vtp Authentication Table

1.3.6.1.4.1.9.9.46.1.9.1

The table contains the authentication information of VTP in which the local system participates. The security mechanism of VTP relies on a secret key that is used to alter the MD5 digest of the packets transmitted on the wire. The secret value is created from a password that may be saved in plain text in the configuration or hidden from the configuration. The device creating or modifying the VTP configuration signs it using the MD5 digest generated from the secret key before advertising it. Other devices in the domain receive this configuration use the same secret key to accept it if correctly signed or drop it otherwise. The user has the option to hide the password from the configuration. Once the password is hidden, the secret key generated from the password is shown in the configuration instead, and there is no other way to show the password in plain text again but clearing it or resetting it. In an un-trusted area, the password on a device can be configured without being unveiled. After that, it has to be provided again by setting the same value to vtpDatabaseTakeOverPassword if the user wants to take over the whole VTP management domain of the database type. When managementDomainVersionInUse is version3(4), the authentication mechanism is common to all VTP database type.