Reference Guide

76 | Management
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Recovering from a Forgotten Enable Password on the S4810
or S4820T
If you forget the enable password:
Recovering from a Failed Start on the S4810 or S4820T
A system that does not start correctly might be attempting to boot from a corrupted FTOS image or from a
mis-specified location. In that case, you can restart the system and interrupt the boot process to point the
system to another boot location. Use the
setenv command, as described below. For details on the setenv
command, its supporting commands, and other commands that can help recover from a failed start, see the
Boot User chapter in the FTOS Command Line Reference for the S4810 and S4820T.
8 Remove all authentication statements
you might have for the console.
no authentication login
no password
LINE
9 Save the running-config.
copy running-config startup-config
EXEC Privilege
10 Set the system parameters to use the
startup configuration file when the
system reloads.
setenv stconfigignore false
uBoot
11 Save the running-config. copy running-config startup-config EXEC Privilege
Step Task Command Syntax Command Mode
1 Log onto the system via console.
2 Power-cycle the chassis by switching off all of the power modules and then switching them back on.
3 Hit any key to abort the boot process.
You enter uBoot immediately, as
indicated by the => prompt.
hit any key (during bootup)
4 Set the system parameters to ignore
the enable password when the system
reloads.
setenv
enablepwdignore true uBoot
5 Reload the system. reset uBoot
6 Configure a new enable password. enable {secret | password} CONFIGURATION
7 Save the running-config to the
startup-config.
copy running-config startup-config EXEC Privilege
Step Task Command Syntax Command Mode
1 Power-cycle the chassis (pull the power cord and reinsert it).
Step Task Command Syntax Command Mode