Router’s Back Panel, Router’s Front Panel LEDs | Linksys WRT51AB

Instant Wireless® Series

Chapter 2: Getting to Know the Dual-Band Wireless A+B Broadband Router

The Router’s Back Panel

	Figure 2-1
The Router’s ports are located on the Router’s back panel.
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.
Ports 1-4	These four LAN (Local Area Network) ports con-
	nect 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.
Power	The Power port is where you will connect the power
	adapter.

Dual-Band Wireless A+B Broadband Router

The Reset Button

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.

This will reboot the Router while keeping all of the Router’s settings.

2.If you are experiencing extreme problems with the Router and have tried all other troubleshooting measures, press the Reset Button and hold it down for 10 seconds.

This will restore factory defaults and clear all of the Router’s settings, including settings such as a new password or wireless settings.

The Router’s Front Panel LEDs

Figure 2-2

The Router’s LEDs display information about the Router’s status.

Power	Green. The Power LED lights up when the Router is powered
	on.
Diag	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.”

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Linksys WRT51AB manual Getting to Know the Dual-Band Wireless A+B Broadband Router, Router’s Back Panel

Contents

Dual-Band Wireless A+B Broadband Router Copyright & Trademarks Table of Contents Introduction Common Problems and Solutions Frequently Asked QuestionsEnvironmental 127 What’s an IP Address? FeaturesRouter’s Functions IP Addresses Router Setup Overview Dhcp Dynamic Host Configuration Protocol ServersDynamic IP Addresses Router’s Back Panel Getting to Know the Dual-Band Wireless A+B Broadband RouterRouter’s Front Panel LEDs Internet Indicators LAN IndicatorsProceed to Connect the Router Connect the Router Wired Connection to a PCOverview Wireless Connection to a PC Configure the PCs Go to Configure the Router’s Basic Settings Configuring Windows 98 and Millennium PCs Configuring Windows 2000 PCs Configuring Windows XP PCs Configure the Router’s Basic Settings Enter the Internet IP Address Automatic Configuration DhcpEnter the Default Gateway Static or Fixed IP Address Router’s Web-based Utility How to Access the Web-based Utility Setup Automatic Configuration Dhcp Static IP Pptp 5GHz, 802.11a 5GHz, 802.11a WEP 4GHz, 802.11b WEP Status Password LAN Dhcp Help Log Advanced Tabs 5GHz, 802.11a Advanced Wireless 802.1x Configuration Radius Server Filters Private IP Filter Private MAC Filter To set up a filter11-20 , 21-30 , 31-40 , or 41-50 from Port Forwarding Applications External Port TCP Protocol UDP Protocol Click the Delete This Entry button Routing DMZ Host MAC Address Clone For Windows NT Appendix a TroubleshootingCommon Problems and Solutions Need to set a static IP address on a PC Want to test my Internet connection For Windows XPFor Windows 98, Me, 2000, and XP TCP UDP Need to set up a server behind my Router Can’t get the Internet game, server, or application to work My DSL service’s PPPoE is always disconnecting To start over, I need to set the Router to factory defaultNeed to upgrade the firmware Firmware upgrade failed, and/or the Diag LED is flashing Click the Advanced = Filters tab Frequently Asked Questions How can I block corrupted FTP downloads? Does the Router support ICQ send file? What is the Ieee 802.11b standard? What is DMZ Hosting?What are the advanced features of the Router? What is the Ieee 802.11a standard? What is roaming? What Ieee 802.11b features are supported?What is ad-hoc mode? What is infrastructure mode? How do I resolve issues with signal loss? What is WEP?What is a MAC Address? How do I reset the Router? Step One Pinging an IP Address Appendix B How to Ping Your ISP’s E-mail & Web Addresses Step Two Pinging for a Web Address Appendix C Configuring Wireless SecurityBackground WEP Encryption 802.1x Authentication Figure C-2 MD5 Authentication for Windows XP Figure C-5 Figure C-9 Digital Certificate Installation Figure C-13 Click Install this certificate Figure C-18 TLS Authentication for Windows XP Figure C-21 For Windows 95, 98, and Me Figure C-25 For Windows NT, 2000, and XP Figure D-3 Appendix E Glossary 111 113 115 117 119 121 123 125 Environmental Appendix F SpecificationsOne 10/100 RJ-45 Port for Cable/DSL Modem Category 5 Ethernet Network Cable or better Web site FTP site Appendix G Warranty InformationSales Information Technical Support RMA Issues Fax Appendix H Contact Information Copyright 2002 Linksys, All Rights Reserved