OSI/AS Configuration and Management Manual

Installing and Configuring the Subsystem
OSI/AS Configuration and Management Manual—424119-001
4-26
Configuring Static Subdevices
After a loopback connection is made, what happens to the connections between the
lower layers on the called end depends upon how the subdevices are configured, as
follows:
•
If the system is configured for static subdevices, the connections between the TAPS
and TSP processes, between the TSP and NSP processes, and between the NSP
processes and the Physical Layer are maintained. However, these connections are no
longer actually waiting for a call (since a loopback connection has already been
established) and cannot receive another attach request.
•
If the system is configured for dynamic subdevices, the connections between the
TAPS and TSP processes, between the TSP and NSP processes, and between the
NSP processes and the Physical Layer are terminated.
Loopback connections are available only if you use APPL ENTRY objects. Configure a
loopback connection as follows:
•
Specify the LOOPBACK option in the remote (the called address) APPL ENTRY
object.
•
You may omit the local (calling) L3SERVER, L4SERVER, L3PROFILE, and
L4PROFILE from the ENTRY objects.
•
You may omit the local (calling) NSAP address and SNPA address.
Configuring Static Subdevices
Dynamic subdevices are automatically closed when a connection is terminated; static
SUs are saved and reused (the application must specify the SU name it wishes to use).
Static connections are used to improve subsystem performance (see Connection-Related
Attributes on page 6-5) and for troubleshooting (see An Approach to Troubleshooting
on page 8-8).
Static subdevices are available only if you use APPL ENTRY objects. To configure a
connection for static subdevices, use the DELETETIME option in the APPL ENTRY
object.
Adding SNPA ENTRY Objects
Add SNPA ENTRY objects to configure the Network Layer of your subsystem.
Example 1: 1984 X.25
The following command adds an SNPA ENTRY object on an 1984 X.25 WAN:
ADD ENTRY $OSIM.#SNPA.02 &
, L3SERVER $OSIM.#NSP.NSP1 &
, L3PROFILE $OSIM.#L3.NPFILE3
This example assigns a Layer 3 profile called NPFILE3 to SNPA address 02.