Sales Information 800-546-5797 (1-800-LINKSYS) Technical Support 800-326-7114 RMA Issues 949-271-5461 949-265-6655...

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