Linksys BEFCMUH4 Quick Manual
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Linksys BEFCMUH4 Quick Manual

Cable gateway with 4-port switch/usb and 802.11b wireless-ready
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Linksys BEFCMUH4
Cable Gateway with 4-Port
Switch/USB and 802.11b
0
Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready
Wireless-Ready
Quick Guide
COPYRIGHT & TRADEMARKS
Copyright 2002 RCA, All Rights Reserved. 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.
FCC STATEMENT
The Linksys BEFCMUH4 has been tested and complies with
the specifications for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interface in a
residential installation. This equipment generates, uses, and
can 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 measure:
• Reorient or relocate the receiving antenna
• Increase the separation between the equipment of devices
• Connect the equipment to an outlet other than the receiver
• Consult a dealer or an experienced radio/TV technician for
assistance

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Summary of Contents for Linksys BEFCMUH4

  • Page 1 FCC STATEMENT The Linksys BEFCMUH4 has been tested and complies with the specifications for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interface in a residential installation.

  • Page 2: Table Of Contents

    ......................... 2 VERVIEW ....................2 OFTWARE EATURES ..................4 INIMUM EQUIREMENTS ....................4 ACKAGE ONTENTS CHAPTER 2: USING THE LINKSYS BEFCMUH4 ..........6 BEFCMUH4’ ............... 6 INKSYS ANEL BEFCMUH4’ ............. 7 INKSYS RONT ANEL CHAPTER 3: CONNECT THE GATEWAY ............9 .........................

  • Page 3: Chapter 1: Introduction

    Now your entire wireless network can enjoy blazing broadband Internet connections supported by its robust switched backbone. With the dual-function speed and power of the Linksys BEFCMUH4, your network will take off at speeds faster than you ever imagined possible. Software Features DOCSIS Features Cable Modem (CM) is 1.0 and non 1.1 upgradeable...
  • Page 4 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready USB Features OS (Win2K, XP, WinME) supported for USB interface Wireless Features Supports at least one beacon/DTIM interval of within the range 20-1000κμs Supports reception of fragmented packets Supports reception of RTS and generation of CTS...

  • Page 5: Minimum Requirements

    Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready NAT Requirements The implementation of NAT must allow for specific port redirection. Listed below are applications supported. H.323 Quake Blizzard games Chat ALG Real Audio/Video CUSEEME Netmeeting MS Games but not with game zone...
  • Page 6 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready {1} Cable Modem {1} AC Power adapter {1} CAT.5 Ethernet cable {RJ-45} {1} USB cable {1} User’s Manual...

  • Page 8: S Front Panel

    Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready the Gateway’s data and restore the factory defaults. This should be done only if you are experiencing heavy routing problems, and only after you have exhausted all of the other troubleshooting options. By resetting the Gateway, you run the risk of creating conflicts between your PCs’...
  • Page 9 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready port. 10/100 Green. Steady on when a successful 100Mbps connection is made through the corresponding port. The WAN indicators Cable Green. Steady on when cable is registered and ready to transfer data. Blinking when no downstream RF carrier present.

  • Page 10: Chapter 3: Connect The Gateway

    Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready Chapter 3: Connect the Gateway Overview Unlike a simple hub or switch, the Gateway’s setup consists of more than simply plugging hardware together. You will have to configure your networked PCs to accept the IP addresses that the Gateway assigns them (if applicable), and you will also have to configure the Gateway with setting(s) provided by your Internet Service Provider (ISP).
  • Page 11 The LED will turn off when the self-test is complete. 5. Power on the network devices that connected to the Linksys BEFCMUH4. The Hardware Installation is complete. Continue to the next page to configure your PCs with Linksys BEFCMUH4.

  • Page 12: Chapter 4: Configure Your Pcs

    Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready Chapter 4: Configure Your PCs Overview The instructions in this chapter will help you configure each of your computer to be able to communicate with the Gateway. To do this, you need to configure your PC’s network settings to obtain an IP (or TCP/IP) address automatically (called DHCP).
  • Page 13 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready 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 work TCP/IP appears by itself, select that line.

  • Page 14: Configuring Windows 2000 Pcs

    Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready 4. Now click the Gateway tab to ensure that the Installed Gateway field is left blank. Click the OK button. 5. Click the OK button again. Windows may ask you for the original Windows installation disk or additional files.

  • Page 15: Configuring Windows Xp Pcs

    Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready 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. Select Internet Protocol (TCP/IP), and click the Properties button.

  • Page 16: Chapter 5: Configure The Gateway

    Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready Chapter 5: Configure the Gateway Configuring the Linksys BEFCMUH4 This chapter will show you how to configure the Gateway to function in your network and gain access to the Internet through your Internet Service Provider (ISP).
  • Page 17 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready LAN IP Address: The value for the Gateway’s IP address is shown on the Setup screen. The default value is 192.168.100.1. Leave these settings alone. Host Name and Domain Name: These fields allow you to provide a host name and domain name for the Gateway.
  • Page 18 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready can change the access priviledge and restore factory default of the Gateway. Also, you can enable/disable the DHCP Server function. IMPORTANT: If you have previously enabled any Internet-Sharing Proxy server software on any of your PCs, you must disable it now.

  • Page 19: Appendix A: Troubleshooting

    Common Problems and Solutions This section provides possible solutions to problems regarding the installation and operation of the Linksys BEFCMUH4. If your situation is described here, the problem should be solved by applying the corresponding solution. If you can’t find an answer here, please contact with your local dealer.
  • Page 20 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready Enter the Host and Domain names (e.g., Johnson for Host and home for Domain). Enter the DNS entry provided by your ISP. If your ISP has not provided the DNS IP address, contact your ISP to get that information or go to its website for the information.
  • Page 21 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready D. Select Specify an IP address, and enter a unique IP address that is not used by any other computer on the network connected to the Gateway. You can only use an IP address in the ranges 192.168.100.2 to 192.168.100.9 and 192.168.100.42 to 192.168.100.254.
  • Page 22 A. Check your TCP/IP settings. For Windows 95, 98, and Me: Refer to the “Configuring Your PCs to Connect to the Linksys BEFCMUH4” section of “Connecting the Linksys BEFCMUH4 to Your Network”. Make sure Obtain IP address automatically is selected in the settings.
  • Page 23 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready Protocol (TCP/IP), and click the Properties button. Make sure that Obtain an IP address automatically and Obtain DNS server address automatically are selected. • Click the OK button in the Internet Protocol (TCP/IP) Properties window, and click the OK button in the Local Area Connection Properties window.
  • Page 24 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready 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 the Internet. If you can not open a web page, try the ping command from a different computer to verify that your original computer is not the cause of the problem.
  • Page 25 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready 5. I need to set up a server behind my Gateway. To use a server like a web, ftp, or mail server, you need to know the respective port numbers they are using. For example, port 80 (HTTP) is used for web, port 21 (FTP) is used for FTP, and port 25 (SMTP outgoing) and port 110 (POP3 incoming) are used for the mail server.
  • Page 26 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready D. Enter the IP address of the PC or network device that you want the port server to go to. For example, if the web server’s Ethernet adapter IP address is 192.168.100.2, you would enter 2 in the field provided. The 0 is to disable port service.
  • Page 27 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready to Basic => Security page. B. Enter a different password in the Password field, and enter the same password in the second field to confirm the password. C. Click the Apply button. 9. I am a PPPoE user, and I need to remove the proxy settings or the dial-up pop-up window.
  • Page 28 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready A. To connect to the Gateway, go to the web browser, and enter http://192.168.100.1 or the IP address of the Gateway. B. Enter the password, if asked. (The default password is admin.) C. Click the Advanced => Port Triggering tab.
  • Page 29 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready 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. 14. The Full/Col LED keeps flickering continuously.

  • Page 30: Frequently Asked Questions

    Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready Frequently Asked Questions What is the maximum number of IP addresses that the Gateway will support? The Gateway will support up to 253 IP addresses. Is IPSec Pass-Through supported by the Gateway? Yes, it is a build-in feature that the Gateway automatically enables.
  • Page 31 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready (to match the mapped port above) and ServerName to the IP assigned to the Gateway from your ISP. Can multiple gamers on the LAN get on one game server and play simultaneously with just one public IP address? It depends on which network game or what kind of game server you are using.
  • Page 32 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready 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.

  • Page 33: Appendix B: Glossary

    Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready Appendix B: Glossary 10BaseT – An Ethernet standard that uses twisted wire pairs. 100BaseTX – IEEE physical layer specification for 100 Mbps over two pairs of Category 5 UTP or STP wire. Adapter – Printed circuit board that plugs into a PC to add to capabilities or connectivity to a PC.
  • Page 34 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready new IP address must be entered. DHCP lets a network administrator supervise and distribute IP addresses from a central point and automatically sends a new IP address when a computer is plugged into a different place in the network.
  • Page 35 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready devices that serve multiple users, such as servers and printers, are usually assigned static IP address. Ethernet – IEEE standard network protocol that specifies how data is placed on and retrieved from a common transmission medium. Has a transfer rate of 10 Mbps.
  • Page 36 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready Gateway – A device that interconnects networks with different, incompatible communications protocols. Hub – The device that serves as the central location for attaching wires from workstations. Can be passive, where there is no amplification of the signals; or active, where the hubs are used like repeaters to provide an extension of the cable that connects to a workstation.
  • Page 37 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready and companies access to the Internet and other related services such as Web site 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 resources of a single processor or server within a small geographic area (for example, within an office building).
  • Page 38 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready provides authentication (username and password) in addition to data transport. A PPPoE session can be initiated by either a client application residing on a PC, or by client firmware residing on a modem or router.
  • Page 39 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready Switch – 1. A data switch connects computing devices to host computers, allowing a large number of devices to share a limited number of ports. 2. A device for making, breaking, or changing the connections in an electrical circuit.
  • Page 40 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready 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.

  • Page 41: Appendix C: Installing The Tcp/Ip Protocol

    Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready Appendix C: Installing the TCP/IP Protocol Follow these instructions to install the TCP/IP protocol on one of your PCs only after a network card has been successfully installed inside the PC. These instructions are for Windows 95, Windows 98, and Windows Me. For TCP/IP setup under Windows NT, 2000, and XP, see your Windows documentation.
  • Page 42 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready 4. Double-click on Protocol. 5. Highlight Microsoft under the list of manufacturers. 6. Find and double-click TCP/IP in the list to the right (see Figure D-2). Figure D-2 7. After a few seconds, the main Network window will appear. The TCP/IP...
  • Page 43 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready Figure D-3 8. Click the OK button. Windows may ask for original Windows installation files. Supply them as needed, e.g., c:\windows\options\cabs, D:\win98, D:\win95, D:\win9x. 9. Windows will ask you to restart the PC. Click the Yes button.

  • Page 44: Appendix D: Finding The Mac Address And Ip Address For Your Ethernet Adapter

    Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready Appendix D: Finding the MAC Address and IP Address for Your Ethernet Adapter This section describes how to find the MAC address for your Ethernet adapter. You can also find the IP address of your computer’s Ethernet adapter. The IP address is used for filtering, forwarding, and DMZ.
  • Page 45 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready 3. Write down the Adapter Address as shown on your computer screen (see Figure E-3). This is the MAC address for your Ethernet adapter and will be shown as a series of numbers and letters.
  • Page 46 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready For Windows NT, 2000, and XP: The following steps show an alternative way of obtaining the MAC address and IP address for your Ethernet adapter. 1. Click on Start and Run. In the Open field, enter cmd. Press the Enter key or click the OK button.

  • Page 47: Appendix E: Specfications

    Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready Appendix E: Specfications Cable Interface F type female 75ohm 4 10/100 BASE-T 1 USB 1.1 Connector Type B 1 IEEE 802.11b (2.4 GHz Unlicensed ISM radio band) 140 MHz MIPS32-ISA SDRAM 32Mb 16Mb...
  • Page 48 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready Appendix F : Warning Statement 15.21 CAUTION: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. Prohibition of co-location This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter.
  • Page 49 Linksys BEFCMUH4 Cable Gatewayr + 802.11b Wireless-Ready Caution Statement of the FCC Radio Frequency Exposure This Wireless LAN radio device has been evaluated under FCC Bulletin OET 65C and found compliant to the requirements as set forth in CFR 47 Sections 2.1091, 2.1093, and 15.247(b)(4) addressing RF Exposure from radio frequency devices.

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