Determine the Services Required

The first step in planning your network is to identify what communication problems you are trying to solve and what OSI service or services best address your needs. This section describes each service provided by Hewlett-Packard and when it may be appropriate for meeting your communication needs.

X.400 Service

Type of Service	Use if:
Message Handling (Electronic Mail)	You require electronic messaging between users of the OSI network

Allows encapsulation of electronic information and reliably deliver it to one or more destination users.
Messages are transferred in a store and forward manner, not real-time.

CMIS Service

Type of Service	Use if:
Management of "managed objects"	You want distributed management of nodes and other network resources.

Can enable and disable network resources.
Can view and change configurable values.
Can register for notification of exceptional events.
Can act as a requestor of operations against a resource (a manager), or only as a responder to such requests (an agent), or both.
Provides a programmatic interface to CMIS, which allows you to write applications acting as either a requestor or a responder.

FTAM Services

Type of Service	Use if:
File Transfer	You wish to move or manage files across an OSI network.

Allows transfer of files across an OSI network.
Provides facilities to create, delete, and modify files on a remote node.
Has both a programmatic and interactive interface.

APRI Service

Type of Service	Use if:
General interprocess communication mechanism	You are po rting layer 7 protocols to the HP platform, developing specialized layer 7 applications, or remote operation applications.

Provides you with the ability to implement your own OSI application layer protocols, or custom applications.
Provides Abstract Syntax Notation One (ASN.1) context negotiation.
ROSE provides remote operation capabilities to invoke operations on the remote and receive status on completion. This service runs on top of the service provided by ACSE and Presentation.

High Availability Service

Type of Service	Use if:
Create and manage highly available clusters	You wish to create and manage highly available enterprise clusters of HP9000 Series 800 computers using the HP MC/ServiceGuard product.

Allows you to group programs in "packages" which run on particular nodes.
Monitors the health of your SPU, LAN cards, and application "packages" on each node.
See the HP OTS/9000 Addendum for more information on configuring and using HP MC/ServiceGuard with HP OTS/9000.

XTI Service

Type of Service	Use if:
Transport layer interface	You are po rting existing IPC applications that run over non-OSI networks and for achieving high performance as a result of low protocol overhead.

Provides a very simple set of functions, for example, connect, send data (normal and expedited) and disconnect.
Building blocks that provide a basic and low overhead access to performing interprocess communication over an OSI network.
Makes your application source code portable between platforms following the standard.