Linksys BEFSR81 User Manual
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Linksys BEFSR81 User Manual

Linksys BEFSR81 User Manual

Instant broadband series etherfast cable/dsl router with qos and 8-port switch
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Enlarged version
Instant Broadband
®
Series
®
EtherFast
Cable/DSL
Router with QoS and

8-Port Switch

Use this guide to install:
BEFSR81 ver. 2
User Guide

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Summary of Contents for Linksys BEFSR81

  • Page 1: Port Switch

    Instant Broadband ® Series ® EtherFast Cable/DSL Router with QoS and 8-Port Switch Use this guide to install: BEFSR81 ver. 2 User Guide...
  • Page 2 Linksys reserves the right to revise or update its prod- ucts, software, or documentation without obligation to notify any individual or entity.

  • Page 3: Table Of Contents

    Table of Contents Chapter 1: Introduction ® The EtherFast Cable/DSL Router with QoS and 8-Port Switch Features An Introduction to LANs and WANs IP Addresses Network Setup Overview Chapter 2: Getting to Know the EtherFast Cable/DSL Router with QoS and 8-Port Switch The Router’s Back Panel...

  • Page 4: Chapter 1: Introduction

    • Supports QoS for Data Prioritization Based on Ports and Internet Services • Supports VPN Pass-Through Using IPSec and PPTP Connections • Set up Your Computers and Router Easily Using Linksys Setup Wizard • Supports UPnP for Easy Network Configuration •...

  • Page 5: Network Setup Overview

    EtherFast ® By default, the Router can act as a DHCP server for your LAN. If you already have a DHCP server running on your network, you must disable one of the two DHCP servers. If you run more than one DHCP server on your network, you will experience network errors, such as conflicting IP addresses.

  • Page 6: Chapter 2: Getting To Know The Etherfast

    The Reset button can be used in one of two ways: 1. If the Router is having problems connecting to the Internet, press the Reset button for just a moment with a paper clip or a pencil tip. This clears up any jammed connections, and is similar to pressing the Reset button on your PC to reboot it.

  • Page 7: Chapter 3: Connect The Router

    Chapter 3: Connect the Router Overview Unlike a hub or a switch, the Router’s setup consists of more than simply plug- ging 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 8: Connecting Your Hardware Together And Booting Up

    5. Power on the cable or DSL modem. 6. Press the Reset button on the Router’s front panel with a paper clip or a pencil. Hold the button in until the Diag LED lights up and then turns off.

  • Page 9: Chapter 4: Configure The Pcs

    Settings option, you’re running Windows XP. Click the Cancel button when done. You may need to do this for each computer you are connecting to the Router. Important: These instructions apply only to Windows 95, 98, Millennium, 2000, or XP machines. For TCP/IP setup under Windows NT, see your Windows manual.

  • Page 10: Configuring Windows 2000 Pcs

    (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. Go to “Chapter 5: Configure the Router.” Instant Broadband Series ®...

  • Page 11: Configuring Windows Xp Pcs

    Figure 4-5, and click the OK button. Click the OK button again to com- plete the PC configura- tion. 5. Restart your computer. Go to “Chapter 5: Configure the Router.” Instant Broadband Series EtherFast ® Configuring Windows XP PCs The following instructions assume you are running Windows XP with the default interface.

  • Page 12: Chapter 5: Configure The Router

    ® Chapter 5: Configure the Router This chapter will show you how to configure the Router to function in your net- work 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 6: The Router’s Web-based Utility.”...
  • Page 13 Based on the setup instructions from your ISP, you may need to provide the Host Name and Domain Name. These fields allow you to provide a host name and domain name for the Router and are usually left blank. If request- ed by your ISP (usually cable ISPs), complete these two fields.
  • Page 14 5. Instant Broadband Series ® Figure 5-6 Figure 5-7 EtherFast Cable/DSL Router with QoS and 8-Port Switch ® PPTP PPTP is a service used in Europe only. If you are using a PPTP connection, check with your ISP for the necessary setup infor- mation.

  • Page 15: Chapter 6: The Router's Web-Based Utility

    7. Restart your computers so that they can obtain the Router’s new settings. If you need advanced setting information, please refer to “Chapter 6: The Router’s Web-based Utility” or the Linksys support website at support.linksys.com. Test the setup by opening your web browser from any computer and enter- ing http://www.linksys.com/registration, as shown in Figure 5-9.

  • Page 16: Setup

    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 screen’s values.
  • Page 17 If you need to use a permanent IP address, select Static IP, shown in Figure 6- Specify WAN IP Address This is the Router’s IP address, when seen from the WAN, or the Internet. Your ISP will provide you with the IP Address you need to specify here.
  • Page 18 Subnet Mask This is the Router’s Subnet Mask, as seen by external users on the Internet (including your ISP). Your ISP will provide you with the Subnet Mask. Default Gateway Address Your ISP will provide you with the Default Gateway Address.

  • Page 19: Password

    SNMP Community names, enable UPnP Services, and restore the Router’s default settings. Router Password Set a password for the Router. You can use up to 64 alphanu- meric characters. The default password is admin. If you don’t change the pass- word, all users on your network will be able to access the Router using the default password.

  • Page 20: Status

    Restore Factory Defaults If you select the Restore Factory Defaults option and click the Apply button, you will clear all of the Router’s settings. Do not restore the factory defaults unless you are having difficulties with the Router and have exhausted all other troubleshooting measures. Once the Router is reset, you will have to re-enter all of your configuration data.

  • Page 21: Dhcp

    DHCP From the DHCP screen, shown in Figure 6-12, you can configure the Router as a DHCP Server. Figure 6-12 A Dynamic Host Configuration Protocol (DHCP) server automatically assigns an IP address to each PC on your network for you. Unless you already have one, it is highly recommended that you leave the Router enabled as a DHCP server.

  • Page 22: Log

    Send Log to For a permanent record of these logs, Logviewer software must be used. This software can be downloaded from the Linksys website, www.linksys.com. The Logviewer saves all incoming and outgoing activity as a permanent file on the hard drive of the PC running the Logviewer software. In the Send Log to field, enter this PC’s fixed IP address.

  • Page 23: Help

    Instant Broadband Series EtherFast ® To upgrade the Router’s firmware: 1. Download the firmware upgrade file from www.linksys.com, and extract the file using WinZip. 2. Select the Help tab (see Figure 6-16). 3. Click Upgrade Firmware to display a new window (see Figure 6-17).

  • Page 24: Ip Filtering

    Enter the port numbers you want to filter in the port numbers fields. Users connected to the Router will no longer be able to access any port number listed there. Click the Apply button when you’re done.

  • Page 25: Port Range Forwarding

    Internet. To enable this feature, click on Enable, and click the Apply button. Remote Management must be activated before you can manage the Router from a remote location. If you wish to use this feature on the brows- er, enter http:\\<WAN IP Address>:8080. (Enter your specific WAN IP Address in place of <WAN IP Address>.)
  • Page 26 Forwarding will not function if the Enable button is left unchecked. This is disabled (unchecked) by default. 6. Configure as many entries as needed—the Router supports up to 10 ranges of ports. Click the Apply button when you are done.
  • Page 27 (unchecked) by default. Port Triggering To access the Port Triggering screen (Figure 6-22), used to allow the Router to watch outgoing data for specific port numbers, click the Port Triggering but- ton from the Port Range Forwarding screen. The IP address of the computer...

  • Page 28: Dynamic Routing

    ® Static Routing If the Router is connected to more than one network, it may be necessary to set up a static route between them. This can be done from the Static Routing screen, shown in Figure 6-24. A static route is a pre-determined pathway that network information must travel to reach a specific host or network.

  • Page 29: Dmz Host

    IP address is set to 0. For example, the Router’s standard IP address is 192.168.1.1. Based on this address, the address of the routed network is 192.168.1.x, with the last digit “x”...

  • Page 30: Qos (Quality Of Service)

    ® Port-based QoS Port-based QoS settings allow you to prioritize performance on four of the Router’s ports (LAN ports 1-4). You can also disable QoS for a specific port. The Router’s other four ports are automatically assigned Low Priority. Port-Based QoS does not require support from your ISP as the priori- tized ports are LAN ports going out to your network.

  • Page 31: Appendix A: Troubleshooting

    D. Click the Gateway tab, and in the New Gateway prompt, enter 192.168.1.1, which is the default IP address of the Router. Click the Add button to accept the entry. E. Click the DNS tab, and make sure the DNS Enabled option is selected.
  • Page 32 Protocol (TCP/IP). Then, click the Properties button. E. Enter a unique IP address that is not used by any other computer on the net- work connected to the Router. You can only use an IP address in the ranges 192.168.1.2 to 192.168.1.99 and 192.168.1.151 to 192.168.1.254.
  • Page 33 Router, cable/DSL modem, and computer. Check the Status tab of the Router’s web-based utility to see if you get an IP address. 4. I am not able to access the Router’s web interface Setup page.
  • Page 34 Internet application. This would require that you set up the Router to deliver incoming packets or data to a specific com- puter. This also applies to the Internet applications you are using. The best way to get the information on what port services to use is to go to the website of the online game or application you want to use.
  • Page 35 In order to upgrade the firmware with the latest features, you need to go to the Linksys website and download the latest firmware at www.linksys.com. Follow these steps: A. Go to the Linksys website at http://www.linksys.com and download the latest firmware. B. Go to the Help section found in “Chapter 6: The Cable/DSL Router’s Web- based Utility.”...
  • Page 36 This may not always work, so you may need to re-establish the connection periodically. 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.

  • Page 37: 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.
  • Page 38 ISP. Does the Router support any operating system other than Windows 95, Windows 98, Windows 2000, Windows NT, or Windows XP? Yes, but Linksys does not, at this time, provide technical support for setup, configuration or troubleshooting of any non-Windows operating systems.

  • Page 39: Appendix B: Glossary

    How do I get mIRC to work with the Router? Under the Port Range Forwarding tab, set port forwarding to 113 for the PC on which you are using mIRC. If your questions are not addressed here, refer to the Linksys website, www.linksys.com.
  • Page 40 Dynamic IP Address - An IP address that is automatically assigned to a client station in a TCP/IP network, typically by a DHCP server. Network devices that serve multiple users, such as servers and printers, are usually assigned static IP addresses. Cable/DSL Router with QoS and 8-Port Switch ®...
  • Page 41 Dynamic Routing - The ability for a router to forward data via a different route based on the current conditions of the communications circuits. For example, it can adjust for overloaded traffic or failing lines and is much more flexible than static routing, which uses a fixed forwarding path.
  • Page 42 PC, to provide network communication capabilities to and from that computer system. Also called an adapter. Notebook (PC) - A notebook computer is a battery-powered personal computer generally smaller than a briefcase that can easily be transported and convenient- Cable/DSL Router with QoS and 8-Port Switch ®...
  • Page 43 Port - A pathway into and out of the computer or a network device such as a switch or router. For example, the serial and parallel ports on a personal comput- er are external sockets for plugging in communications lines, modems, and print- ers.
  • Page 44 Data is passed from SNMP agents, which are hard- ware 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.).

  • Page 45: Appendix C: How To Ping Your Isp's E-Mail & Web Addresses

    Internet. For example, www.linksys.com is actually 216.23.162.142. Type it into your web browser and you will wind up at the Linksys home page every time. There are servers that translate the URL to an IP address; this is called the Domain Name System (DNS).
  • Page 46 3. Replace your ISP’s 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.

  • Page 47: Appendix D: Installing The Tcp/Ip Protocol

    Supply them as needed, e.g., c:\windows\options\cabs, D:\win98, D:\win95 (where “D” is the letter of your CD-ROM drive). 9. Windows will ask you to restart the PC. Click the Yes button. Cable/DSL Router with QoS and 8-Port Switch ® Figure D-2 Figure D-3 TCP/IP installation is now complete.

  • Page 48: Appendix E: Twisted-Pair Cabling

    Crimping Your Own Network Cables • Straight-Through Cabling • Cross-Over Cabling E-4 on the next page for more detailed informa- tion on straight-through and crossover cabling. Figure E-2 ® Cable/DSL Router with QoS and 8-Port Switch Figure E-3 Figure E-4...

  • Page 49: Appendix F: Finding The Mac Address And Ip Address For Your Ethernet Adapter

    Note: The MAC address is also called the Adapter Address in Windows 95, 98, and Me. The MAC address/Adapter Address is what you will use for the Router’s MAC Address Cloning or MAC Filtering. The example in Figure F-3 shows the IP address of your Ethernet adapter as 192.168.1.100.
  • Page 50 (See Figure F-6.) Click on Apply when finished. When entering information for MAC Address Cloning, type the 12-digit MAC address (see Figure F-7). Click on Apply when finished. Cable/DSL Router with QoS and 8-Port Switch ® Figure F-6 Figure F-7...

  • Page 51: Appendix G: Snmp Functions

    EtherFast Cable/DSL Router, to the workstation console used to oversee the network. The Router then returns 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.).

  • Page 52: Appendix I: Warranty Information

    Internet addresses below. Sales Information Technical Support RMA Issues Email Web site FTP site Cable/DSL Router with QoS and 8-Port Switch ® ® Cable/DSL Router, contact Linksys Technical Support at one of the 800-546-5797 (1-800-LINKSYS) 800-326-7114 949-271-5461 949-265-6655 support@linksys.com http://www.linksys.com ftp://ftp.linksys.com...
  • Page 53 © Copyright 2003 Linksys, All Rights Reserved.

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