Previous Page Index Next Page Microsoft Home Page

Return to Start Page

iPlatform Architecture

iiThis section describes the ILS platform architecture, including the computers, operating system, and network components. ILS is defined here in terms of the logical topology, or arrangement, of computers. The overall hardware platform, architecture options, and related products are discussed.


Platform Overview

iiWithin an Internet service provider site, the ILS platform follows the client/server model. ILS can be placed on one computer running Microsoft Windows NT Server. Alternatively, there can be multiple ILS servers, depending on the type and quantity of load.


Key Components

The ILS distributed environment consists of computers located at the client site and at a central data center. The following table describes the computers used with ILS.




End-user site for location clients. All HTTP and ILS LDAP clients are supported. For example, a client can include Microsoft Windows 95, Microsoft NetMeeting, or Intel Internet Phone.

ILS server

Data center site. Windows NT Server version 4.0 with Service Pack 1, Microsoft Internet Information Server version 3.0.


Architecture Model

ILS runs within the IIS framework. Like the Web or Gopher service, ILS is managed through the IIS framework. The simplest installation of ILS would require one ILS running on a single computer.

The following diagram shows a possible network topology of an ILS system.

Undisplayed Graphic

Clients depend on ILS to provide dynamic (location) directory information. ILS maintains a directory database in memory. The ILS database can be administered in either of the following ways:


Configuration Options

ILS is designed to provide reliable dynamic (location) directory services for tens of thousands of users per server. You can set up in a variety of configurations.

The following diagram illustrates one configuration option for ILS.

Undisplayed Graphic


Related Products

ILS interacts with other software for management of its entries. ILS requires IIS to provide the base administrative and Web client support; optionally; ILS also uses a user-authorization component, such as NTLM or Microsoft Membership Broker, to provide authentication of users interacting with ILS servers.

The following table describes how ILS relates to these other software components.

Software product


Windows NT Server version 4.0 with Service Pack 1

The operating system that ILS runs on.

Internet Information Server version 3.0

ILS uses the IIS Web service to receive search requests from clients and to display results on-screen. ILS adds an LDAP service to the IIS framework. IIS also contains the script interpreter engine that provides Microsoft Active Server Pages (ASP) processing capabilities.

Previous Page Index Next Page Microsoft Home Page

Return to Start Page

© 1996-1997 Microsoft Corporation. All rights reserved.