Linksys RTP300 manual Networking Basics

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Broadband Router with 2 Phone Ports

If you use the Router to share your cable or DSL Internet connection, contact your ISP to find out if they have assigned a static IP address to your account. If so, you will need that static IP address when configuring the Router. You can get the information from your ISP.

A dynamic IP address is automatically assigned to a device on the network. These IP addresses are called dynamic because they are only temporarily assigned to the PC or other device. After a certain time period, they expire and may change. If a PC logs onto the network (or the Internet) and its dynamic IP address has expired, the DHCP server will assign it a new dynamic IP address.

A DHCP server can either be a designated PC on the network or another network device, such as the Router. By default, the Router’s Internet Connection Type is Obtain an IP automatically (DHCP).

The PC or network device obtaining an IP address is called the DHCP client. DHCP frees you from having to assign IP addresses manually every time a new user is added to your network.

For DSL users, many ISPs may require you to log on with a user name and password to gain access to the Internet. This is a dedicated, high-speed connection type called Point to Point Protocol over Ethernet (PPPoE). PPPoE is similar to a dial-up connection, but PPPoE does not dial a phone number when establishing a connection. It also will provide the Router with a dynamic IP address to establish a connection to the Internet.

By default, a DHCP server (on the LAN side) is enabled on the Router. 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. To disable DHCP on the Router, see the Basic Setup section in “Chapter 5: Configuring the Router.”

dynamic ip address: a temporary IP address assigned by a DHCP server.

dhcp (dynamic host configuration protocol): a protocol that lets one device on a local network, known as a DHCP server, assign temporary IP addresses to the other network devices, typically computers.

6	Chapter 2: Networking Basics
	The Use of IP Addresses

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Contents Broadband Router Division of Cisco Systems, IncPage Word definition How to Use this GuideCopyright and Trademarks Broadband Router with 2 Phone Ports Table of Contents Broadband Router with 2 Phone Ports 13 Access Restrictions Tab Filter Back PanelBroadband Router with 2 Phone Ports Introduction WelcomeWhat’s in this Guide? Introduction What’s in this Guide? Broadband Router with 2 Phone Ports Use of IP Addresses Networking BasicsAn Introduction to Local Area Networks Networking Basics Getting to Know the Router Back PanelPower Front PanelConnecting the Router OverviewConnect the Power Connecting the Router to Your Existing Router Connect the Existing Router Placement Options Wall-Mount Option Configuring the Router OverviewSecurity SetupAccess Restrictions Status AdministrationApplications & Gaming How to Access the Web-based Utility VoiceInternet Connection Type Setup Tab Basic SetupInternet Setup Obtain an IP automaticallyStatic IP Packet a unit of data sent over a network Network SetupOptional Settings Network Address Server Settings Dhcp Router IPSetup Tab Ddns DdnsDynDNS.org TZO.comSetup Tab MAC Address Clone MAC CloneSetup Tab Advanced Routing Advanced Routing10 Routing Table Entry List Security Tab Firewall Web FiltersSecurity Tab VPN Passthrough VPN PassthroughFilter Port Range Access Restrictions Tab FilterFilter IP Address Range Filter MAC AddressBlock WAN Requests Access Restrictions Tab Device Access Control Access ControlPort Range Applications & Gaming Tab Port Range ForwardingPort Range Forwarding Triggered Range Applications & Gaming Tab Port TriggeringPort Triggering Forwarded Range Applications & Gaming Tab DMZ DMZApplications & Gaming Tab QoS IP QoS20 QoS Create Rule Local Router Access Administration Tab ManagementRouter Password UPnPAdministration Tab Log LogAdministration Tab Factory Defaults Factory DefaultsTraceroute Test Administration Tab DiagnosticsPing Test Status Tab Router InformationClick the Refresh button to update the on-screen information Status Tab Local Network Local NetworkLine2 Status Status Tab VoiceLine1 Status Voice Tab 31 Voice TabConfiguring the Router Appendix a Troubleshooting Common Problems and SolutionsFor Windows 98 and Millennium Need to set a static IP address on a PCFor Windows For Windows XPWant to test my Internet connection For Windows XP Configuring the Router for details Am not able to access the Router’s Web-based Utility Setup Need to set up a server behind my Router Application Start and End Protocol IP Address Enabled TCPCan’t get the Internet game, server, or application to work Broadband Router with 2 Phone Ports For Netscape 4.7 or higher To start over, I need to set the Router to factory defaultFor Microsoft Internet Explorer 5.0 or higher My DSL service’s PPPoE is always disconnecting Need to use port triggering Can I make calls if my Internet connection is down? Frequently Asked QuestionsHow do I make a phone call? Can I make calls while I’m browsing the Internet?Where is the Router installed on the network? Does the Router support IPX or AppleTalk?How can I block corrupted FTP downloads? Will the Router function in a Macintosh environment? If all else fails in the installation, what can I do?What is DMZ Hosting? Which modems are compatible with the Router? What is a MAC Address?How many ports can be simultaneously forwarded? How can I check whether I have static or Dhcp IP addresses?How do I reset the Router? Figure B-1 IP Configuration Screen Windows 98 or Me InstructionsWindows 2000 or XP Instructions For the Router’s Web-based UtilityNetwork Neighborhood/My Network Places Appendix C Windows HelpShared Resources Appendix C Windows Help Appendix D Glossary Appendix D Glossary Broadband Router with 2 Phone Ports Broadband Router with 2 Phone Ports Broadband Router with 2 Phone Ports Broadband Router with 2 Phone Ports Appendix E Specifications Warranty Year Limited Storage HumidityAppendix F Warranty Information Limited WarrantyAppendix F Warranty Information Appendix G Regulatory Information FCC StatementIndustry Canada Statement Appendix H Contact Information Appendix H Contact Information