Cisco Systems 815 manual Recovering a Lost Password, Determining the Configuration Register Value

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Chapter 3 Troubleshooting

Recovering a Lost Password

Recovering a Lost Password

This section describes how to recover a lost enable password and how to enter a new enable secret password.

Password recovery consists of the following major processes:

•Determining the Configuration Register Value

With this process, you determine the configuration of the router, so that you may restore the configuration after the password is recovered.

•Resetting the Router

With this process, you reconfigure the router to its initial startup configuration. You then display the enable password, if one is used.

•Resetting the Password

If you are using an enable secret password, you enter a new password with this process. You then restore the router to its previous configuration.

•Resetting the Configuration Register Value

If you are using an enable password, you use this process to restore the router to its previous configuration.

Note See the “Hot Tips” section on Cisco.com for additional information on replacing enable secret passwords.

Determining the Configuration Register Value

Follow these steps to determine the configuration register value:

Step 1 Connect an ASCII terminal or a PC that is running a terminal-emulation program to the console port on the router. See the “Connecting a PC” section in Chapter 2, “Installation.”

Step 2 Configure the terminal to operate at 9600 baud, 8 data bits, no parity, 1 stop bit and no flow control.

Step 3 Reboot the router by pressing the power switch to the off ( 0 ) position and then to the on ( ) position.

	Cisco 815 Integrated Services Router Hardware Installation Guide
3-2	OL-9558-01

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Contents Corporate Headquarters Page Cisco Systems, Inc. All rights reserved Page N T E N T S Installation Installing and Removing a Dimm C-4 ViiViii Audience and Scope OrganizationRelated Documentation Conventions Xii Xiii Xiv Page Xvi Xvii Commands XviiiAccessibility Obtaining DocumentationCisco.com XixProduct Documentation DVD Ordering Documentation Documentation Store in the Cisco Marketplace at this URLCisco Product Security Overview Documentation FeedbackXxi Reporting Security Problems in Cisco Products XxiiCisco Technical Support & Documentation Website Obtaining Technical AssistanceXxiii Definitions of Service Request Severity Submitting a Service RequestXxiv Obtaining Additional Publications and Information XxvXxvi Key Features OverviewFeature Description Product Serial Number Location CiscoBack Panel Ports and LEDs Back Panel Ports and LEDsLabel/Color Description Front Panel LEDs WIC0 OKLED Label Color Description Router Memory Types of MemoryAmounts of Memory 815# show versionItems Included with the Cisco 815 Integrated Services Router Unpacking the RouterInstallation Before Installing the RouterConnecting the Router to Your Local Network Installation Connecting the Router to Your Local Network Connecting the Router to the Local Network Connecting Power to the Router Connecting the Power SupplyVerifying Your Installation Optional Installation Procedures Connecting a PCConnecting the Console Cable to the Router Connecting a Modem AUX port RJ-45 DB-9-to-DB-25 adapter Console cable ModemStacking the Router Assembling Stacking Clip and Fastener Stacking the Router Back View Unstacking the Router Unstacking the RouterOL-9558-01 Troubleshooting Contacting Your Cisco ResellerRecovering a Lost Password Determining the Configuration Register ValueConfiguration register is 0x2102 815# Resetting the Router Press Return. The following prompt appearsPrompt changes to the privileged Exec prompt Resetting the Password Resetting the Configuration Register ValueProblem Solving OK LED DiagnosticsTroubleshooting WICs and Cables Number of Blinks MeaningExample WIC-4ESW Troubleshooting the Power System Symptom Possible Causes Technical Specifications Operating Specifications Cabling Specifications Ethernet CablesEthernet Network Cabling Guidelines 10BASE-T 100BASE-TXSignal RJ-45 Pin DB-9 Pin DB-25 Pin Console Cable and AdapterOL-9558-01 Safety Warnings Opening the Chassis Figure C-1 Removing the Chassis Screws Installing and Removing a Dimm Locating ModulesRemoving a Dimm Release the latches Remove the DimmInstalling a Dimm Insert the Dimm Latches rotate to closed positionInstalling a VPN Module Screw StandoffFigure C-7 VPN Module Location Figure C-9 Retention Clip Location Figure C-10 Aligning the Retention Clip Center Post Figure C-11 Attaching the Retention Clip to the Motherboard Figure C-12 Securing the Standoff to the Router Motherboard Closing the Chassis Figure C-13 Attaching the Router Cover NumericsC IN-1ETH COL LED IN-2Dimm C-4 IN-3IN-4