Dell PowerSwitch S4820T 9.50.1 Configuration Guide for the S4820T System - Page 78

If another user attempts to enter CONFIGURATION mode while a lock is in place, the following appears on their terminal (message 1): % Error: User "" on line console0 is in exclusive configuration mode. If any user is already in CONFIGURATION mode when while a lock is in place, the following appears on their terminal (message 2): % Error: Can't lock configuration mode exclusively since the following users are currently configuring the system: User "admin" on line vty1 ( 10.1.1.1 ). NOTE: The CONFIGURATION mode lock corresponds to a VTY session, not a user. Therefore, if you configure a lock and then exit CONFIGURATION mode, and another user enters CONFIGURATION mode, when you attempt to re-enter CONFIGURATION mode, you are denied access even though you are the one that configured the lock. NOTE: If your session times out and you return to EXEC mode, the CONFIGURATION mode lock is unconfigured. Recovering from a Forgotten Password on the S4820T System If you configure authentication for the console and you exit out of EXEC mode or your console session times out, you are prompted for a password to re-enter. Use the following commands if you forget your password. 1. Log onto the system using the 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. (during bootup) hit any key NOTE: You must enter the CLI commands. The system rejects them if they are copied and pasted. 4. Set the system parameters to ignore the startup configuration file when the system reloads. uBoot mode setenv stconfigignore true 5. To save the changes, use the saveenv command. uBoot mode saveenv 6. Reload the system. uBoot mode reset 7. Copy startup-config.bak to the running config. EXEC Privilege mode copy flash://startup-config.bak running-config 8. Remove all authentication statements you might have for the console. 78 Management