OSI/AS Management Programming Manual

Programmatic Commands
Introduction
056785 Tandem Computers Incorporated 1–9
The ACSE SERVICE, for ACSE thresholds
You can neither add nor delete SERVICE objects.
SERVICE objects define configurations that affect all connections within their
respective layers. However, within the Network, Transport, and Session Layers, you
can configure particular SNPAs, NSAPs, and TSELs with values that override the
default SERVICE values by assigning PROFILE objects (discussed in the next
subsection) to these addresses.
PROFILE
A PROFILE object is a set of values for protocol configuration parameters within the
Network, Transport, and Session Layers. Each of these layers can contain several
different PROFILE objects, each specifying a different protocol configuration.
PROFILE objects are managed exclusively by the OSI manager process.
OSI/AS defines three types of PROFILE objects:
The L3 PROFILE, for Network Layer protocol parameters (applicable only to
X25AM NSP processes)
The L4 PROFILE, for Transport Layer protocol parameters
The L5 PROFILE, for Session Layer protocol parameters
PROFILE objects are associated with specific addresses. Each L3 PROFILE is
associated with a particular subnetwork point of attachment (SNPA); each L4
PROFILE, with a network service access point (NSAP); and each L5 PROFILE, with a
transport selector (TSEL).
Once you associate an L3 or L4 PROFILE object with an address, connections through
that address are configured according to that PROFILE, subject to the following rules:
1. In a connect request, the called (remote) application name has a PROFILE
associated with it, the connection uses the parameters specified in the remote
PROFILE.
2. If the called (remote) application name has no PROFILE associated with it, but the
calling (local) application has a PROFILE, the connection uses the parameters
specified in the local PROFILE.
3. If neither application name has a PROFILE associated with it, the connection uses
the parameters specified in the L3 or L4 SERVICE object.
Once you associate an L5 PROFILE object with a TSEL, connections through that TSEL
are configured by that PROFILE, subject to the following rules:
1. If the calling (local) application name for the connection has a PROFILE associated
with it, the connection uses the parameters, thresholds, and timers specified in the
local PROFILE.
2. If the calling (local) application name has no PROFILE associated with it, the
connection uses the parameters, thresholds, and timers specified in the L5
SERVICE object.