Novell EDIRECTORY 8.8 SP3, Руководство администратора, Страница: 401 / 634

Implementing the Service Location Protocol 401
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SLP Scope Container Object
SLP uses the SLP Scope container object, which defines a logical grouping of services. The Scope
object allows network administrators to logically group services according to geographical,
geopolitical, service type, or any other administrative criteria in order to control distribution or
visibility on the network. The primary goal of the Scope object is to enhance the scalability of
gathering and distributing network service information.
The SLP Scope object is the storage container for SLP service information. Each object contains all
the SLP Service objects for the specific scope. The eDirectory administrator can replicate the
container into other partitions within the tree or within federated trees. The object is a standalone
entity within the eDirectory tree, and there is no relationship between its distinguished name, the
tree name, and the scope name. When a Service Agent forwards a service record to a Directory
Agent within a specific scope, the scope name is mapped to the Scope object by using the name
attribute within the container object. The SLP Scope object must contain rights to read, write, and
browse the container because the access rights of the Directory Agent object access are equivalent to
the access rights of the Scope object. Because the Scope object uses distinguished name syntax, the
Scope object can be moved to a different location in the tree. eDirectory will automatically change
all values to reflect the new location.
SLP Service Object
The SLP Service object is a leaf object that represents a service registration. SLP Service objects are
subordinate to the SLP Scope object and contain all information supplied by a service registration.
SLP Service objects are stored in the appropriate SLP Scope object according to their scope.
Directory Agent Object
The SLP Directory Agent object is a leaf object that represents a single instance of a Directory
Agent. Multiple Directory Agents cannot share a single object. This object defines the Directory
Agent’s configuration, scope, and security. The Directory Agent uses this object to log in to the
server and operate under the access control requirements assigned to the Server object.
Server Object
The NetWare installation program creates an NCP_SERVER object for every server within the tree.
The Directory agent adds an attribute to the NCP_SERVER class definition called SLP Directory
Agent DN. The SLP Directory Agent DN contains the distinguished name of the Directory Agent
object. It is used as a pointer from the Server object to the Directory Agent object.
15.5 Novell’s Implementation of SLP
The following sections discuss Novell’s implementation of the Service Location Protocol (SLP)
specification.
Š
Section 15.5.1, “Novell’s User Agents and Service Agents,” on page 402
Š Section 15.5.2, “The Novell Directory Agent,” on page 406
Š
Section 15.5.3, “Using the Novell Windows NT Directory Agent,” on page 407
Š Section 15.5.4, “Using the Service Location Protocol Directory Agent,” on page 411