OSI/AS Configuration and Management Manual

Installing and Configuring the Subsystem
OSI/AS Configuration and Management Manual—424119-001
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Configuring Layer 5 Attributes
Class 4 is required for Transport Layer subdevices when your OSI/AS subsystem runs
over a LAN; it automatically implements the transport class 4 protocol over a type C
subnetwork with multiplexing allowed.
The second attribute-spec sets the TSP retransmission timer to 20 seconds:
REXMITTIMEOUT 20
This means that TSP waits 20 seconds for an AK-TPDU before retransmitting an
unacknowledged TPDU.
Considerations
•
Notice that you alter the SERVICE object, but add the PROFILE object.
•
After adding Layer 4 PROFILE objects, you associate them with particular NSAP
addresses using NSAP ENTRY objects. See NSAP ENTRY Objects on page 2-14.
•
After adding Layer 5 PROFILE objects, you associate them with particular TSEL
addresses using TSEL ENTRY objects. See TSEL ENTRY Objects on page 2-15.
•
The Layer 4 SERVICE object in the first command example might be a typical
transport configuration that you would use over an X.25 network. The Layer 4
PROFILE object in the second command invokes the transport class 4 protocol,
which you must use for transport subdevices that operate over a LAN network.
Configuring Layer 5 Attributes
Configure Layer 5 service characteristics for TAPS processes by using either the Layer 5
SERVICE object or the Layer 5 PROFILE object. To configure these objects, you
should understand the meaning of Session Layer protocol values.
•
Use the Layer 5 SERVICE object to set default session service characteristics.
•
Use the Layer 5 PROFILE object to set service characteristics for session
subdevices using specific TSEL addresses.
See Section 2, Management Environment
, for more information on the use of the
SERVICE and PROFILE objects.
Example 1: ALTER SERVICE
The following command sets the session disconnect-and-abort timer to 60 seconds for
all the TAPS processes in the subsystem:
ALTER SERVICE $OSIM.#L5, DISCONNECTTIMEOUT 60.000
The command and object-spec identify the Session Layer of the subsystem controlled by
the OSI manager process $OSIM:
ALTER SERVICE $OSIM.#L5
The attribute-spec sets the session disconnect and abort timer to 60 seconds:
DISCONNECTTIMEOUT 60.000