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Chapter 3 Troubleshooting
3-6
Cisco 1700 Router Hardware Installation Guide
78-5405-03
Step 3
Enter the
config-register
command and the original
configuration register value that you recorded in
Step 5
.
Step 4
Press
Ctrl-Z
to exit configuration mode.
Router(config)# Ctrl-Z
Step 5
Save your configuration changes:
Router#
copy running-config startup-config
Reset the Configuration Register Value
Once you have recovered or reconfigured a password
Step 1
Enter the
configure terminal
command to enter
configuration mode:
Router#
configure terminal
Step 2
Enter the
config-register
command and the original
configuration register value that you recorded in
Step 5
.
Step 3
Press
Ctrl-Z
to exit configuration mode:
Router(config)#
Ctrl-Z
Step 4
Reboot the router, and enter the recovered password.
Problem Solving
The key to problem solving is to isolate the problem to a specific subsystem by
comparing what the router is doing to what it should be doing.
When problem solving, consider the following subsystems of the router:
•
WAN interface cards—Refer to the LEDs on the cards and the LEDs on the
router front panel to help identify a failure. For more information on WAN
interface cards, refer to the
Cisco WAN Interface Cards Hardware
Installation Guide
that comes with each card.
•
Cables—Check all the external cables that connect the router to the network.