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ABOUT THIS GUIDE
Naming Convention 7 Conventions 8 Feedback About This User Guide Related Documentation 9
INTRODUCING THE ROUTER
OfficeConnect ADSL Wireless 54 Mbps 11g Firewall Router Router Advantages 13 Package Contents 13 Minimum System and Component Requirements 14 Physical Features 14 11
INSTALLING THE ROUTER
Introduction 17 Safety Information 17 Positioning the Router 17 Using the Rubber Feet 18 Wall Mounting 18 Powering Up the Router 19 Connecting the Router 19
SETTING UP YOUR COMPUTERS
Obtaining an IP Address Automatically 23 Windows Windows XP 25 Windows 98/ME 25 Macintosh 25 Disabling PPPoE and PPTP Client Software 26 Disabling Web Proxy 26
RUNNING THE SETUP WIZARD
Accessing the Setup Wizard 27 Setup Wizard - Change Password 30 Setup Wizard - Time and Time Zone 30 Setup Wizard - Connection Type 31 Setup Wizard - LAN Settings 36 Setup Wizard - Wireless Settings 37 Setup Wizard - Configuration Summary 38
CONFIGURING THE ROUTER
Navigating Through the Router Configuration screens Main Menu 39 Welcome Screen 39 Status 39 LAN Settings 40 LAN Settings 40 DHCP Clients List 41 Wireless Settings 43 Configuration 44 Encryption 45 Connection Control 50 Client List 51 WDS Settings 51 Advance 52 Profile 53 Internet Settings 54 ATM PVC 54 DNS 65 Hostname & Clone MAC address 66 Firewall 67 SPI 67 Special Applications 71 Virtual Servers 72 DMZ 73 39
Schedule Rule 74 PC Privileges 75 URL Filter 77 Server Control 79 Quality of Service 81 QoS Settings 81 Traffic Mapping 81 Traffic Statistics 82 Advanced 83 Security 83 Static Routes 86 RIP 87 DDNS 88 SNMP 90 Syslog 91 Proxy ARP 92 System Tools 93 Restart Router 93 Configuration 93 Upgrade 94 Time Zone 95 Ping 96 Traceroute 97 DNS Lookup 98 Status and Logs 99 Status 99 ADSL Status 99 ATM PVC Status 100 Routing Table 100 Logs 101 Support/Feedback 102 Support 102 Feedback 102
Basic Connection Checks 103 Browsing to the Router Configuration Screens 103
Connecting to the Internet 104 Forgotten Password and Reset to Factory Defaults Wireless Networking 105 Recovering from Corrupted Software 107 Frequently Asked Questions 108
The Internet Protocol Suite 109 Managing the Router over the Network 109 IP Addresses and Subnet Masks 109 How does a Device Obtain an IP Address and Subnet Mask? DHCP Addressing 111 Static Addressing 111 Auto-IP Addressing 111
OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router Standards 114 113
SAFETY INFORMATION END USER SOFTWARE LICENSE AGREEMENT OBTAINING SUPPORT FOR YOUR PRODUCT
Register Your Product 123 Purchase Value-Added Services 123 Troubleshoot Online 124 Access Software Downloads 124 Telephone Technical Support and Repair Contact Us 125
GLOSSARY REGULATORY NOTICES INDEX
This guide describes how to install and configure the 3Com OfficeConnect ADSL Wireless 54 Mbps 11g Firewall Router (3CRWDR101A-75/3CRWDR101B-75). This guide is intended for use by those responsible for installing and setting up network equipment; consequently, it assumes a basic working knowledge of LANs (Local Area Networks) and Internet Routers. If a release note is shipped with the 3Com OfficeConnect ADSL Wireless 54 Mbps 11g Firewall Router and contains information that differs from the information in this guide, follow the information in the release note. Most user guides and release notes are available in Adobe Acrobat Reader Portable Document Format (PDF) on the 3Com World Wide Web site:
Throughout this guide, the 3Com OfficeConnect ADSL Wireless 54 Mbps 11g Firewall Router is referred to as the Router. Category 3 and Category 5 Twisted Pair Cables are referred to as Twisted Pair Cables throughout this guide.
Table 1 and Table 2 list conventions that are used throughout this guide.
Table 1 Notice Icons
Icon Notice Type Information note Caution Warning Description Information that describes important features or instructions. Information that alerts you to potential loss of data or potential damage to an application, system, or device. Information that alerts you to potential personal injury.
Table 2 Text Conventions
Convention The words enter and type Keyboard key names Description When you see the word enter in this guide, you must type something, and then press Return or Enter. Do not press Return or Enter when an instruction simply says type. If you must press two or more keys simultaneously, the key names are linked with a plus sign (+). Example: Press Ctrl+Alt+Del Italics are used to:
The rear panel (Figure 4) of the Router contains four LAN ports, one ADSL port, a reset button, a power OK LED, and a power adapter socket.
Figure 4 Router - Rear Panel
7 Wireless Antennae The antennae should be placed in a V position when initially installed. CAUTION: Do not force the antennae beyond their mechanical stops. Rotating the antennae further may cause damage. 8 ADSL Port Using the RJ-11 cable provided, you should connect your Router to the telephone socket via a splitter. 9 Power OK LED Indicates the Router is powered on, the power adapter is working properly. 10 Power Adapter Socket Only use the power adapter that is supplied with this Router. Do not use any other adapter. 11 Reset Button If you want to reset your Router to factory default settings, and cannot access the web management interface (for example, due to a lost password), then you may use this button. Refer to Forgotten Password and Reset to Factory Defaults on page 104 for further details. 12 Ethernet Ports Using suitable RJ-45 cables, you can connect your Router to a computer, or to any other piece of equipment that has an Ethernet connection (for example, a hub or a switch). These ports have an automatic MDI/MDIX feature, which means either straight-through or a crossover cable can be used.
This chapter will guide you through a basic installation of the Router, including:
Connecting the Router to the Internet. Connecting the Router to your network. Setting up your computers for networking with the Router.
Please note the following: WARNING: Please read the Safety Information section in Appendix C before you start. VORSICHT: Bitte lesen Sie den Abschnitt Wichtige Sicherheitshinweise sorgfltig durch, bevor Sie das Gert einschalten. AVERTISSEMENT: Veuillez lire attentivement la section Consignes importantes de scurit avant de mettre en route.
Positioning the Router
You should place the Router in a location that:
is conveniently located for connection to the telephone socket. is centrally located to the wireless computers that will connect to the Router. A suitable location might be on top of a high shelf or similar furniture to optimize wireless connections to computers in both horizontal and vertical directions, allowing wider coverage. allows convenient connection to the computers that will be connected to the four LAN ports on the rear panel, if desired. allows easy viewing of the front panel LED indicator lights, and access to the rear panel connectors, if necessary.
CHAPTER 2: INSTALLING THE ROUTER
When positioning your Router, ensure:
It is out of direct sunlight and away from sources of heat. Cabling is away from power lines, fluorescent lighting fixtures, and sources of electrical noise such as radios, transmitters and broadband amplifiers. Water or moisture cannot enter the case of the unit. Air flow around the unit and through the vents in the side of the case is not restricted. 3Com recommends you provide a minimum of 25 mm (1 in.) clearance.
Using the Rubber Feet
Use the four self-adhesive rubber feet to prevent your Router from moving around on your desk or when stacking with flat top units. Only stick the feet to the marked areas at each corner of the underside of your Router.
There are two slots on the underside of the Router that can be used for wall mounting. When wall mounting the unit, ensure that it is within reach of the power outlet. You will need two suitable screws to wall mount the unit. To do this: 1 Ensure that the wall you use is smooth, flat, dry and sturdy and make two screw holes which are 150 mm (5.9 in.) apart. 2 Fix the screws into wall, leaving their heads 3 mm (0.12 inch) clear of the wall surface. 3 Remove any connections to the unit and locate it over the screw heads. When in line, gently push the unit on to the wall and move it downwards to secure. When making connections, be careful not to push the unit up and off the wall. CAUTION: Only wall mount single units, do not wall mount stacked units.
Powering Up the Router
To power up the Router: 1 Plug the power adapter into the power adapter socket located on the back panel of the Router. 2 Plug the power adapter into a standard electrical wall socket. 3 Press the power button located on the back of the Router.
Connecting the Router
The first step for installing your Router is to physically connect it to the telephone socket and then connect it to a computer in order to be able to access the Internet. See Figure 5:
Figure 5 Connecting the Router
Power Supply Unit
3Com OfficeConnect ADSL Wireless 11g Firewall Router
Splitter/ Microfilter Block
1 Run the provided telephone cable from the wall jack providing ADSL service to the ADSL port on your Router. When inserting an ADSL RJ-11 plug, be sure the tab on the plug clicks into position to ensure that it is properly seated. If you are using splitterless ADSL service, add low-pass filters between the ADSL wall jack and your telephones. (These filters pass voice signals through but filter data signals out.) 2 Then:
If you are using a full-rate (G.dmt) connection, your service provider will attach the outside ADSL line to a data/voice splitter. In this case
you can connect your phones and computer directly to the splitter as shown below (Figure 6): or
If you are using a splitterless (G.lite) connection, then your service provider will attach the outside ADSL line directly to your phone system. In this case you can connect your phones and computer directly to the incoming ADSL line, but you will have to add low-pass filters to your phones as shown below (Figure 7)
Figure 6 Installing with a splitter
Plain Old Telephone System (POTS)
Residential Connection Point (NID)
Ethernet hub or switch
Figure 7 Installing without a splitter
Residential Connection Point [Network Interface Device (NID)]
Voice & Data
You have now completed the hardware installation of your Router. Next you need to set up your computers so that they can make use of the Router to communicate with the Internet. 3Com recommends that you perform the initial Router configuration from a computer that is directly connected to one of the LAN ports. If you configure the Router from a wireless computer, note that you may lose contact with the Router if you change the wireless configuration. To communicate wirelessly with your Router, your wireless NIC should be set as follows:
Encryption none SSID 3Com Channel 11
The Router has the ability to dynamically allocate network addresses to the computers on your network, using DHCP. However, your computers need to be configured correctly for this to take place. To change the configuration of your computers to allow this, follow the instructions in this chapter.
Obtaining an IP Address Automatically
Windows 2000 If you are using a Windows 2000-based computer, use the following procedure to change your TCP/IP settings: 1 From the Windows Start Menu, select Settings > Control Panel. 2 Double click on Network and Dial-Up Connections. 3 Double click on Local Area Connection. 4 Click on Properties. 5 A screen similar to Figure 8 should be displayed. Select Internet Protocol TCP/IP and click on Properties.
CHAPTER 3: SETTING UP YOUR COMPUTERS
Figure 8 Local Area Properties Screen
6 Ensure that the options Obtain an IP address automatically, and Obtain DNS server address automatically are both selected as shown in Figure 9. Click OK.
Figure 9 Internet Protocol (TCP/IP) Properties Screen
7 Restart your computer.
Windows XP 1 From the Windows Start Menu, select Control Panel. 2 Click on Network and Internet Connections. 3 Click on the Network Connections icon. 4 Double click on LAN or High Speed Connection icon. A screen titled Local Area Connection Status will appear. 5 Select Internet Protocol TCP/IP and click on Properties. 6 Ensure that the options Obtain an IP address automatically, and Obtain DNS servers automatically are both selected. Click OK. 7 Restart your computer. Windows 98/ME 1 From the Windows Start Menu, select Settings > Control Panel. 2 Double click on Network. Select the TCP/IP item for your network card and click on Properties. 3 In the TCP/IP dialog, select the IP Address tab, and ensure that Obtain IP address automatically is selected. Click OK. Macintosh If you are using a Macintosh computer, use the following procedure to change your TCP/IP settings: 1 From the desktop, select Apple Menu, Control Panels, and TCP/IP. 2 In the TCP/IP control panel, set Connect Via: to Ethernet. 3 In the TCP/IP control panel, set Configure: to Using DHCP Server. 4 Close the TCP/IP dialog box, and save your changes. 5 Restart your computer.
Disabling PPPoE and PPTP Client Software
If you have PPPoE client software installed on your computer, you will need to disable it. To do this: 1 From the Windows Start Menu, select Settings > Control Panel. 2 Double click on Internet Options. 3 Select the Connections Tab. A screen similar to Figure 10 should be displayed. 4 Select the Never dial a connection option.
Figure 10 Internet Properties Screen
You may want to remove the PPPoE client software from your computer to free resources, as it is not required for use with the Router.
Disabling Web Proxy
Ensure that you do not have a web proxy enabled on your computer. Go to the Control Panel and click on Internet Options. Select the Connections tab and click LAN Settings at the bottom. Make sure that the Use Proxy Server option is unchecked.
Accessing the Setup Wizard
The Router setup program is Web-based, which means that it is accessed through your Web browser (Netscape Navigator 4.7 or higher, Internet Explorer 5.0 or higher, or Mozilla 1.2.1 or higher). To use the Setup Wizard: 1 Ensure that you have at least one computer connected to the Router. Refer to Chapter 2 for details on how to do this. 2 Launch your Web browser on the computer. 3 Enter the following URL in the location or address field of your browser: http://192.168.1.1 (Figure 11). The Login screen displays.
Figure 11 Web Browser Location Field (Factory Default)
CHAPTER 4: RUNNING THE SETUP WIZARD
4 To log in as an administrator, enter the password (the default password is admin) in the System Password field and click Log in (Figure 12).
Figure 12 Router Login Screen
5 When you have logged in,
if you are logging in for the first time, the Country Selection screen will appear (Figure 13). Please select the country form the drop-down menu, and click Apply.
Figure 13 Country Selection Screen
The Wizard will then launch automatically (refer to Figure 16). You will be guided step by step through a basic setup procedure.
if the Router has been configured previously, the Welcome screen will appear (Figure 14). There are three tabs: Notice Board, Password and Wizard.
Figure 14 Welcome Screen
Go to the Notice Board tab to see the current software information. To view the Web help, click the Help button. Go to the Password tab to change the password (Figure 15). Go to the Wizard tab to do a quick setup of the Router (Figure 16).
The password screen allows you to change the current password and set the login time limit to the Routers management interface.
Figure 15 Password Screen
1 To change the current password, enter the password in the Current Password field. 2 Enter the new password in the New Password field, and enter it again in the Confirm New Password field.
12 Enter the PCR/SCR/MBS values. This information should be provided to you by your ISP.
13 Click Apply. PPPoA PPP over ATM, this is a popular choice among European DSL providers. To configure this function correctly, you should obtain the information from your ISP.
Figure 46 PPPoA Settings Screen
1 Select PPPoA from the Protocol drop-down menu. 2 IP assigned by ISP:
Select Yes, if your ISP assigns your IP address dynamically, and proceed to next step. If your ISP has assigned you a fixed or static IP address, select No in the IP assigned by ISP field. Then enter the IP address and Subnet Mask information provided by your ISP into the IP address and Subnet Mask fields.
3 Enter the user name assigned to you by your ISP in the Username field. And enter the password assigned to you by your ISP in the Password field. Re-enter your password in the Confirm Password field.
4 Select the connection type from the Connect Type drop-down menu.
Always Connected means the Internet connection to your ISP is always on. Auto - Triggered by Traffic means your Router will automatically connect to your ISP every time a PC needs to access the Internet. Manual - Start in Disconnected means that after re-booting the Router, the Internet connection will need to be re-established manually by the user. Manual - Start in Connected means that after re-booting the Router, it will automatically establish connection to your ISP. Manual - Start in Last State means that after re-booting the Router, the Internet connection will stay in the previous condition before the reboot.
5 If you want your Router to automatically disconnect from the Internet after a period of inactivity, specify a time in the Idle Time (Minutes) field. (Enter a value of 0 to disable this timeout). 6 Enter the MTU value supplied by your ISP. If you do not know this, leave it at the default value. 7 The Router supports the IP Control Protocol (IPCP) Subnet Mask Support feature, check the IPCP subnet checkbox to enable it. 8 To use the IPCP Subnet Mask Support for the DHCP clients, check the IPCP Subnet Populate DHCP Server checkbox. 9 Enter the VPI and VCI parameters provided to you by your ISP in the VPI and VCI fields. You can click Auto Search to automatically find out this information. 10 Select the encapsulation type (LLC or VC MUX) in the Encapsulation Type field. This information is provided to you by your ISP. 11 Select the type of Quality of Service (CBR, UBR or VBR) in the QoS field.
CBR (constant bit rate): the CBR service class is intended for real-time applications, for example, those requiring tightly constrained delay and delay variation, such as voice and video applications. The consistent availability of a fixed quantity of bandwidth is considered appropriate for CBR service. VBR (variable bit rate): QoS class defined by the ATM Forum for ATM networks. VBR is subdivided into a real time (RT) class and non-real time (NRT) class. VBR (RT) is used for connections in which there is a fixed timing relationship between samples. VBR (NRT) is
Special Applications let you choose specific ports to be open for specific applications to work properly with the Network Address Translation (NAT) feature of the Router.
Figure 56 Special Applications Screen
A list of popular applications has been included to choose from. Select your application from the Popular Applications drop-down menu. Then select the row that you want to copy the settings to from the Copy To drop-down menu, and click Copy To. The settings will be transferred to the row that you specified. Click Apply to save the setting for that application. If your application is not listed, you will need to check with the application vendor to determine which ports need to be configured. You can manually enter the port information into the Router. To manually enter the port information: 1 Specify the trigger port (the one used by the application when it is initialized) in the Trigger Port column, and specify whether the trigger is TCP or UDP. 2 Specify the Public Ports used by the application, that will need to be opened up in the firewall for the application to work properly. Also specify whether these ports are TCP or UDP. 3 Check the Enabled checkbox, then click Apply.
The Virtual servers feature allows you to route external (Internet) calls for services such as a web server (port 80), FTP server (Port 21), or other applications through your Router to your internal network. Since your internal computers are protected by a firewall, machines from the Internet cannot get to them because they cannot be 'seen'. If you need to configure the Virtual Server function for a specific application, you will need to contact the application vendor to find out which port settings you need. The maximum number of virtual servers that can be configured is 20.
Figure 57 Virtual Servers Screen
A list of popular servers has been included to choose from. Select the server from the Popular servers drop-down menu. Then click Add, your selection will be added to the table. If the server that you want to use is not listed in the drop-down menu, you can manually add the virtual server to the table. To manually configure your virtual servers: 1 Enter the IP address, and the description in the spaces provided for the internal machine. 2 Select the protocol type (TCP, UDP, or both TCP and UDP) from the drop-down menu. 3 Specify the public port that will be seen by clients on the Internet, and the LAN port which the traffic will be routed to.
Status and Logs
You can use the Status Screen to view version numbers for your Routers software and hardware and check the status of connections to WAN, LAN and WLAN interfaces.
Figure 85 Status Screen
This screen shows Router status and statistics. ADSL Status
Figure 86 ADSL Status Screen
This screen shows ADSL modem status and statistics.
ATM PVC Status
Figure 87 ATM PVC Status Screen
This screen shows ATM PVC status and statistics.
Click Release to release the IP address from your ISP. Click Renew to obtain the IP address from your ISP.
This screen displays details for the default routing used by your Router and any routing created using Static Routing or RIP.
Figure 88 Routing Table Screen
This screen shows any attempts that have been made to gain access to your network as well as the system activities.
Figure 89 Logs Screen
Click Help to view the help file. Click Save to save the log to the hard disk as a text file. When prompted for a location to save the file to, specify a filename and location, and then click OK. Click Clear to clear the log (note that all current entries will be erased). Click Refresh to update the record.
You can use the Support/Feedback screen to obtain support and help, and also provide feedback to 3Com.
Figure 90 Support Screen
This screen shows support information. Feedback To provide feedback to 3Com, please click Provide Feedback, and this will connect you to the 3Com Web site.
Figure 91 Feedback Screen
This screen shows feedback information.
Basic Connection Checks
Check that the Router is connected to your computers and to the telephone line, and that all the equipment is powered on. Check that the LAN Status and SYNC LEDs on the Router are illuminated, and that any corresponding LEDs on the NIC are also illuminated. Ensure that the computers have completed their start-up procedure and are ready for use. Some network interfaces may not be correctly initialized until the start-up procedure has completed. If the link status LED does not illuminate for a port that is connected, check that you do not have a faulty cable. Try a different cable.
Browsing to the Router Configuration Screens
If you have connected your Router and computers together but cannot browse to the Router configuration screens, check the following:
This section lists the technical specifications for the OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router.
OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router
Interfaces DSL connection LAN connection four 10 Mbps/100 Mbps dual speed Ethernet ports (10BASE-T/100BASE-TX) WLAN Interfaces Standard IEEE 802.11g, Direct Sequence Spread Spectrum (DSSS) Transmission rate: 54 Mbps, automatic fallback to 48, 36, 24, 18, 12, or 6 Mbps Maximum channels: 13 Range up to 304.8m (1000ft) Sensitivity: 6, 12, 18, 24, 36, 48 Mbps: -85 dBm; 54 Mbps -66 dBm typical Modulation: CCK, BPSK, QPSK, OFDM Encryption: 40/64 bit WEP, 128 bit WEP, WPA Maximum clients: 128 O/P Power: 18dBm Standard IEEE 802.11b, Direct Sequence Spread Spectrum (DSSS) Transmission rate: 11Mbps, automatic fallback to 5.5, 2, or 1 Mbps Maximum channels: 13 Range up to 304.8m (1000ft) Sensitivity: 1, 2, 5.5 Mbps: -85 dBm; 11 Mbps -82 dBm typical Modulation: CCK, BPSK, QPSK Encryption: 40/64 bit WEP, 128 bit WEP, WPA Maximum clients: 128 O/P Power 16dBm
APPENDIX B: TECHNICAL SPECIFICATIONS
Operating Temperature 0 C to 40 C (32 F to 105 F) Power 8VA, 25 BThU/hr Humidity 0% to 90% (non-condensing) humidity Dimensions
Width = 220 mm (8.7 in.) Depth = 133 mm (5.2 in.) Height = 38 mm (1.5 in.)
Weight Approximately 550 g (1.1 lbs) Standards Functional: ISO 8802/3 IEEE 802.3 IEEE 802.11b, 802.11g EN 60950-1: 2001 UL 60950-1 IEC 60950-1: 2001 FCC Part15 B EN 55022 EN 55024 EN 61000 EN 301 489-1 ICES-003 FCC Part 15 C RSS-210 EN 300 328
Environmental: EN 60068 (IEC 68) *See Regulatory Notices for conditions of operation.
Operating Systems The Router will support the following Operating Systems:
Windows 98Se Windows NT 4.0 Windows ME Windows 2000 Windows XP Mac OS 8.5 or higher Unix
Ethernet Performance Cable Specifications
The Router complies to the IEEE 802.3i, u and x specifications. The Router supports the following cable types and maximum lengths:
Category 3 (Ethernet) or Category 5 (Fast Ethernet or Dual Speed Ethernet) Twisted Pair shielded and unshielded cable types. Maximum cable length of 100m (327.86 ft).
Important Safety Information
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The IEEE specification for wireless Ethernet which allows speeds of up to 11 Mbps. The standard provides for 1, 2, 5.5 and 11 Mbps data rates. The rates will switch automatically depending on range and environment. The IEEE specification for wireless Ethernet which allows speeds of up to 54 Mbps. The standard provides for 6, 12, 24, 36, 48 and 54 Mbps data rates. The rates will switch automatically depending on range and environment. The IEEE specification for 10 Mbps Ethernet over Category 3, 4 or 5 twisted pair cable. The IEEE specification for 100 Mbps Fast Ethernet over Category 5 twisted-pair cable. An access point is a device through which wireless clients connect to other wireless clients and which acts as a bridge between wireless clients and a wired network, such as Ethernet. Wireless clients can be moved anywhere within the coverage area of the access point and still connect with each other. If connected to an Ethernet network, the access point monitors Ethernet traffic and forwards appropriate Ethernet messages to the wireless network, while also monitoring wireless client radio traffic and forwarding wireless client messages to the Ethernet LAN. Ad Hoc mode is a configuration supported by most wireless clients. It is used to connect a peer to peer network together without the use of an access point. It offers lower performance than infrastructure mode, which is the mode the router uses. (see also Infrastructure mode.)
Ad Hoc mode
Some devices in the range support auto-negotiation. Auto-negotiation is where two devices sharing a link, automatically configure to use the best common speed. The order of preference (best first) is: 100BASE-TX full duplex, 100BASE-TX half duplex, 10BASE-T full duplex, and 10BASE-T half duplex. Auto-negotiation is defined in the IEEE 802.3 standard for Ethernet and is an operation that takes place in a few milliseconds. The information capacity, measured in bits per second, that a channel can transmit. The bandwidth of Ethernet is 10 Mbps, the bandwidth of Fast Ethernet is 100 Mbps. The bandwidth for 802.11b wireless is 11Mbps. One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-586 standard. Category 3 is voice grade cable and can only be used in Ethernet networks (10BASE-T) to transmit data at speeds of up to 10 Mbps. One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-586 standard. Category 5 can be used in Ethernet (10BASE-T) and Fast Ethernet networks (100BASE-TX) and can transmit data up to speeds of 100 Mbps. Category 5 cabling is better to use for network cabling than Category 3, because it supports both Ethernet (10 Mbps) and Fast Ethernet (100 Mbps) speeds. Similar to any radio device, the Wireless Cable/DSL router allows you to choose different radio channels in the wireless spectrum. A channel is a particular frequency within the 2.4GHz spectrum within which the Router operates. The term used to describe the desktop PC that is connected to your network. Dynamic Host Configuration Protocol. This protocol automatically assigns an IP address for every computer on your network. Windows 95, Windows 98 and Windows NT 4.0 contain software that assigns IP addresses to workstations on a network. These assignments are made by the DHCP server software that runs on Windows NT Server, and Windows 95 and Windows 98 will call the server to obtain the address. Windows 98 will allocate itself an address if no DHCP server can be found.
Traffic Universal Plug and Play
The movement of data packets on a network. Universal Plug and Play is a system which allows compatible applications to read some of their settings from the Router. This allows them to automatically configure some, or all, of their settings and need less user configuration. A URL Filter is a feature of a firewall that allows it to stop its clients form browsing inappropriate Web sites. Wide Area Network. A network that connects computers located in geographically separate areas (for example, different buildings, cities, or countries). The Internet is an example of a wide area network. Wireless Distribution System. WDS enables one or more access points to rebroadcast received signals to extend range and reach, though this can affect the overall throughput of data. Wireless Ethernet Compatibility Alliance. An industry group formed to certify cross vendor interoperability and compatibility of 802.11b and 802.11g wireless networking products and to promote the standard for enterprise, small business and home environments. (see also 802.11b, 802.11g, Wi-Fi) Wired Equivalent Privacy. A shared key encryption mechanism for wireless networking. Encryption strength is 40/64 bit or 128 bit. Wireless Fidelity. This is the certification granted by WECA to products that meet their interoperability criteria. (see also 802.11b, WECA) The term used to describe a desktop or mobile PC that is wirelessly connected to your wireless network. Another term for ESSID (Extended Service Set Identifier).
Wireless LAN Service Area Wizard
A Windows application that automates a procedure such as installation or configuration.
Wireless Local Area Network. A WLAN is a group of computers and devices connected together by wireless in a relatively small area (such as a house or office). Wi-Fi Protected Access. A dynamically changing encryption mechanism for wireless networking. Encryption strength is 256 bit.
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