Cisco Systems Cisco 831 manual LED Functions, Color Function

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Chapter 1 Product Overview

Router Overview

LED Functions

Table 1-3summarizes the functions of the LEDs on the routers.

Table 1-3 Functions of LEDs on the Cisco 831 Router and SOHO 91 Router

LED	Color	Function

PWR_OK	Green	On when DC power is being supplied to the router. The light blinks if an error
		occurs during boot-up.

WAN_LED_OK	Green	On when WAN Ethernet carrier detects status and connects to the digital
		subscriber line access multiplexer (DSLAM) successfully.

WAN_LED_RxD	Green	Blinks when WAN Ethernet receives data.

WAN_LED_TxD	Green	Blinks when WAN Ethernet transmits data. Off when no data is being
		uploaded.

E1 (port 1 of	Green	On when Ethernet 1 connects to the Ethernet interface successfully. Blinks
built-in switch)		when Ethernet 1 receives or sends data, or when data passes through
Status		Ethernet 1.

E2 (port 1 of	Green	On when Ethernet 2 connects to the Ethernet interface successfully. Blinks
built-in switch)		when Ethernet 2 receives or sends data, or when data passes through
Status		Ethernet 2.

E3 (port 1 of	Green	On when Ethernet 3 connects to the Ethernet interface successfully. Blinks
built-in switch)		when Ethernet 3 receives or sends data, or when data passes through
Status		Ethernet 3.

E4 (port 1 of	Green	On when Ethernet 4 connects to the Ethernet interface successfully. Blinks
built-in switch)		when Ethernet 4 receives or sends data, or when data passes through
Status		Ethernet 4.

LAN_RxD	Green	Blinks when built-in Ethernet switch receives data from the WAN port.

LAN_TxD	Green	Blinks when built-in Ethernet switch transmits data to the WAN port.

		Cisco 831 Router and SOHO 91 Router Hardware Installation Guide

	78-14784-02			1-5
	78-14784-02			1-5

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Contents

Corporate Headquarters Page Copyright 2005 Cisco Systems, Inc. All rights reserved Page N T E N T S Troubleshooting Specifications and Cables A-5 Page Organization AudienceXii ConventionsXiii Cisco.com Related DocumentationObtaining Documentation Ordering Documentation Documentation FeedbackDocumentation DVD Psirt Reporting Security Problems in Cisco ProductsCisco Product Security Overview Cisco Technical Support Website Obtaining Technical AssistanceXviii Submitting a Service RequestObtaining Additional Publications and Information Definitions of Service Request SeverityPreface Obtaining Additional Publications and Information Product Overview RAM Sdram FeaturesFeature Description 10BASE-T/100BASE-TSoho Router Built-In Switch WAN Ethernet PortRouter Overview Front PanelCisco 831 Back Panel Back PanelColor Function LED FunctionsProduct Overview Router Overview Safety Preparing for InstallationBefore installing the router, read the following warnings Installation Preparing for Installation Preventing Electrostatic Discharge Damage Ordered Separately Unpacking the BoxPreventing Damage to the Router Installing the RouterConnecting a Server, PC, or Workstation Connecting a Server, PC, or Workstation Connecting an External Ethernet Switch Optional Connecting to an Ethernet Switch Connecting a Broadband Modem Connecting to the InternetConnecting a Terminal or PC to the Console Port Connecting a Terminal or PC to the Console Port Connecting the AC AdapterConnecting the AC adapter Connecting the Console Port to an Async Modem Connect Console Port to an Async Modem Checking the PC Configuration Verifying Router Operation Power/Link LEDs to Check Normal PatternsMounting on a Wall Mounting the RouterMounting on a Table Wall-Mounting Brackets Bottom of Router Mounting Router on Wall Connecting to a Website Starting the Crws Software What to Do If You Cannot Connect to a WebsiteInstallation What to Do If You Cannot Connect to a Website Installation What to Do If You Cannot Connect to a Website Before You Call Your Cisco Reseller TroubleshootingSymptom Problem Solutions Problems During First StartupServer, PC, or Workstation section on ComputerProblems After Router Is Running Environmental Operating Ranges System SpecificationsDescription Design Specification Physical Dimensions Laws and regulations Description Design Specification Router PowerTX+ LAN PortPin Function RX+Cabling Specifications Console Connector Pinouts10BASE-T Ethernet Cable SpecificationsMaximum Cable Distance Type CategoryAppendix a Specifications and Cables Cabling Specifications Numerics IN-2 IN-3 IN-4