OSPF Authentication Simple Password

Simple authentication uses a plain-text password that is included in the transmitted packet. The receiving routing device uses an authentication key (password) to verify the packet. Plain-text passwords are not encrypted and might be subject to packet interception. This method is the least secure and should only be used if network security is not your goal. You can configure only one simple authentication key (password) on the routing device. The simple key can be from 1 through 8 characters and can include ASCII strings. If you include spaces, you must enclose all characters in quotation marks (" ").