Specifications

Chapter 2 Open Directory Search Policies 29
Each class (English, math, science) has its own computer. The students in each class are
defined as users in the local domain of that class’s computer. All three of these local
domains have the same shared domain, in which all the instructors are defined.
Instructors, as members of the shared domain, can log in to all the class computers. The
students in each local domain can log in to only the computer where their local
account resides.
While local domains reside on their respective computers, a shared domain resides on a
server accessible from the local domain’s computer. When an instructor logs in to any
of the three class computers and cannot be found in the local domain, Open Directory
searches the shared domain. In this example, there is only one shared domain, but in
more complex networks, there may be more shared domains.
Multilevel Search Policies
If more than one server on the network hosts a shared directory, the computers on the
network can include two or more shared directories in their search policies. As with
simpler search policies, Open Directory always looks for user information and other
administrative data first in the local directory. If Open Directory does not find the
information it needs in the local directory, it searches each shared directory in the
sequence specified by the search policy.
School Mac OS X
Server
English class
computer
Math class
computer
Shared
directory
Science class
computer
Local
directory
Local
directory
Local
directory
Local
directory
LL2352.Book Page 29 Friday, August 22, 2003 3:12 PM