Jul 01, 2022 Last Updated 9:21 AM, Aug 20, 2020

TPS®/SNA Product Series

Published in TPS

TPS®/ SNA ( Systems Network Architecture ) is a full featured SNA implementation for both traditional hierarchical subarea networks ( PU 4 / 5 to PU 2.0 ) and peer-to-peer networks ( PU 2.1 ). LU support includes dependent support for LUs 0, 1, 2, 3, 4, 7 and dependent and independent LU support for LU 6.2. TPS®/ SNA supports multiple links ( PUs ) and data link types on the same system ( limited only by the number and type of hardware adapters on the system ). Data link types supported include: SDLC, Token Ring, Ethernet, or Data Link Switching - DLSw ( Switch-to-Switch Protocol ).

TPS® /SNA provides a full set of standard SNA APIs, including CPI-C ( Common Programming Interface - Communications ), APPC ( Advanced Program to Program Communications ) and dependant LU API for LU types 0, 1, 2, 3, 4, and 7. Developers can then write user application programs to interface directly with host applications. TPS®/ SNA can also be used with TPS® /SNA Primary to create a ‘Virtual SNA Mainframe’ so you can migrate your host applications to the UNIX® platforms.

TPS®/SNA works with TPS®/ 3270 ( SNA ) emulation, TPS®/ RJE ( Remote Job Entry ), and many other networking software applications to provide exceptional client to host connectivity. TPS®/ SNA can also be used with TPS®/ TN3270 Server to create an Internet TN3270 gateway environment.

TPS®/ SNA is not only exceptionally reliable, but it makes host connectivity economical and easy.

TPS®/ SNA can be used with TPS®/ SNA Primary to simulate a ‘Virtual SNA Mainframe’. Ideal for company looking to replace their mainframe or write customized applications. With TPS®/ SNA API support, TPS®/ SNA is an excellent fit for developing SNA applications.


TPS®/SNA uses standard UNIX® functions to support the data link and application interfaces. This makes TPS®/SNA portable across UNIX® platforms and gives a common look and feel if TPS®/SNA is run on differing UNIX® platforms. It also makes the product very independent of UNIX version changes. When an upgrade is made to the operating system, a new version of SNA is not required.

TPS®/SNA was designed with performance in mind. Advanced message buffering and handling techniques have been used for the SNA traffic to reduce the processor and memory overhead.


TPS®/ SNA is an ideal solution for SNA connectivity in distributed UNIX® networks. In addition to being full-featured, ultra-reliable and delivering maximum performance with minimum system overhead, TPS®/ SNA is very competitively priced.


  • Full featured SNA software platform for connecting to upstream SNA Hosts and APPN networks
  • Supports Application Program Interfaces ( APIs ) for LU 6.2 ( CPI-C and APPN ) and for Dependent LU types 0, 1, 2, 3, 4, and 7
  • Supports a wide range of data link connection types including SDLC, Token Ring, Ethernet, Data Link Switching ( Switch-to-Switch Protocol )
  • Very easy installation and configuration
  • Can be used with TPS®/ SNA Primary to provide a ‘Virtual SNA Mainframe’
  • Low system resource requirements
  • High reliability and performance
  • Interfaces with a full set of SNA applications
  • Advanced diagnostic tools for problem determination
  • From TPS® Systems — with 25+ year tradition of excellence in providing network software and support for large global enterprises


  • Encrypt (SSL) and compress data transfers
  • Extensive auditing and logging capabilities
  • User authentication utilizing Radius, LDAP and Active Directory
  • Automate file transfers with sophisticated scheduler
  • Dynamic monitoring capabilities for viewing transmissions in progress
  • True peer-to-peer file transfers; no repository
  • Multi-platform and OS support
  • JAVA-based browser interface to monitor and configure activity
  • Control file transfers and program execution with custom transmission plan builder
  • File Synchronization
  • Transfers on demand – Quick Functions
  • Transfer files utilizing FTP and FTP-S
  • Event Driven using command-line interface
  • Automatic transfer initiated with file discovery
  • Transfer reports using z/OS JES Interface
  • File Streaming/Trickle
  • Checkpoint restart and transfer retries
  • Wild card and environment variable substitution
  • IP Multicasting
  • Bandwidth Management and Performance
  • Monitoring


Data-Link Protocol Support
TPS®/ SNA supports many data link types:

  • Synchronous Data Link Control ( SDLC )
    • Leased or switched connections
    • RS-232, RS-422, V.35, V.25, and SmartModem
  • Token Ring
    • IEEE 802.2 LLC
    • IEEE 802.5
    • Multiple connections per Token Ring supported
  • Ethernet
    • IEEE 802.2 LLC
    • IEEE 802.3 Ethernet or Standard Ethernet
    • Multiple connections per Ethernet supported
  • DLSw - Data Link Switching connection ( SSP - Switch-to-Switch Protocol )
    • Uses TCP/IP connection
    • PU connection to DLSw router using SSP

SNA PU Protocols

  • PU type 2.0 support ( connection to host PU 4/5 )
    • Up to 255 dependent LUs per PU
  • PU type 2.1 support ( connection to APPN networks or host PU 4/5 systems )
    • Up to 10,000 independent LU sessions
    • APPN LEN node support
    • APPN EN node support
    • APPN NN node support

SNA LU Protocols

  • Dependent LU support for LUs 0, 1, 2, 3, 4, and 7
  • Dependent and independent LU support for LU 6.2


  • CPI-C ( Common Programming Interface - Communications ) for both C and COBOL languages
  • APPC ( Advanced Program-to-Program Communications ) ( IBM® Implementation only )
  • Dependent LU API for LU types 0, 1, 2, 3, 4, and 7

Management Systems
TPS®/ SNA is designed for straightforward central site installation/deployment and efficient ongoing manageability. A Management Subsystem provides:

  • Installation using the operating system’s standard facilities
  • Quick and easy configuration
  • Full SNA and PU status display
  • Error logs
  • Complete trace facilities including fully formatted output

Additional Features

  • LU prioritization by address or COS
  • Multiple PUs on Token Ring or Ethernet
  • Conversion utility that transfers configurations from IBM® SNA Server for AIX®

Network Availability & Resiliency
TPS®/ SNA provides automatic link restart and standard link error recovery procedures to support mission-critical networks.

System Requirement

Operating System:

IBM® AIX® pSeries (32 / 64-bit)
Linux® IBM® pSeries (64-bit)
Intel®/AMD® (32-bit)
Intel® Itanium (64-bit)
HP-UX™ HP9000 (32 / 64-bit)
HP Integrity (64-bit)
Sun Solaris® Sparc (32 / 64-bit)
SCO OpenServer5®  

Other Requirements:
Supported communications adapter driver

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