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Details of the Password Recovery Procedure

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Chapter 5 Maintaining the Cisco 7206 Replacing or Recovering a Lost Password Step 7 Recover or replace the displayed passwords. Step 8 Change the configuration register back to its original setting. Note To recover a lost password if the Break function is disabled on the router, you must have physical access to the router. Details of the Password Recovery Procedure Complete the following steps to recover or replace a lost enable, enable secret, or console login password: Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Attach an ASCII terminal to the console port on your Cisco 7206. Configure the terminal to operate at 9600 baud, 8 data bits, no parity, and 2 stop bits. If you can log in to the router as a nonprivileged user, enter the show version command to display the existing configuration register value. Note the value for use later and proceed to Step 6. If you cannot log in to the router at all, go to the next step. Press the Break key or send a Break from the console terminal. If Break is enabled, the router enters the ROM monitor, indicated by the ROM monitor prompt (rommon1>). Proceed to Step 6. If Break is disabled, power cycle the router (turn the router off or unplug the power cord, and then restore power). Then proceed to Step 5. Within 60 seconds of restoring the power to the router, press the Break key or send a Break. This action causes the router to enter the ROM monitor and display the ROM monitor prompt (rommon1>). Set the configuration register using the configuration register utility; enter the confreg command at the ROM monitor prompt as follows: rommon1> confreg Answer yes to the enable "ignore system config info?" question and note the current configuration register settings. Initialize the router by entering the reset command as follows: rommon2> reset The router initializes the configuration register that is set to 0x142, and the router boots the system image from Flash memory and enters the system configuration dialog (setup) as follows: --- System Configuration Dialog -- Step 8 Enter no in response to the system configuration dialog prompts until the following message is displayed: Press RETURN to get started! Step 9 Press Return. The user EXEC prompt is displayed as follows: Router> Step 10 Enter the enable command to enter privileged EXEC mode. Then enter the show startup-config command to display the passwords in the configuration file as follows: Router# show startup-config OL-5102-02 Cisco 7206 Installation and Configuration Guide 5-15

Section	Page
Cisco 7206 Installation and Configuration Guide	1
Contents	3
Preface	7
Audience	7
Organization	8
Document Conventions	9
Warning Definition	10
Terms and Acronyms	13
Related Documentation	14
Obtaining Documentation	14
Cisco.com	14
Ordering Documentation	15
Documentation Feedback	15
Obtaining Technical Assistance	15
Cisco Technical Support Website	16
Submitting a Service Request	16
Definitions of Service Request Severity	16
Obtaining Additional Publications and Information	17
1	19
Product Overview	19
Physical Description	20
System Specifications	23
Software Requirements	24
Field-Replaceable Units	25
Network Processing Engine	25
Input/Output Controller	32
LED Descriptions	36
Port Adapters and Service Adapters	42
Power Supplies	42
Chassis	44
Flash Disks and Flash Memory Cards	45
Rack-Mount and Cable-Management Kit	46
Functional Overview	46
Port Adapter Slot and Logical Interface Numbering	46
MAC Address	48
Online Insertion and Removal	48
Environmental Monitoring and Reporting Functions	49
Environmental Monitoring	49
Reporting Functions	51
Fan Failures	53
2	55
Preparing for Installation	55
Electrical Equipment Guidelines	55
Preventing Electrostatic Discharge Damage	56
Site Requirements	56
AC and DC Power	56
Plant Wiring Guidelines	56
Interference Considerations	56
Distance Limitations and Interface Specifications	57
Equipment Racks	58
Site Environment	60
Preventive Site Configuration: Maintaining Normal Operation	60
General Precautions	62
Power Considerations	62
Tools for Installation	62
Initial Configuration Information	63
Cisco7206 Installation Checklist	64
Checking the Shipping Container Contents	65
Site Log	66
3	69
Installing the Cisco 7206	69
Rack-Mounting the Cisco7206	70
Attaching the Chassis Rack-Mount and Cable-Management Brackets	73
Installing the Brackets on the Front of the Chassis	74
Installing Brackets on the Rear of the Chassis	75
Installing the Chassis in the Rack	77
General Tabletop or Workbench Installation	77
Installing the Cable-Management Brackets	78
Securing the Port Adapter Cables	79
Providing a Chassis Ground Connection for the Router Chassis	80
Connecting Port Adapter Cables	82
Connecting I/O Controller Cables	82
Console and Auxiliary Port Connection Equipment	82
Console Port Signals	83
Auxiliary Port Signals	84
Fast Ethernet Connection Equipment	84
Fast Ethernet MII Connection Equipment	85
Ethernet and Fast Ethernet RJ-45 Connection Equipment	86
Connecting Power	88
Connecting AC-Input Power	88
Connecting DC-Input Power	89
Starting the Cisco7206	92
4	95
Performing a Basic Configuration of the Cisco7206	95
Using the Enable Secret and the Enable Password	95
Configuring the Cisco7206	96
Configuring the Cisco7206 Using AutoInstall	96
Configuring the Cisco7206 Manually Using the Setup Facility	97
Configuring Global Parameters	97
Configuring Interfaces	100
Configuring the Cisco7206 Using Configuration Mode	103
Saving Your Settings to NVRAM	104
Checking Your Settings and Reviewing Your Configuration Changes	104
Performing Other Configuration Tasks	104
Performing a Complex Configuration	105
5	107
Maintaining the Cisco 7206	107
Viewing Your System Configuration	107
Replacing a Port Adapter or Service Adapter	110
Removing a Port or Service Adapter	110
Installing a Port Adapter or Service Adapter	111
Installing and Removing a Flash Memory Card	113
Inserting a Flash Memory Card	113
Removing a Flash Memory Card	115
Formatting a New Flash Memory Card	115
Copying a Bootable Image onto a Flash Memory Card	116
Copying Bootable Images between Flash Memory Cards	117
Reformatting a Flash Memory Card	118
Replacing or Recovering a Lost Password	120
Overview of the Password Recovery Procedure	120
Details of the Password Recovery Procedure	121
6	125
Troubleshooting the Installation	125
Contacting a Customer Service Representative	125
Troubleshooting Overview	126
Using a Subsystems Approach to Problem Solving	127
Identifying Startup Problems	127
Troubleshooting the Power Subsystem	129
Troubleshooting the Processor Subsystem	130
Troubleshooting the I/O Controller	130
Troubleshooting the Network Processing Engine	131
Troubleshooting the Port Adapter and Service Adapters	131
Troubleshooting the Cooling Subsystem	131
A	133
Industry-Standard Wiring Plans	133
B	137
Configuration Register Information	137
Configuration Bit Meanings	137
Bits 0–3	138
Bit 6	139
Bit 7	139
Bit 8	140
Bit 10 and Bit 14	140
Bit 11 and Bit 12	140
Bit 13	140
Bit 15	141
Displaying the Configuration Register While Running Cisco IOS	141
Displaying the Configuration Register While Running ROM Monitor	141
Setting the Configuration Register While Running Cisco IOS	142
Setting the Configuration Register While Running ROM Monitor	142

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5-15

Cisco 7206 Installation and Configuration Guide

OL-5102-02

Chapter 5

Maintaining the Cisco 7206

Replacing or Recovering a Lost Password

Step 7

Recover or replace the displayed passwords.

Step 8

Change the configuration register back to its original setting.

Note

To recover a lost password if the Break function is disabled on the router, you must have physical access

to the router.

Details of the Password Recovery Procedure

Complete the following steps to recover or replace a lost enable, enable secret, or console login

password:

Step 1

Attach an ASCII terminal to the console port on your Cisco 7206.

Step 2

Configure the terminal to operate at 9600 baud, 8 data bits, no parity, and 2 stop bits.

Step 3

If you can log in to the router as a nonprivileged user, enter the

show version

command to display the

existing configuration register value. Note the value for use later and proceed to

Step 6

. If you cannot

Step 4

Press the

Break

key or send a Break from the console terminal. If Break is enabled, the router enters the

ROM monitor, indicated by the ROM monitor prompt (

rommon1>

). Proceed to Step

6. If Break is disabled,

power cycle the router (turn the router off or unplug the power cord, and then restore power). Then

proceed to Step 5.

Step 5

Within 60 seconds of restoring the power to the router, press the

Break

key or send a Break. This action

causes the router to enter the ROM monitor and display the ROM monitor prompt (

rommon1>

Step 6

Set the configuration register using the configuration register utility; enter the

confreg

command at the

ROM monitor prompt as follows:

rommon1>

confreg

Answer

yes

to the enable “ignore system config info?” question and note the current configuration

Step 7

Initialize the router by entering the

reset

command as follows:

rommon2>

reset

The router initializes the configuration register that is set to 0x142, and the router boots the system image

from Flash memory and enters the system configuration dialog (setup) as follows:

--- System Configuration Dialog --

Step 8

Enter

in response to the system configuration dialog prompts until the following message is

displayed:

Press RETURN to get started!

Step 9

Press

Return.

The user EXEC prompt is displayed as follows:

Router>

Step 10

Enter the

enable

command to enter privileged EXEC mode. Then enter the

show startup-config

command to display the passwords in the configuration file as follows:

Router#

show startup-config