SNAX/HLS Configuration and Control Manual

Introduction
Product Overview
104705 Tandem Computers Incorporated 1–3
SNAX/HLS and the Tandem
SNA Access Method
SNALU Interface
The SNAX/HLS process gains access to the SNA network by opening a SNALU LU
under the control of the Tandem SNA access method, for example SNAX/XF or
SNAX/CDF. In the case of SNAX/XF, this is a SNAX/XF LU, whose name is of the
form:
$line–name.#lu–name
In the case of SNAX/CDF, the resource being opened is actually an APPL that has
been defined to a SNAX/CDF process. The name used to open the resource is then:
$CDF–process–name.#openname–of–appl
SNAX/HLS makes no distinction between Tandem SNA access methods. The
SNAX/HLS product and this manual refers to the resource under the SNALU
interface as though it were a device on which is defined the end-user LU. Thus
references such as:
$line–name.#lu–name OR $line.#lu
reflect a resource below the SNALU interface, and is often referred to simply as the LU
or the SNAX/HLS LU. This is the name, as known to SNAX/HLS and the SNAX/HLS
application, of the local LU in the SNA session.
The actual nature of line and lu varies from access method to access method. For
SNAX/XF, the name is defined as $line.#lu where line refers to the SNAX/XF
line and lu refers to the SNAX/XF logical unit subdevice on the SNAX/XF line.
For SNAX/CDF, the name is defined as $line.#lu but line refers to the
SNAX/CDF process name and lu refers to the SNAX/CDF application OPENNAME
defined in the SNAX/CDF SCF configuration.
The actual Tandem SNA access method your installation requires is dependent on the
configuration of your SNA network. Refer to Section 2 “Planning The SNAX/HLS
Environment” for more information.
In this manual, the distinction is made between the Tandem SNA access methods
controlling the resource, for example, SNAX/XF or SNAX/CDF, only where
necessary.