Dell Brocade G620 Brocade 8.0.1 Fabric OS Administratiors Guide - Page 156
Changing the root password without the old password, Configuring the password hash type
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Managing User Accounts Changing the root password without the old password Starting with Fabric OS 7.4.0, in environments where switch account passwords are controlled by password management appliances, you can configure an option to not verify the old password while changing the root password. By default, this option is disabled, which means that you must provide the old password to change the root password. To disable verification of the old password, complete the following steps: 1. Use the passwdcfg --set -oldpasswd {1 | 0} command. ∙ 1 enables the option; the old password is not required to change the root password. ∙ 0 disables the option; the old password is required to change the root password. switch:root> passwdcfg --set -oldpasswd 1 2. Enter the passwd command to change the root password. Switch:root> passwd Warning: Access to the Root account may be required for Proper support of the switch. Please ensure the Root Passwords are documented in a secure location. Recovery of a lost Root password will result in fabric downtime. Changing password for root Enter new password: The -oldpasswd configuration is discarded when you downgrade to any version prior to Fabric OS 7.4.0. The -oldpasswd configuration is retained when you upload the switch configuration or upgrade to a later version of Fabric OS. Configuring the password hash type Fabric OS prior to 8.0.1 uses MD5 hash type for storing the local user passwords. Starting with Fabric OS 8.0.1, SHA256 and SHA512 hash types are also supported. Whenever you change the hash type, you will be prompted to change the password in the next log in. You can also use the manual option to manually trigger a password change immediately after the hash type configuration. After a new password hash configuration, by default, you are forced to change the password in the next login. When the -manual option is used, you can change the password using the password command. To change the password hash type, complete the following steps: 1. Login with the device using the username and password. 2. Enter the passwdcfg --hash {md5|sha256|sha512} [-manual] command to configure the hash type for the logged in user's password. 3. Enter the new password and confirm the same. 4. Use the following commands to display the password hash type for the current user, any user, or all users configured in the device. ∙ Use the passwdcfg -showhash command to display the configured hash type on the switch. ∙ Use the passwdcfg -showhash username command to display the current password hash for the username. ∙ Use the passwdcfg -showhash -all to display the current password has for all the users on the switch. Sample output: switch(mode)# passwdcfg --hash sha256 -manual switch(mode)# Enter the new password: Confirm the new password: switch(mode)# passwdcfg -showhash -all Brocade Fabric OS Administration Guide, 8.0.1 156 53-1004111-02
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