This is the password for authentication.
If the value of h3cDLDPAuthenticationMode is null,
the user cannot set this node.
If the value of h3cDLDPAuthenticationMode is simple or MD5,
the user must set this node with a string.
When the user gets or walks this node,
it displays a cipher password if h3cDLDPAuthenticationMode is MD5 or
simple or a zero-length string if h3cDLDPAuthenticationMode is null.