The Compact All-In-One Wireless-G Networking Solution
wired-Ethernet devices together. Connect four PCs directly, or attach more hubs and switches to create as big a network as you need. Finally, the Router function ties it all together and lets your whole network share a high-speed cable or DSL Internet connection. Once your computers are connected to the Router and the Internet, they can communicate with each other too, sharing a printer, digital music, picture and document files, and multiplayer or on-line games. To protect your data and privacy, the Wireless-G Broadband Router can encode all wireless transmissions with WEP or high security WPA Personal encryption. The Router can serve as a DHCP Server, has a powerful SPI firewall to protect your PCs against intruders and most known Internet attacks, and supports VPN pass-through. Configuration is a snap with the web browser-based configuration utility. And the tiny form factor fits any home or desktop. With the Linksys Compact Wireless-G Broadband Router at the center of your home or office network, you can share a high-speed Internet connection, files, printers, and multi-player games with the flexibility, speed, and security you need! Compact form factor fits in anywhere High security: Wi-Fi Protected Access (WPA/ WPA2 Personal), wireless MAC address filtering, powerful SPI firewall
The Linksys Compact Wireless-G Broadband Router is really three devices in one small box. First, there's the Wireless Access Point, which lets you connect both screaming fast Wireless-G (802.11g at 54Mbps) and Wireless-B (802.11b at 11Mbps) devices to the network. There's also a built-in 4port full-duplex 10/100 Switch to connect your All-in-one Internetsharing Router, 4-port Switch, and WirelessG (802.11g) Access Point Shares a single Internet connection and other resources with Ethernet wired and Wireless-G and B devices

Compact

Wireless-G

Wireless

Broadband Router

Product Data

Model No.

WRT54GC

Features Complies with 802.11g and 802.11b (2.4GHz) Standards Unsurpassed Wireless Security with Wi-Fi Protected Access (WPA/WPA2 Personal) Compact travel size router with built-in antenna All LAN Ports Support AutoCrossover (MDI/MDI-X) - No Need for Crossover Cables Connect an optional external antenna to increase reception and range (external antenna not included)
Cabling Type LEDs Security features Wireless Security Environmental Dimensions WxHxD Unit Weight Power Certifications Operating Temp. Storage Temp. Operating Humidity Storage Humidity Warranty 3.86" x 3.86" x 0.98" (98 mm x 98 mm x 25 mm) 4.97 oz. (0.141 kg) External 3.3V DC, 2.0A FCC, IC-03, CE, Wi-Fi (802.11b, 802.11g), WPA 32F to 104F (0C to 40C) -4F to 158F (-20C to 70C) 20% to 80% Non-Condensing 10% to 90% Non-Condensing 3-Years Limited Specifications Model Number Standards Channels Ports/Buttons WRT54GC IEEE 802.3, IEEE 802.3u, IEEE 802.11g, IEEE 802.11b 11 Channels (US, Canada) 13 Channels (Europe) Internet: One 10/100 RJ-45 Port LAN: Four 10/100 RJ-45 Switched Ports One Power Port, One SMA Port, One Reset Button UTP CAT 5 Power, Internet, Wireless, Ethernet (1, 2, 3, 4) Stateful Packet Inspection (SPI) Firewall, Internet Policy Wi-Fi Protected Access (WPA/WPA2 Personal), WEP , Wireless MAC Filtering

Linksys A Division of Cisco Systems, Inc. 18582 Teller Avenue Irvine, CA 92612 USA E-mail: Web: sales@linksys.com support@linksys.com http://www.linksys.com

Minimum Requirements

200 MHz or Faster Processor 64 MB of RAM Internet Explorer 4.0 or Netscape Navigator 4.7 or Higher for Web-based configuration CD-ROM Drive Windows 98SE, Me, 2000, or XP Network Adapter

Package Contents

Compact Wireless-G Broadband Router Setup CD-ROM with Symantec Internet Security User Guide on CD-ROM Power Adapter Ethernet Network Cable
Linksys products are available in more than 50 countries, supported by 12 Linksys Regional Offices throughout the world. For a complete list of local Linksys Sales and Technical Support contacts, visit our Worldwide Web Site at www.linksys.com.
Specifications are subject to change without notice. Linksys is a registered trademark or trademark of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries. Copyright 2005 Cisco Systems, Inc. All rights reserved. Other brands and product names are trademarks or registered trademarks of their respective holders.

WRT54GC-DS-50223NC-BW

Model No. Model No.

Instant Wireless Series

Wireless-G Broadband Router
Use this guide to install: WRT54G

User Guide

COPYRIGHT & TRADEMARKS Specifications are subject to change without notice. Copyright 2002 Linksys, All Rights Reserved. Instant Wireless, Linksys, and the Linksys logo are registered trademarks of Linksys Group, Inc. Microsoft, Windows, and the Windows logo are registered trademarks of Microsoft Corporation. All other trademarks and brand names are the property of their respective proprietors. LIMITED WARRANTY Linksys guarantees that every Instant Wireless Wireless-G Broadband Router will be free from physical defects in material and workmanship for one year from the date of purchase, when used within the limits set forth in the Specifications section of this User Guide. If the product proves defective during this warranty period, go to the Linksys website at www.linksys.com for complete RMA (Return Merchandise Authorization) assistance. You can also call Linksys Technical Support in order to obtain a RMA Number. BE SURE TO HAVE YOUR PROOF OF PURCHASE AND A BARCODE FROM THE PRODUCTS PACKAGING ON HAND WHEN CALLING. RETURN REQUESTS CANNOT BE PROCESSED WITHOUT PROOF OF PURCHASE. When returning a product, mark the RMA Number clearly on the outside of the package and include a copy of your original proof of purchase. All customers located outside of the United States of America and Canada shall be held responsible for shipping and handling charges. IN NO EVENT SHALL LINKSYS'S LIABILITY EXCEED THE PRICE PAID FOR THE PRODUCT FROM DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OF THE PRODUCT, ITS ACCOMPANYING SOFTWARE, OR ITS DOCUMENTATION. LINKSYS OFFERS NO REFUNDS FOR ITS PRODUCTS. Linksys makes no warranty or representation, expressed, implied, or statutory, with respect to its products or the contents or use of this documentation and all accompanying software, and specifically disclaims its quality, performance, merchantability, or fitness for any particular purpose. Linksys reserves the right to revise or update its products, software, or documentation without obligation to notify any individual or entity. Please direct all inquiries to: Linksys P.O. Box 18558, Irvine, CA 92623. SAFETY AND REGULATORY NOTICES FCC STATEMENT The Instant Wireless Wireless-G Broadband Router has been tested and found to comply with the specifications for a Class B digital device, pursuant to Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used according to the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which is found by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
FCC Caution: Any change or modification to the product not expressly approved by Linksys could void the user's authority to operate the device. FCC RF Radiation Exposure Statement To comply with the FCC and ANSI C95.1 RF exposure limits, the antenna(s) for this device must comply with the following: Access points with 2.4 GHz integrated antenna must operate with a separation distance of at least 20 cm from all persons using the cable provided and must not be co-located or operating in conjunction with any other antenna or transmitter. End-users must be provided with specific operations for satisfying RF exposure compliance. Note: Dual antennas used for diversity operation are not considered co-located. Canadian Department of Communications Industry Canada (IC) Notice This Class B digital apparatus complies with Canadian ICES-003 and RSS-210. Cet appareil numrique de la classe B est conforme la norme NMB-003 et CNR-210 du Canada. "To prevent radio interference to the licensed service, this device is intended to be operated indoors and away from windows to provide maximum shielding. Equipment (or its transmit antenna) that is installed outdoors is subject to licensing." " Pour empcher que cet appareil cause du brouillage au service faisant l'objet d'une licence, il doit tre utilis l'intrieur et devrait tre plac loin des fentres afin de fournir un cran de blindage maximal. Si le matriel (ou son antenne d'mission) est install l'extrieur, il doit faire l'objet d'une licence. " EC DECLARATION OF CONFORMITY (EUROPE) Linksys Group declares that the Instant Wireless Series products included in the Instant Wireless Series conform to the specifications listed below, following the provisions of the European R&TTE directive 1999/5/EC, EMC directive 89/336/EEC, and Low Voltage directive 73/23/EEC: For 11Mbps, 2.4 GHz access points with 100 mW radios, the following standards were applied: EMC: EN 301 489-1, EN 301.89-17 Safety: EN 60950 Radio: ETS 300-328-2 Technical requirements for Radio equipment. Caution: This equipment is intended to be used in all EU and EFTA countries. Outdoor use may be restricted to certain frequencies and/or may require a license for operation. Contact local Authority for procedure to follow. 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 compliant 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. For more details on legal combinations of power levels and antennas, contact Linksys Corporate Compliance.

Chapter 2: Getting to Know the Wireless-G Broadband Router

The Routers Back Panel

Figure 2-1 The Routers ports are located on the Routers back panel. Figure 2-2 Internet The Internet port is where you connect your cable or DSL modem through an Ethernet network cable. Your modem connection will not work from any other port. These four LAN (Local Area Network) ports connect to network devices, such as PCs, print servers, and network attached storage (NAS). Each of the ports will auto-detect whether a straight-through or crossover cable is plugged into it, so there is no need for an uplink port. Any one of the four ports can serve as an uplink port to other network devices. The Power port is where you will connect the power adapter. The Routers LEDs display information about the Routers status. Power DMZ Green. This LED lights up when the Router is powered on. Green. The DMZ LED lights up when the DMZ hosting feature is being used. Red. The Diag LED lights up when the Router goes through its self-diagnosis mode during every boot-up. It will turn off upon successful completion of the diagnosis. If this LED stays on for one minute or longer, see Appendix A: Troubleshooting.

Ports 1-4

The WLAN Indicators Act Green. When the Act LED flickers, the wireless network is active. Green. When the Link LED is continuously lit, the wireless network is available.
The Internet Indicators Link/Act Green. The Link/Act LED lights up when a successful connection is made between the Router and your cable or DSL modem (the Internet). The Link/Act LED flickers when the Router is sending or receiving data over the Internet port. Green. The Full/Col LED serves two purposes. If this LED is lit up solidly, the connection made through the corresponding port is running in full duplex mode. If the LED flickers, the connection is experiencing collisions (when two PCs send data at the same time). Infrequent collisions are normal. Orange. The 100 LED lights up when a successful 100Mbps connection is made through the corresponding port. If this LED does not light up, then your connection speed is 10Mbps.

Full/Col The LAN Indicators Link/Act Green. The Link/Act LED serves two purposes. If the LED is continuously lit, the Router is successfully connected to a device through the corresponding port. If the LED is flickering, the Router is actively sending or receiving data over that port. Green. The Full/Col LED also serves two purposes. If this LED is lit up solidly, the connection made through the corresponding port is running in full duplex mode. If the LED flickers, the connection is experiencing collisions (when two PCs send data at the same time). Infrequent collisions are normal. Orange. The 100 LED lights up when a successful 100Mbps connection is made through the corresponding port. If this LED does not light up, then your connection speed is 10Mbps.

Full/Col

Proceed to Chapter 3: Connect the Router.
3. Connect a different Ethernet network cable from your cable or DSL modem to the Internet port on the Routers rear panel. This is the only port that will work for your modem connection.
Chapter 3: Connect the Router
Overview The Routers 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). The installation technician from your ISP should have left the setup information for your modem with you after installing your broadband connection. If not, you can call your ISP to request that data. Once you have the setup information you need for your specific type of Internet connection, you can begin installation and setup of the Router. If you want to use a PC with an Ethernet adapter to configure the Router, go to Wired Connection to a PC. If you want to use a PC with a wireless adapter to configure the Router, go to Wireless Connection to a PC and Boot-Up. Wired Connection to a PC 1. Before you begin, make sure that all of your networks hardware is powered off, including the Router, PCs, and cable or DSL modem. 2. Connect one end of an Ethernet network cable to one of the LAN ports (labeled 1-4) on the back of the Router, and the other end to an Ethernet port on a PC.
Figure 3-2 4. Power on the cable or DSL modem. 5. Connect the power adapter to the Routers Power port, and then plug the power adapter into a power outlet. Note: You should always plug the Routers power adapter into a power strip with surge protection. Figure 3-3 The Power LED on the front panel will light up green as soon as the power adapter is connected properly. The Diag LED will light up red for a few seconds. It will turn off when the self-test is complete. If this LED stays on for one minute or longer, see Appendix A: Troubleshooting. 6. Power on one of your PCs.

Figure 3-1

Figure 3-4

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. If the word TCP/IP appears by itself, select that line. Click the Properties button.
3. Click the IP Address tab. Select Obtain an IP address automatically.
Figure 4-2 4. Now click the Gateway tab, and verify that the Installed Gateway field is blank. Click the OK button. 5. Click the OK button again. Windows may ask you for the original Windows installation disk or additional files. Check for the files at c:\windows\options\cabs, or insert your Windows CD-ROM into your CDROM drive and check the correct file location, e.g., D:\win98, D:\win9x, etc. (if D is the letter of your CD-ROM drive). 6. Windows may ask you to restart your PC. Click the Yes button. If Windows does not ask you to restart, restart your computer anyway.

Figure 4-1

Go to Chapter 5: Configure the Routers Basic Settings.
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. Click the Properties button.
3. Make sure the box next to Internet Protocol (TCP/IP) is checked. Highlight Internet Protocol (TCP/IP), and click the Properties button.
Figure 4-4 4. Select Obtain an IP address automatically. Once the new window appears, click the OK button. Click the OK button again to complete the PC configuration.

Figure 4-3

Figure 4-5 5. Restart your computer.
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. Click the Start button and then the Control Panel icon. Click the Network and Internet Connections icon. Then click the Network 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. Click the Properties button.
Figure 4-7 4. Select Obtain an IP address automatically. Once the new window appears, click the OK button. Click the OK button again to complete the PC configuration.

Chapter 6: The Routers Web-based Utility
Overview Use the Routers web-based utility to administer it. This chapter will describe each web page in the Utility and each pages key functions. The utility can be accessed via your web browser through use of a computer connected to the Router. The Setup, Security, System, DHCP, Status, and Help screens are available for basic setup. For advanced setup, click the Advanced tab to access these screens: Advanced Wireless, Filters, Port Forwarding, Routing, and DDNS. How to Access the Web-based Utility To access the web-based utility, launch Internet Explorer or Netscape Navigator, and enter the Routers default IP address, 192.168.1.1, in the Address field. Then press Enter.
Figure 6-1 A password request page, shown in Figure 6-2 will pop up. (Windows XP users will see a similar screen.) Leave the User Name field blank, and enter admin (the default password) in the Password field. Then click the OK button.
Figure 5-7 If you need more details or advanced setting information, please refer to Chapter 6: The Routers Web-based Utility or the Linksys support website at support.linksys.com. Congratulations! Youve successfully configured the Router. If you are unable to reach our website, you may want to review what you did in this section or refer to Appendix A: Troubleshooting.
Proceed to Chapter 6: The Routers Web-based Utility for more details and advanced settings information.

Figure 6-2

Note: For added security, you should always change the password through the Security screen of the web-based utility. To save your changes on any page, click the Apply button. To cancel any unsaved changes on any page, click the Cancel button. To get additional information about any screens features, click the Help button. Setup The Setup screen is the first screen you see when you access the web-based utility. If you have already installed and set up the Router, you have already seen this screen and properly configured all of the screens values. Firmware Version This shows the version and date of the firmware you are using. Future versions of the Routers firmware will be posted and available for download on the Linksys website at www.linksys.com. Time Zone Select the time zone for your location. If your location experiences daylight savings, leave the checkmark in the box next to Automatically adjust clock for daylight saving changes.

Channel Select the appropriate channel from the list provided to correspond with your network settings, between 1 and 11 (in North America). All devices in your wireless network must use the same channel in order to function correctly. WEP An acronym for Wired Equivalent Privacy, WEP is an encryption method used to protect your wireless data communications. WEP uses 64-bit or 128-bit keys to provide access control to your network and encryption security for every data transmission. To decode data transmissions, all devicesWireless-G and 802.11b-in a network must use an identical WEP key. Higher encryption levels offer higher levels of security, but due to the complexity of the encryption, they may decrease network performance. To enable WEP encryption, click the Enable radio button. Then click the Edit WEP Settings button to configure the WEP settings. To disable WEP encryption, keep the default setting, Disable. To save your changes on this page, click the Apply button. To cancel any unsaved changes on this page, click the Cancel button. To get more information about the features, click the Help button.
MAC Address The MAC Address of the LAN interface is displayed here. IP Address and LAN Subnet Mask The values for the Routers IP Address and Subnet Mask are shown here. The default values are 192.168.1.1 for the IP Address and 255.255.255.0 for the Subnet Mask.
Wireless 2.4GHz, 54g, Wireless-G
MAC Address The MAC Address of the wireless interface is displayed here. Mode If you have Wireless-G and 802.11b devices in your network, then keep the default setting, Mixed. If you have only Wireless-G devices, select G-Only. If you want to disable wireless networking, select Disable. SSID The SSID is the network name shared among all devices in a wireless network. The SSID must be identical for all devices in the wireless network. It is case-sensitive and must not exceed 32 alphanumeric characters, which may be any keyboard character. Make sure this setting is the same for all devices in your wireless network. For added security, Linksys recommends that you change the default SSID (linksys) to a unique name of your choice. SSID Broadcast When wireless clients survey the local area for wireless networks to associate with, they will detect the SSID broadcast by the Router. To broadcast the Router's SSID, keep the default setting, Enable. If you do not want to broadcast the Router's SSID, then select Disable.
2.4GHz, 54g, Wireless-G (WEP)
The 2.4GHz, 54g, Wireless-G (WEP) screen allows you to configure your WEP settings. WEP encryption should always be enabled to increase the security of your wireless network.

B. Open a command prompt. For Windows 98 and Me, please click Start and Run. In the Open field, type in command. Press the Enter key or click the OK button. For Windows NT, 2000, and XP, please click Start and Run. In the Open field, type cmd. Press the Enter key or click the OK button. C. In the command prompt, type ping 192.168.1.1 and press the Enter key. If you get a reply, the computer is communicating with the Router. If you do NOT get a reply, please check the cable, and make sure Obtain an IP address automatically is selected in the TCP/IP settings for your Ethernet adapter. D. In the command prompt, type ping followed by your Internet or WAN IP address and press the Enter key. The Internet or WAN IP Address can be found on the Status screen of the Routers web-based utility. For example, if your Internet or WAN IP address is 1.2.3.4, you would enter ping 1.2.3.4 and press the Enter key. If you get a reply, the computer is connected to the Router. If you do NOT get a reply, try the ping command from a different computer to verify that your original computer is not the cause of the problem. E. In the command prompt, type ping www.yahoo.com and press the Enter key. If you get a reply, the computer is connected to the Internet. If you cannot open a webpage, try the ping command from a different computer to verify that your original computer is not the cause of the problem. If you do NOT get a reply, there may be a problem with the connection. Try the ping command from a different computer to verify that your original computer is not the cause of the problem. 3. I am not getting an IP address on the Internet with my Internet connection. A. Refer to Problem #2, I want to test my Internet connection to verify that you have connectivity. B. If you need to register the MAC address of your Ethernet adapter with your ISP, please see Appendix D: Finding the MAC address and IP Address for Your Ethernet Adapter. If you need to clone the MAC address of your Ethernet adapter onto the Router, see the System section of Chapter 6: The Routers Web-based Utility for details. C. Make sure you are using the right Internet connection settings. Contact your ISP to see if your Internet connection type is DHCP, Static IP Address, or PPPoE (commonly used by DSL consumers). Please refer to the Setup section of Chapter 6: The Routers Web-based Utility for details on Internet connection settings.

15. I cant access my e-mail, web, or VPN, or I am getting corrupted data from the Internet. The Maximum Transmission Unit (MTU) setting may need to be adjusted. By default, the MTU is set at 1500. For most DSL users, it is strongly recommended to use MTU 1492. If you are having some difficulties, perform the following steps: A. To connect to the Router, go to the web browser, and enter http://192.168.1.1 or the IP address of the Router. B. Enter the password, if asked. (The default password is admin.) C. Click the System tab. D. Look for the MTU option, and select Manual. In the Size field, enter 1492. E. Click the Apply button to continue. 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: 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. After finishing the checking procedure, the LED turns off to show that the system is working fine. If the LED remains lit after this time, the device is not working properly. Try to flash the firmware by assigning a static IP address to the computer, and then upgrade the firmware. Try using the following settings, IP Address: 192.168.1.50 and Subnet Mask: 255.255.255.0. 17. When I enter a URL or IP address, I get a time-out error or am prompted to retry. Check if other PCs work. If they do, ensure that your workstations IP settings are correct (IP Address, Subnet Mask, Default Gateway, and DNS). Restart the computer that is having a problem. If the PCs are configured correctly, but still not working, check the Router. Ensure that it is connected and powered on. Connect to it and check its settings. (If you cannot connect to it, check the LAN and power connections.) If the Router is configured correctly, check your Internet connection (DSL/cable modem, etc.) to see if it is working correctly. You can remove the Router to verify a direct connection.
Manually configure the TCP/IP settings with a DNS address provided by your ISP. Make sure that your browser is set to connect directly and that any dialup is disabled. For Internet Explorer, click Tools, Internet Options, and then the Connection tab. Make sure that Internet Explorer is set to Never dial a connection. For Netscape Navigator, click Edit, Preferences, Advanced, and Proxy. Make sure that Netscape Navigator is set to Direct connection to the Internet. 18. The Full/Col LED keeps flickering continuously. Check the Category 5 Ethernet network cable and its RJ-45 connectors. There may be interference with other network devices. Try removing other PCs or network devices to see if the problem persists. Eliminate each network device one at a time to determine the cause. Frequently Asked Questions What is the maximum number of IP addresses that the Router will support? The Router will support up to 253 IP addresses. Is IPSec Pass-Through supported by the Router? Yes, it is a built-in feature that the Router automatically enables. Where is the Router installed on the network? In a typical environment, the Router is installed between the cable/DSL modem and the LAN. Plug the Router into the cable/DSL modems Ethernet port. Does the Router support IPX or AppleTalk? No. TCP/IP is the only protocol standard for the Internet and has become the global standard for communications. IPX, a NetWare communications protocol used only to route messages from one node to another, and AppleTalk, a communications protocol used on Apple and Macintosh networks, can be used for LAN to LAN connections, but those protocols cannot connect from the Internet to a LAN. Does the Internet connection of the Router support 100Mbps Ethernet? The Routers current hardware design supports up to 100Mbps Ethernet on its Internet port; however, the Internet connection speed will vary depending on the speed of your broadband connection. The Router also supports 100Mbps over the auto-sensing Fast Ethernet 10/100 switch on the LAN side of the Router.

Ping statistics for 24.53.32.4: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms Figure B-2 2. Write down the web address returned by the ping command. (In the example in Figure C-2, mail.msnv3.occa.home.com is the web address.) This web address is the web address assigned to the IP address you just pinged. While the IP address of mail could conceivably change, it is likely that this web address will not. 3. Replace your ISPs abbreviated server address with this extended web address in the corresponding Internet application (web browser, e-mail application, etc.). Once you have replaced the brief server address with the true server address, the Router should have no problem accessing the Internet through that Internet application.
1. On the Setup tab of the Routers web-based utility, click the Enable radio button next to WEP. Then click the Edit WEP Settings button. 2. You will see the 2.4GHz, 54g, Wireless-G (WEP) screen (Figure C-1). Next to Default Transmit Key, select which WEP key (1-4) will be used when the Router sends data. Make sure the receiving device is using the same key.
5. WEP keys enable you to create an encryption scheme for wireless LAN transmissions. If you are not using a Passphrase, then manually enter a set of values in each Key field. (Do not leave a key field blank, and do not enter all zeroes. These are not valid key values.) If you are using 64-bit WEP encryption, then the key must be exactly 10 hexadecimal characters in length. If you are using 128-bit WEP encryption, then the key must be exactly 26 hexadecimal characters in length. Valid hexadecimal characters are 0-9 and A-F. 6. Check all the values, and click the Apply button to save your WEP settings and return to the Setup screen. To cancel any changes youve entered on this page, click the Cancel button. To get more information about the features, click the Help button.
Figure C-1 3. For the WEP Encryption drop-down box, select the level of WEP encryption you wish to use, 64-bit 10 hex digits or 128-bit 26 hex digits. Higher encryption levels offer higher levels of security, but due to the complexity of the encryption, they may decrease network performance. 4. Instead of manually entering WEP keys, you can enter a Passphrase in the Passphrase field. 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 manually on the non-Linksys wireless products.) After you enter the Passphrase, click the Generate button to create WEP keys. Note: All Wireless-G and 802.11b devices in your network must use the same Passphrase or WEP 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. The MAC address/Physical Address is what you will use for MAC address cloning or MAC filtering. Note: The MAC address is also called the Physical Address. Write down the IP Address as shown on your computer screen. The example in Figure E-5 shows the IP address of your Ethernet adapter as 192.168.1.100. Your computer may show something different.
Auto-negotiate - To automatically determine the correct settings. The term is often used with communications and networking. For example, Ethernet 10/100 cards, hubs, and switches can determine the highest speed of the node they are connected to and adjust their transmission rate accordingly. Backbone The part of a network that connects most of the systems and networks together and handles the most data. Bandwidth - The transmission capacity of a given facility, in terms of how much data the facility can transmit in a fixed amount of time; expressed in bits per second (bps). Beacon Interval - A beacon is a packet broadcast by the Access Point to keep the network synchronized. A beacon includes the wireless LAN service area, the AP address, the Broadcast destination addresses, a time stamp, Delivery Traffic Indicator Maps, and the Traffic Indicator Message (TIM). Bit A binary digit. The value0 or 1used in the binary numbering system. Also, the smallest form of data. Boot To cause the computer to start executing instructions. Personal computers contain built-in instructions in a ROM chip that are automatically executed on startup. These instructions search for the operating system, load it, and pass control to it. Bottleneck A traffic slowdown that results when too many network nodes try to access a single node, often a server node, at once. Bridge - A device that interconnects different networks together. Broadband - A data-transmission scheme in which multiple signals share the bandwidth of a medium. This allows the transmission of voice, data, and video signals over a single medium. Cable television uses broadband techniques to deliver dozens of channels over one cable. Browser - A browser is an application program that provides a way to look at and interact with all the information on the World Wide Web or PC. The word browser seems to have originated prior to the Web as a generic term for user interfaces that let you browse text files online. Buffer - A buffer is a shared or assigned memory area used by hardware devices or program processes that operate at different speeds or with different
sets of priorities. The buffer allows each device or process to operate without being held up by the other. In order for a buffer to be effective, the size of the buffer and the algorithms for moving data into and out of the buffer need to be considered by the buffer designer. Like a cache, a buffer is a midpoint holding place but exists not so much to accelerate the speed of an activity as to support the coordination of separate activities. Cable Modem - A device that connects a computer to the cable television network, which in turn connects to the Internet. Once connected, cable modem users have a continuous connection to the Internet. Cable modems feature 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 (the singular is commonly referred to as CAT) of twisted pair cabling systems (wires, junctions, and connectors) in terms of the data rates that they can sustain. CAT 5 cable has a maximum throughput of 100 Mbps and is usually utilized for 100BaseTX networks. CPU (Central Processing Unit) - The computing part of the computer. Also called the processor, it is made up of the control unit and ALU. CSMA/CD (Carrier Sense Multiple Access/Collision Detection) - The LAN access method used in Ethernet. When a device wants to gain access to the network, it checks to see if the network is quiet (senses the carrier). If it is not, it waits a random amount of time before retrying. If the network is quiet and two devices access the line at exactly the same time, their signals collide. When the collision is detected, they both back off and each waits a random amount of time before retrying. CTS (Clear To Send) - An RS-232 signal sent from the receiving station to the transmitting station that indicates it is ready to accept data. Database - A database is a collection of data that is organized so that its contents can easily be accessed, managed, and updated. Data Packet - One frame in a packet-switched message. Most data communications is based on dividing the transmitted message into packets. For example, an Ethernet packet can be from 64 to 1518 bytes in length. Default Gateway - The routing device used to forward all traffic that is not addressed to a station within the local subnet.

a corporation scale, or when it is necessary to connect the wired and wireless networks. IP Address - In the most widely installed level of the Internet Protocol (IP) today, an IP address is a 32-binary digit number that identifies each sender or receiver of information that is sent in packets across the Internet. When you request an HTML page or send e-mail, the Internet Protocol part of TCP/IP includes your IP address in the message (actually, in each of the packets if more than one is required) and sends it to the IP address that is obtained by looking up the domain name in the Uniform Resource Locator you requested or in the e-mail address you're sending a note to. At the other end, the recipient can see the IP address of the Web page requestor or the e-mail sender and can respond by sending another message using the IP address it received. IPCONFIG - A utility that provides for querying, defining and managing IP addresses within a network. A commonly used utility, under Windows NT and 2000, for configuring networks with static IP addresses. IPSec (Internet Protocol Security) - A suite of protocols used to implement secure exchange of packets at the IP layer. IPSec supports two basic modes: Transport and Tunnel. Transport encrypts the payload of each packet, leaving the header untouched, while Tunnel mode encrypts both the header and the payload and is therefore more secure. IPSec must be supported on both transmitter and receiver and must share a public key. Tunnel mode is widely deployed in VPNs (Virtual Private Networks). IRQ (Interrupt ReQuest) - A hardware interrupt on a PC. There are 16 IRQ lines used to signal the CPU that a peripheral event has started or terminated. Except for PCI devices, two devices cannot use the same line. 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. Spectrum in the vicinity of 2.4 GHz, in particular, is being made available worldwide. This presents a truly revolutionary opportunity to place convenient high-speed wireless capabilities in the hands of users around the globe. ISP - An ISP (Internet service provider) is a company that provides individuals and companies access to the Internet and other related services such as website building and virtual hosting. LAN - A local area network (LAN) is a group of computers and associated devices that share a common communications line and typically share the

service for carrying PPP (a tunneling service is any network service enabled by tunneling protocols such as PPTP, L2F, L2TP, and IPSEC tunnel mode). One example of a tunneling service is secure access from a remote small office network to a headquarters corporate intranet via a Virtual Private Network (VPN) that traverses the Internet. However, tunneling services are not restricted to corporate environments and may also be used for personal (i.e., non-business) applications. RIP (Routing Information Protocol) - A simple routing protocol that is part of the TCP/IP protocol suite. It determines a route based on the smallest hop count between source and destination. RIP is a distance vector protocol that routinely broadcasts routing information to its neighboring routers. RJ-11 (Registered Jack-11) - A telephone connector that holds up to six wires. The RJ-11 is the common connector used to plug a telephone into a wall. RJ-45 - A connector similar to a telephone connector that holds up to eight wires, used for connecting Ethernet devices. Roaming - In an infrastructure mode wireless network, this refers to the ability to move out of one access point's range and into another and transparently reassociate and reauthenticate to the new access point. This reassociation and reauthentication should occur without user intervention and ideally without interruption to network connectivity. A typical scenario would be a location with multiple access points, where users can physically relocate from one area to another and easily maintain connectivity. Router - Protocol-dependent device that connects subnetworks together. Routers are useful in breaking down a very large network into smaller subnetworks; they introduce longer delays and typically have much lower throughput rates than bridges. RTS (Request To Send) - An RS-232 signal sent from the transmitting station to the receiving station requesting permission to transmit. Server - Any computer whose function in a network is to provide user access to files, printing, communications, and other services. SMTP (Simple Mail Transfer Protocol) - The standard e-mail protocol on the Internet. It is a TCP/IP protocol that defines the message format and the message transfer agent (MTA), which stores and forwards the mail.
SNMP (Simple Network Management Protocol) - A widely used network monitoring and control protocol. Data is passed from SNMP agents, which are hardware and/or software processes reporting activity in each network device (hub, router, bridge, etc.) to the workstation console used to oversee the network. The agents return information contained in a MIB (Management Information Base), which is a data structure that defines what is obtainable from the device and what can be controlled (turned off, on, etc.). 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 system (DBMS). Application software is any program that processes data for the user. A common misconception is that software is data. It is not. Software tells the hardware how to process the data. SOHO (Small Office/Home Office) - Market segment of professionals who work at home or in small offices. Spread Spectrum - Spread Spectrum technology is a wideband radio frequency technique developed by the military for use in reliable, secure, mission-critical communications systems. It is designed to trade off bandwidth efficiency for reliability, integrity, and security. In other words, more bandwidth is consumed than in the case of narrowband transmission, but the trade off produces a signal that is, in effect, louder and thus easier to detect, provided that the receiver knows the parameters of the spread-spectrum signal being broadcast. If a receiver is not tuned to the right frequency, a spread-spectrum signal looks like background noise. There are two main alternatives, Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS). Static IP Address - A permanent IP address that is assigned to a node in a TCP/IP network. Static Routing - Forwarding data in a network via a fixed path. Static routing cannot adjust to changing line conditions as can dynamic routing. Storage - The semi-permanent or permanent holding place for digital data. STP (Shielded Twisted Pair) - Telephone wire that is wrapped in a metal sheath to eliminate external interference.

TX Rate Transmission Rate. UDP (User Datagram Protocol) - A method (protocol) used along with the IP (Internet Protocol) to send data in the form of message units (datagram) between network devices over a LAN or WAN. While IP takes care of handling the actual delivery of the data (routing), UDP takes care of keeping track of the individual units of data (called packets) that a message is divided into for efficient delivery over the network. UDP is known as a connection-less protocol due to NOT requiring the receiver of a packet to return an acknowledgment of receipt to the sender of the packet (as opposed to TCP). Upgrade - To replace existing software or firmware with a newer version. Upload - To send a file transmitted over a network. In a communications session, upload means transmit, and download means receive. URL (Uniform Resource Locator) - The address that defines the route to a file on the Web or any other Internet facility. URLs are typed into the browser to access Web pages, and URLs are embedded within the pages themselves to provide the hypertext links to other pages. UTP - Unshielded twisted pair is the most common kind of copper telephone wiring. Twisted pair is the ordinary copper wire that connects home and many business computers to the telephone company. To reduce crosstalk or electromagnetic induction between pairs of wires, two insulated copper wires are twisted around each other. Each signal on twisted pair requires both wires. Since some telephone sets or desktop locations require multiple connections, twisted pair is sometimes installed in two or more pairs, all within a single cable. VPN (Virtual Private Network) - A technique that allows two or more LANs to be extended over public communication channels by creating private communication 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). Examples of VPN technology are: PPTP (Point to Point Tunneling Protocol), L2TP (Layer 2 Tunneling Protocol), and IPSec (Internet Protocol Security). WAN (Wide Area Network) - A communications network that covers a relatively large geographic area, consisting of two or more LANs. Broadband communication over the WAN is often through public networks such as the
telephone (DSL) or cable systems, or through leased lines or satellites. In its most basic definition, the Internet could be considered a WAN. WEP (Wired Equivalent Privacy) - A data privacy mechanism based on a 64bit or 128-bi shared key algorithm, as described in the IEEE 802.11 standard. WINIPCFG - Configuration utility based on the Win32 API for querying, defining, and managing IP addresses within a network. A commonly used utility for configuring networks with static IP addresses. WLAN (Wireless Local Area Network) - A group of computers and associated devices that communicate with each other wirelessly. Workgroup - Two or more individuals that share files and databases.