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SNA/Token Ring Link Overview

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SNA/Token Ring Link is composed of hardware and software:

  • Token Ring HP-Precision Bus (HP-PB) adapter card (hardware)

  • SNA Transport (software)

  • Token ring link module (software)

  • Token ring link driver (software)

The SNA/Token Ring Link uses the HP Token Ring HP-PB adapter card to connect to the token ring LAN. The SNA/Token Ring Link implements an IEEE 802.2 type II driver to handle connection-oriented traffic and IEEE 802.5 Token-Passing Ring Medium Access Control (MAC) deterministic access method.

As a token ring allows an any-to-any connection, users on an HP e3000 can run different applications on different remote systems. Figure 1-5 "SNA/Token Ring Link Communications" shows how SNA/Token Ring Link and the SNA services implement HP 3000-to-IBM host or HP e3000-to-AS/400 communication.

Figure 1-5 SNA/Token Ring Link Communications

[SNA/Token Ring Link Communications]

Host Hardware and Software Requirements

SNA/Token Ring Link requires this IBM host hardware:

  • An IBM System/370-compatible mainframe (for example, Model 370, 303x, and 43xx).

  • An IBM 37xx-compatible communications controller that supports an NCP Token Ring Interface (NTRI) connection or an IBM 3174 Establishment Controller that supports Token Ring.

SNA/Token Ring Link requires this IBM host software:

  • MVS/SP or MVS/XA operating system.

  • ACF/NCP network control program.

  • ACF/VTAM telecommunications access method.

  • NCP Token Ring Interface (NTRI) software (NCP version 4 release 3 or later for the IBM 3725, and version 5 release 4 for the IBM 3745).

For more-specific information, contact your Hewlett-Packard sales representative.

AS/400 Hardware and Software Requirements

SNA/Token Ring Link requires this IBM AS/400 hardware:

  • An IBM AS/400 computer system with the appropriate communications controller card installed.

SNA/Token Ring Link requires this IBM AS/400 software:

  • OS/400 operating system (all SNA-related software is included within the OS/400 operating system).

For more-specific information, contact your Hewlett-Packard sales representative.

HP e3000 Hardware and Software Requirements

You can run SNA/Token Ring Link on an HP e3000 HP-Precision Bus (HP-PB) system that has at least 32MB of real memory. Depending on your system configuration, more memory might be required. Contact your Hewlett-Packard sales representative for more information.

SNA/Token Ring Link requires this HP e3000 hardware:

  • An HP e3000 HP-PB computer system.

  • An HP Token Ring HP-PB Adapter Card and the appropriate IBM Type 1 token ring cables (contact your Hewlett-Packard sales representative for more information). One Token Ring Card is required for each active link to the remote system.

  • A block mode terminal that is supported by VPLUS, for use with the Node Management Services (NMS) NMMGR configuration manager.

SNA/Token Ring Link requires this HP e3000 software:

  • HP e3000 Multiprogramming Executive with Integrated POSIX (MPE/iX) operating system.



SNA/X.25 Link Overview

Chapter 2 SNA Node and Link Configuration