43-6
Catalyst 3750 Switch Software Configuration Guide
OL-8550-02
Chapter 43 Troubleshooting
Recovering from a Lost or Forgotten Password
Note
This procedure is likely to leave your switch virtual interface in a shutdown state. You can see
which interface is in this state by entering the
show running-config
privileged EXEC command.
To re-enable the interface, enter the
interface
vlan
vlan-id
global configuration command, and
specify the VLAN ID of the shutdown interface. With the switch in interface configuration
mode, enter the
no shutdown
command.
Step 14
Reload the switch stack:
Switch#
reload
Procedure with Password Recovery Disabled
If the password-recovery mechanism is disabled, this message appears:
The password-recovery mechanism has been triggered, but
is currently disabled. Access to the boot loader prompt
through the password-recovery mechanism is disallowed at
this point. However, if you agree to let the system be
reset back to the default system configuration, access
to the boot loader prompt can still be allowed.
Would you like to reset the system back to the default configuration (y/n)?
Caution
Returning the switch to the default configuration results in the loss of all existing configurations. We
recommend that you contact your system administrator to verify if there are backup switch and VLAN
configuration files.
•
If you enter
n
(no), the normal boot process continues as if the
Mode
button had not been pressed;
you cannot access the boot loader prompt, and you cannot enter a new password. You see the
message:
Press Enter to continue........
•
If you enter
y
(yes), the configuration file in flash memory and the VLAN database file are deleted.
When the default configuration loads, you can reset the password.
Step 1
Elect to continue with password recovery and lose the existing configuration:
Would you like to reset the system back to the default configuration (y/n)?
Y
Step 2
Load any helper files:
Switch:
load_helper
Step 3
Display the contents of flash memory:
switch:
dir flash:
The switch file system appears:
Directory of flash:
13 drwx 192 Mar 01 1993 22:30:48 c3750-ipservice-mz-122-25.0
16128000 bytes total (10003456 bytes free)
