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Cisco 805

Recovering a Lost Enable Password

This appendix describes how to recover a password that you configured with the enablecommand(enable password).

Note You can recover a lost enable password, but not a password that you configured with the enablesecretcommand (enable secret password). This password is encrypted and must be replaced with a newenable secret password. See the "Hot Tips" section on Cisco Connection Online (CCO) for information onreplacing enable secret passwords.

Follow these steps to recover a lost enable password:

Step 1 Connect an ASCII terminal or a PC running a terminal emulation program to the Consoleport. For more information, see the Cisco 805 Router Hardware Installation Guide.

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

Step 3 Reboot the router.

Step 4 From user EXEC mode, display the existing configuration register value:

Router> show version

Step 5 Record the setting of the configuration register. The setting is usually 0x2102 or 0x102.

Step 6 Record the break setting.

Break enabledbit 8 is set to 0.

Break disabled (default setting)bit 8 is set to 1.

Note To enable break, enter the config-register 0x01 global configuration command.

Step 7 Do one of the following:

If break is enabled, go toStep 8.

If break is disabled, turn the router to STANDBY, wait 5 seconds, and turn it to ON

again. Before the terminal displays Boot......, press Escapeor Control-C. Theterminal displays the ROM monitor prompt (boot #). Go toStep 9.

Note Some terminal keyboards have a key labeled Break. If your keyboard does not have a Break key, refer tothe documentation that came with the terminal for instructions on how to send a break.

Step 8 Send a break. The terminal displays the following prompt:

boot#

Step 9 Reset the configuration register:

boot# set ios-conf=142
http://www.cisco.com/en/US/docs/routers/access/800/805/software/configuration/guide/pwrecov.html#wp4734http://www.cisco.com/en/US/docs/routers/access/800/805/software/configuration/guide/pwrecov.html#wp4734http://www.cisco.com/en/US/docs/routers/access/800/805/software/configuration/guide/pwrecov.html#wp4734http://www.cisco.com/en/US/docs/routers/access/800/805/software/configuration/guide/pwrecov.html#wp4738http://www.cisco.com/en/US/docs/routers/access/800/805/software/configuration/guide/pwrecov.html#wp4738http://www.cisco.com/en/US/docs/routers/access/800/805/software/configuration/guide/pwrecov.html#wp4738http://www.cisco.com/en/US/docs/routers/access/800/805/software/configuration/guide/pwrecov.html#wp4738http://www.cisco.com/en/US/docs/routers/access/800/805/software/configuration/guide/pwrecov.html#wp4734


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Step 10 Initialize the router:

boot# boot [flash]

The router cycles its power, and the configuration register is set to 0x142. The routeruses the boot ROM system image, indicated by the system configuration dialog:

--- System Configuration Dialog ---

Step 11 Enter noin response to the prompts until the following message is displayed:

Press RETURN to get started!

Step 12 Press Return. The following prompt appears:

router>

Step 13 Enter privileged EXEC mode:

router> enable

The prompt changes to the privileged EXEC prompt:

router#

Step 14 Display the enable password in the configuration file:

router# show startup-config

Step 15 Enter configuration mode:

router# configure terminal

Step 16 Reset the configuration register:

router# config-register value

Specify the value that you recorded inStep 5(usually 0x2102 or 0x102).

Step 17 Press Ctrl-Zto exit configuration mode.

Note To return to the configuration being used before recovering the lost enable password, do not save theconfiguration changes before rebooting the router.

Step 18 Reboot the router, and enter the recovered password.
http://www.cisco.com/en/US/docs/routers/access/800/805/software/configuration/guide/pwrecov.html#wp4717http://www.cisco.com/en/US/docs/routers/access/800/805/software/configuration/guide/pwrecov.html#wp4717http://www.cisco.com/en/US/docs/routers/access/800/805/software/configuration/guide/pwrecov.html#wp4717http://www.cisco.com/en/US/docs/routers/access/800/805/software/configuration/guide/pwrecov.html#wp4717


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Document ID: 12732

DF

ownload

Password

Recovery

Procedure

for the

Cisco 801,802, 803,

804, 805,

811, and

813 Series

Routers

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Conventions

Step-by-Step Procedure

Sample Output Example

Example of Enable Password Recovery

Example of Password Replacement

Cisco Support Community - Featured Conversations

Related Information

Introduction

This document describes how to recover the enable passwordand the enable secretpasswords. Thesepasswords protect access to privileged EXEC and configuration modes. The enable passwordpasswordcan be recovered, but theenable secretpassword is encrypted and must be replaced with a newpassword. Use the procedure described in this document in order to replace the enable secretpassword.

Refer toPassword Recovery Procedure for the Cisco 806, 826, 827, 828, 831, 836 and 837 Series Routersinorder to recover a password on Cisco 806, 826, 827, 828, 831, 836 and 837 Series Routers.

Note: You may encounter boot problems with some Cisco 800 Series Routers. Cisco 801, 802, 803, 804,805, 811, and 813 routers boot into TinyROM at power-up or after they save any configuration from theconsole port with Cisco IOS

Software Release 12.1(3) and later. Refer toField Notice: Cisco 801-805 and

Cisco 811 and 813 Boots into TinyROMfor details about the affected unit serial number and the procedurerequired in order to solve the boot problem.

Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

The information in this document is based on these hardware versions:

Cisco 801 Series Router







The information in this document was created from the devices in a specific lab environment. All of thedevices used in this document started with a cleared (default) configuration. If your network is live, makesure that you understand the potential impact of any command.

Related Products

Refer toPassword Recovery Proceduresfor information on how to recover passwords for related products.

Conventions

Refer toCisco Technical Tips Conventionsfor information on document conventions.
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Step-by-Step Procedure

Follow these steps in order to recover your password:

1. Attach a terminal or PC with terminal emulation to the console port of the router.

Use these terminal settings:

o 9600 baud rateo No parityo 8 data bitso 1 stop bito No flow control

The required console cable specifications are described inCabling Guide for Console and AUXPorts.

2. Use the power switch in order to turn off the router, and then turn the router back on.

3. Press Breakon the terminal keyboard within 60 seconds of power up in order to put the routerinto ROMMON.

If the break sequence does not work, refer toStandard Break Key Sequence Combinations DuringPassword Recoveryfor other key combinations.

4. Type setat the boot#prompt, and record the current value of the configuration register.

5.boot#set6.set baud =96007.set data-bits =88.set parity =none9.set stop-bits =1

10. set console-flags =011. set mac-address =0050.7307.C32912. set unit-ip =10.200.40.6513. set serv-ip =255.255.255.25514. set netmask =255.255.252.015. set gate-ip =10.200.40.116. set pkt-timeout =817. set tftp-timeout =1618. set boot-action =flash19. set file-name ="c800-nsy6-mw.122-10b.bin"20. set watchdog =off21. set prompt ="boot"22. set ios-conf =0x210223. !--- The ios-conf variable sets the value for the24. !--- configuration register. Record this value.25.26. Type set ios-conf = 142at the boot#prompt.

Note: The best setting is 142 if the Flash is intact. If the Flash is not installed or is erased, use141. With this setting, you can view or erase the configuration, but you cannot change thepassword.

27. Type bootat the boot#prompt in order to initialize the router.

The router reboots, but ignores the saved configuration.
http://www.cisco.com/en/US/products/hw/routers/ps332/products_tech_note09186a0080094ce6.shtmlhttp://www.cisco.com/en/US/products/hw/routers/ps332/products_tech_note09186a0080094ce6.shtmlhttp://www.cisco.com/en/US/products/hw/routers/ps332/products_tech_note09186a0080094ce6.shtmlhttp://www.cisco.com/en/US/products/hw/routers/ps332/products_tech_note09186a0080094ce6.shtmlhttp://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080174a34.shtmlhttp://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080174a34.shtmlhttp://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080174a34.shtmlhttp://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080174a34.shtmlhttp://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080174a34.shtmlhttp://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080174a34.shtmlhttp://www.cisco.com/en/US/products/hw/routers/ps332/products_tech_note09186a0080094ce6.shtmlhttp://www.cisco.com/en/US/products/hw/routers/ps332/products_tech_note09186a0080094ce6.shtml


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28. Type noafter each setup question, or press Ctrl-Cin order to skip the initial setup procedure.

29. Type enableat the Router>prompt.

Once the Router#prompt appears, you are in enable mode.

30. Type configure memoryor copy startup-config running-configin order to copy the nonvolatile

RAM (NVRAM) into memory.

Important:Do nottype copy running-config startup-configor write. These commands eraseyour startup configuration.

31. Type show running-config.

The show running-configcommand shows the configuration of the router. In this configuration,the shutdowncommand appears under all interfaces, which indicates all interfaces are currentlyshut down. In addition, the passwords (enable password, enable secret, vty, console passwords)are in either an encrypted or unencrypted format. You can reuse unencrypted passwords. Youmust change encrypted passwords to a new password.

32. Type configure terminal.

The hostname(config)#prompt appears.

33. Type enable secret in order to change the enable secretpassword. For example:

34. hostname(config)#enable secret cisco35.36. Issue the no shutdowncommand on every interface that you use.

If you issue a show ip interface briefcommand, every interface that you want to use displays upup.

37. Type config-register . Where configuration_register_settingiseither the value you recorded in step 2 or 0x2102. For example:

38. hostname(config)#config-register 0x210239.40. Press Ctrl-zor endin order to leave the configuration mode.

The hostname#prompt appears.

41. Type write memor copy running startupin order to commit the changes.42. Type reload.

Once the router reloads, the configuration register value changes from 0x142to 0x2102.

Sample Output Example

This section provides an example of the password recovery procedure. This example was created with aCisco 803 Series Router. Even if you do not use a Cisco 803 Series Router, this output provides anexample of what you should experience on your product.

Router>show versionCisco Internetwork Operating System SoftwareIOS (tm) C800 Software (C800-NSY6-MW), Version 12.2(10b),RELEASE SOFTWARE (fc1)Copyright (c) 1986-2002 by cisco Systems, Inc.

Compiled Thu 11-Jul-02 19:53 by pwadeImage text-base: 0x000F2000, data-base: 0x0086C000


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ROM: TinyROM version 1.0(3)leased uptime is 1 minuteSystem returned to ROM by power-onSystem image file is "flash:c800-nsy6-mw.122-10b.bin"

Cisco C803 (MPC850) processor (revision 1) with 52940K bytesof virtual memory.Processor board ID JAD03325506 (2953252)CPU part number 0x2100X.25 software, Version 3.0.0.Bridging software.Basic Rate ISDN software, Version 1.1.2 POTS Ports1 Ethernet/IEEE 802.3 interface(s)1 ISDN Basic Rate interface(s)12M bytes of physical memory (DRAM)8K bytes of non-volatile configuration memory

12M bytes of flash on board (8M from flash card)

Configuration register is 0x2102

!--- The router was just powercycled.

!--- At bootup a break sequence is sent to the router.

TinyROM version 1.0(3)Fri Apr 30 18:22:12 1999Copyright (c) 1998-1999 by cisco Systems, Inc.

All rights reserved.

POST ......... OK. 12MB DRAM, 8MB Flash.boot# setset baud =9600set data-bits =8set parity =noneset stop-bits =1set console-flags =0set mac-address =0050.7307.C329set unit-ip =10.200.40.65set serv-ip =255.255.255.255set netmask =255.255.252.0set gate-ip =10.200.40.1set pkt-timeout =8set tftp-timeout =16set boot-action =flashset file-name ="c800-nsy6-mw.122-10b.bin"set watchdog =offset prompt ="boot"set ios-conf =0x2102

boot# set ios-conf = 142!--You can use 0x142 or 0x2142.


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boot#boot

Booting "c800-nsy6-mw.122-10b.bin"...,Restricted Rights Legend

Use, duplication, or disclosure by the Government issubject to restrictions as set forth in subparagraph(c) of the Commercial Computer Software - RestrictedRights clause at FAR sec. 52.227-19 and subparagraph(c) (1) (ii) of the Rights in Technical Data and ComputerSoftware clause at DFARS sec. 252.227-7013.

cisco Systems, Inc.170 West Tasman DriveSan Jose, California 95134-1706

Cisco Internetwork Operating System SoftwareIOS (tm) C800 Software (C800-Y6-MW), Version12.2(10b), RELEASE SOFTWARE (fc1)Copyright (c) 1986-2002 by cisco Systems, Inc.Compiled Thu 11-Jul-02 19:53 by pwadeImage text-base: 0x000F2000, data-base: 0x0086C000

Cisco C803 (MPC850) processor (revision 1) with 52940K bytesof virtual memory.Processor board ID JAD03325506 (2953252)CPU part number 0x2100

X.25 software, Version 3.0.0.Bridging software.Basic Rate ISDN software, Version 1.1.2 POTS Ports1 Ethernet/IEEE 802.3 interface(s)1 ISDN Basic Rate interface(s)12M bytes of physical memory (DRAM)8K bytes of non-volatile configuration memory12M bytes of flash on board (8M from flash card)

--- System Configuration Dialog ---

Would you like to enter the initial configuration dialog?[yes/no]: no

Press RETURN to get started! (press Enter)

00:26:02: %SYS-5-RESTART: System restarted --Cisco Internetwork Operating System SoftwareIOS (tm) C800 Software (C800-NSY6-MW), Version 12.2(10b),RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2002 by cisco Systems, Inc.Compiled Thu 11-Jul-02 19:53 by pwade


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00:26:02: %SNMP-5-COLDSTART: SNMP agent on host Router isundergoing a cold start00:26:02: %LINK-5-CHANGED: Interface BRI0, changed state toadministratively down00:26:03: %LINEPROTO-5-UPDOWN: Line protocol on Interface

BRI0, changed state to down00:26:03: %LINK-5-CHANGED: Interface Ethernet0, changed stateto administratively down00:26:04: %LINEPROTO-5-UPDOWN: Line protocol on InterfaceEthernet0, changed stateto down

Router>enable

Router#copy startup-config running-configDestination filename [running-config]? (press Enter)

% Login disabled on line 1, until 'password' is set% Login disabled on line 2, until 'password' is set% Login disabled on line 3, until 'password' is set% Login disabled on line 4, until 'password' is set% Login disabled on line 5, until 'password' is set797 bytes copied in 2.304 secs (346 bytes/sec)

00:27:47: %LINK-3-UPDOWN: Interface BRI0:1, changed state todown00:27:47: %LINK-3-UPDOWN: Interface BRI0:2, changed state todown

00:27:48: %LINEPROTO-5-UPDOWN: Line protocol on InterfaceBRI0:1, changed state to down00:27:48: %LINEPROTO-5-UPDOWN: Line protocol on InterfaceBRI0:2, changed state to down

Note:After you copy the configuration file from NVRAM to RAM, you can perform one of theseprocedures:

Password recoveryPerform this procedure if the enablepassword (which is in plain text format)is configured.

Password replacementPerform this procedure if the enable-secretpassword (which is inencrypted format) is configured based on how the password is last configured.

Note: In order to check the format in which the password is configured in the router, use the showrunning-configcommand, and look for enable passwordorenable secret passwordin theconfiguration. For more information, seeExample of Enable Password RecoveryandExample of PasswordReplacement.

Example of Enable Password Recovery

This example output from the show running-configcommand shows that enable passwordisconfigured.

Router#show running-configBuilding configuration...

Current configuration : 820 bytes!
http://www.cisco.com/en/US/products/hw/routers/ps380/products_password_recovery09186a00800942c2.shtml#recovery_examplehttp://www.cisco.com/en/US/products/hw/routers/ps380/products_password_recovery09186a00800942c2.shtml#recovery_examplehttp://www.cisco.com/en/US/products/hw/routers/ps380/products_password_recovery09186a00800942c2.shtml#recovery_examplehttp://www.cisco.com/en/US/products/hw/routers/ps380/products_password_recovery09186a00800942c2.shtml#replacement_examplehttp://www.cisco.com/en/US/products/hw/routers/ps380/products_password_recovery09186a00800942c2.shtml#replacement_examplehttp://www.cisco.com/en/US/products/hw/routers/ps380/products_password_recovery09186a00800942c2.shtml#replacement_examplehttp://www.cisco.com/en/US/products/hw/routers/ps380/products_password_recovery09186a00800942c2.shtml#replacement_examplehttp://www.cisco.com/en/US/products/hw/routers/ps380/products_password_recovery09186a00800942c2.shtml#replacement_examplehttp://www.cisco.com/en/US/products/hw/routers/ps380/products_password_recovery09186a00800942c2.shtml#replacement_examplehttp://www.cisco.com/en/US/products/hw/routers/ps380/products_password_recovery09186a00800942c2.shtml#recovery_example


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version 12.2service timestamps debug uptimeservice timestamps log uptimeno service password-encryption!

hostname Router!boot system flash c800-nsy6-mw.122-10b.binenable password cisco

!--- Here the password isplain text. You can either maintain

!--- the same password or replace it with a new password.

!--- Output omitted.

Example of Password Replacement

This example output from the show running-configcommand shows that enable secret passwordisconfigured. As a result, password replacement can be performed as shown in this example:

Router#show running-configBuilding configuration...Current configuration : 835 bytes!version 12.2service timestamps debug uptimeservice timestamps log uptimeno service password-encryption!hostname Router!boot system flash c800-nsy6-mw.122-10b.binenable secret 5 $1$O80N$NjrO/6P5jpi0PZYzAj/vX0

!--- Password replacement is performed because

!--- the password is encrypted.

!--- Output omitted.

Router#configure terminalEnter configuration commands, one per line. End with CNTL/Z.Router(config)#enable secret letmeinRouter(config)#00:03:39: %SYS-5-CONFIG_I: Configured from console by console

Once the password recovery or replacement is done, the remaining steps are the same, as shown in thisexample:

Router#show ip interface brief


11/19

Interface IP-Address OK? Method StatusProtocolBRI0 unassigned YES TFTP administrativelydown downBRI0:1 unassigned YES unset administratively

down downBRI0:2 unassigned YES unset administrativelydown downEthernet0 10.200.40.65 YES TFTP administrativelydown downRouter#configure terminalEnter configuration commands, one per line. End with CNTL/Z.Router(config)#interface ethernet 0Router(config-if)#no shutdownRouter(config-if)#00:30:02: %LINK-3-UPDOWN: Interface Ethernet0, changed stateto up

00:30:03: %LINEPROTO-5-UPDOWN: Line protocol on InterfaceEthernet0, changed state to upRouter(config)#config-reg 0x2102Router(config)#^ZRouter#00:04:36: %SYS-5-CONFIG_I: Configured from console by consoleRouter#write memory

After you issue the config-reg 0x2102command, the new configuration register value is not immediatelyapplied. The new value is applied only after the router is reloaded. This output from the showversioncommand shows the current value (0x142) and the value that is applied after the next reload(0x2102).

Router#show versionCisco Internetwork Operating System SoftwareIOS (tm) C800 Software (C800-NSY6-MW), Version 12.2(10b),RELEASE SOFTWARE (fc1)Copyright (c) 1986-2002 by cisco Systems, Inc.Compiled Thu 11-Jul-02 19:53 by pwadeImage text-base: 0x000F2000, data-base: 0x0086C000

ROM: TinyROM version 1.0(3)leased uptime is 7 minutes

System returned to ROM by power-onSystem image file is "flash:c800-nsy6-mw.122-10b.bin"

Cisco C803 (MPC850) processor (revision 1) with 52940K bytesof virtual memory.Processor board ID JAD03325506 (2953252)CPU part number 0x2100X.25 software, Version 3.0.0.Bridging software.Basic Rate ISDN software, Version 1.1.2 POTS Ports1 Ethernet/IEEE 802.3 interface(s)

1 ISDN Basic Rate interface(s)12M bytes of physical memory (DRAM)


12/19

8K bytes of non-volatile configuration memory12M bytes of flash on board (8M from flash card)


!--- This value becomes 0x2102 at next reload.

Router#show versionCisco Internetwork Operating System SoftwareIOS (tm) C800 Software (C800-NSY6-MW), Version 12.2(10b),RELEASE SOFTWARE (fc1)Copyright (c) 1986-2002 by cisco Systems, Inc.Compiled Thu 11-Jul-02 19:53 by pwadeImage text-base: 0x000F2000, data-base: 0x0086C000

ROM: TinyROM version 1.0(3)leased uptime is 0 minutes

System returned to ROM by power-onSystem image file is "flash:c800-nsy6-mw.122-10b.bin"

Cisco C803 (MPC850) processor (revision 1) with 52940K bytesof virtual memory.Processor board ID JAD03325506 (2953252)CPU part number 0x2100X.25 software, Version 3.0.0.Bridging software.Basic Rate ISDN software, Version 1.1.2 POTS Ports

1 Ethernet/IEEE 802.3 interface(s)1 ISDN Basic Rate interface(s)12M bytes of physical memory (DRAM)8K bytes of non-volatile configuration memory12M bytes of flash on board (8M from flash card)


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ROMmon Recovery for the Cisco 2500, 3000,AS5100, and uBR900 Series Routers

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Verify the Configuration Register Value

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Related Information

Introduction

This document explains how to recover Cisco 2500, 3000, AS5100, and uBR900 Series Routers stuck inROMmon (rommon#>or >prompt).

Prerequisites

Requirements

To recover a router from ROMmon mode, the router should be physically accessible and should have aterminal connected to the console port. Recovering a router from ROMmon is not possible by telneting toany of the interfaces. You must know how tocopy the Cisco IOS software image from a TFTP server to therouter.

Components Used

The information in this document is based on the:



Cisco AS5100 Series Universal Access Server

Cisco uBR900 Series Router

The information presented in this document was created from devices in a specific lab environment. All ofthe devices used in this document started with a cleared (default) configuration. If you are working in a livenetwork, ensure that you understand the potential impact of any command before using it.

Conventions

For more information on document conventions, see theCisco Technical Tips Conventions.

Verify the Configuration Register Value

The first thing that needs to be investigated is why the router is booting up in ROMmon mode (indicated bythe "rommon # >" or ">" prompt). Determine whether the cause is due to the change of the configurationregister value, or a corrupted Cisco IOS software image.

If the router has a valid Cisco IOS software image, then simply changing the configuration value register to0x2102 will recover the router. The procedure for this is explained below.

1. If the ROMmon prompt is ">", type the following at the ROMmon prompt:

2.>o/r 0x21023.>i4.System Bootstrap, Version 11.0(10c)XB2, RELEASE SOFTWARE5.Copyright (c) 1986-2003 by cisco Systems6.2500 processor with 16384 Kbytes of main memory7.8.F3: 10021772+224116+562960 at 0x30000609.10. Restricted Rights Legend11.
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14.15. !--- Output suppressed16.17.18. .............16384K bytes of processor board System

flash (Read/Write)19.20. Press RETURN to get started!21.

hostname(boot)>

Notice that the prompt is now "router (boot)>", confirming that the router has booted up using theboot image.

Note: If the router boots up in ROMmon again, most likely the boot image is corrupt or missingand the only way to recover is by replacing the processor board System Flash or hardware.

22. The next step is to upgrade the Cisco IOS software as follows:

23. hostname(boot)>enable24. hostname(boot)#copy tftp flash25. System flash directory:26. File Length Name/status27.28. 1 2416128 c2500-is-l.123-1a.bin [invalid checksum]29.30. [2416192 bytes used, 14361024 available, 16777216

total]31. Address or name of remote host [255.255.255.255]?

172.16.1.2

32. Source file name? c2500-is-l.123-1a.bin33. Destination file name [c2500-is-l.123-1a.bin]?34. Accessing file 'c2500-is-l.123-1a.bin' on

172.16.1.2...35. Loading c2500-is-l.123-1a.bin from 172.16.1.2 (via

Ethernet0): ! [OK]36.37. Erase flash device before writing? [confirm]38.39.40. !--- Press Enter to confirm

41.

42.43. Flash contains files. Are you sure you want to erase?

[confirm]44.45.46. !--- Press Enter to confirm47.48.49. Copy 'c2500-is-l.123-1a.bin' from server50. as 'c2500-is-l.123-1a.bin' into Flash WITH erase?

[yes/no]yes


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51. Erasing device...eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

52. ee ...erased53. Loading c2500-is-l.123-1a.bin from 172.16.1.2 (via

Ethernet0): !!!!!!!!!!!!!!!!!54. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

55.56.57. !--- Output suppressed58.59.60. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!61. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!62. [OK - 16294764/16777216 bytes]

63.64. Verifying checksum... OK (0x96AA)65. Flash copy took 0:08:23 [hh:mm:ss]

hostname(boot)#

66. Use the show flashcommand to verify the newly-loaded Cisco IOS image version.

67. hostname(boot)#show flash68.69. System flash directory:70. File Length Name/status71. 1 16294764 c2500-is-l.123-1a.bin

72. [16294828 bytes used, 482388 available, 16777216total]73. 16384K bytes of processor board System flash

(Read/Write)hostname(boot)#

74. After successfully copying the Cisco IOS image to the router, make sure that you change theconfiguration register back to 0x2102 and reload the router to boot from the Cisco IOS image.

75. hostname(boot)(config)#config-register 0x210276. hostname(boot)#reload77. System configuration has been modified. Save?

[yes/no]: no

78. Proceed with reload? [confirm]79.80.81. !--- Press Enter to confirm82.83.84. *Mar 1 00:12:58.463: %SYS-5-RELOAD: Reload requested85. System Bootstrap, Version 11.0(10c)XB2, PLATFORM

SPECIFIC RELEASE SOFTWARE (fc1)86.87. Copyright (c) 1986-2003 by cisco Systems88. 2500 processor with 14336 Kbytes of main memory89.90. F3: 15405292+889440+952984 at 0x3000060


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91.92.93. !--- Output suppressed94.95.

96.

97. Press RETURN to get started!98.

hostname>

99. Use the show versioncommand to verify the configuration register value and the newly-loadedCisco IOS image version.

100.hostname>show version101.Cisco Internetwork Operating System Software102.IOS (tm) 2500 Software (C2500-IS-L), Version 12.3(1a),

RELEASE SOFTWARE (fc1)103.Copyright (c) 1986-2003 by cisco Systems, Inc.

104.Compiled Fri 06-Jun-03 07:46 by dchih105.Image text-base: 0x0307F6E8, data-base: 0x00001000106.107.ROM: System Bootstrap, Version 11.0(10c)XB2, PLATFORM

SPECIFIC RELEASE SOFTWARE108.(fc1)109.BOOTLDR: 3000 Bootstrap Software (IGS-BOOT-R), Version

11.0(10c)XB2, PLATFORM SP110.ECIFIC RELEASE SOFTWARE (fc1)111.112.Router uptime is 2 minutes113.System returned to ROM by reload114.System image file is "flash:c2500-is-l.123-1a.bin"115.116.cisco 2500 (68030) processor (revision L) with

14336K/2048K bytes of memory.117.Processor board ID 13587050, with hardware revision

00000000118.Bridging software.119.X.25 software, Version 3.0.0.120.2 Ethernet/IEEE 802.3 interface(s)121.2 Serial network interface(s)122.32K bytes of non-volatile configuration memory.

123.16384K bytes of processor board System flash (ReadONLY)

124.125.Configuration register is 0x2102

The show versioncommand output above shows that the router has loaded the new Cisco IOS imageand the configuration register value is 0x2102.

SeeSoftware Installation and Upgrade Procedure for the 1600, 2000, 2500, 3000, AS5100, and AS5200formore information.

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