Which command is used to encrypt all passwords in a router configuration file?

Service Password encryption

Explanation:

It is noted that the command used on routers, to get the data of all the passwords in a router configuration file encrypted is the service password encryption.

Service password encryption solely affects plain text passwords types that includes that of the line passwords or that of the enable password. The feature uses a simple substitution method to create a "secure" non-text password displayed in the configuration.