OSF DCE Administration Guide--Core Components

Introduction to the DCE Directory Service
55
CDS
Scenario A
CDS
DNS
GDA
23
41
Scenario B
14
32
GDA
CDS
GDS
CDS
The GDA helps CDS resolve names
A. in another cell that is registered in DNS
B. in another cell that is registered in GDS
11.4 How Cells Determine Naming Environments
In addition to delineating security and administrative boundaries for users and resources,
cells determine the boundaries for sets of names. Because different naming components
operate in a cell and outside of a cell, naming conventions in the cell and global
environments differ as well. The DCE naming environment supports two kinds of
names: global names and cell-relative,orlocal, names. The following subsections
introduce the concept of global and local names. Section 11.5 describes CDS, GDS, and
DNS names in detail.
11.4.1 Global Names
All entries in the DCE Directory Service have a global name that is universally
meaningful and usable from anywhere in the DCE naming environment. The prefix /...
indicates that a name is global. A global name can refer to an object within a cell
(named in CDS) or an object outside of a cell (named in GDS).
The following example shows the global name for an entry created in GDS. The name
represents user Ellie Bloggs, who works in the administrative organization unit of the
Widget organization, a British corporation.
/.../C=GB/O=Widget/OU=Admin/CN=Ellie Bloggs
124243 Tandem Computers Incorporated 11−5