| Description | 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. |