TCP/IP Direct Connect supports three link types across the ESCON channel: Channel-to-Channel (CTC), High-Speed Access Services (HSAS) for UDP, or Multi- Path Channel Point-to-Point (MPCPTP). HSAS and MPCPTP require installation of MPC+ for Windows (MPC+).

CTC links use two ESCON devices (one for read, one for write) to communicate with mainframe TCP/IP stacks such as OS/390 TCP/IP, MVS TCP/IP and VM TCP/IP. These links support simple TCP/IP applications such as Telnet, TN3270, and FTP.

High-Speed Access Services is a MPC+ link specifically designed to work with the OpenEdition TCP/IP stack provided with OS/390 version 2 release 4 and above. HSAS provides support for applications using Universal Datagram Protocol (UDP). The System/390 SAP R/3 implementation uses HSAS TCP/IP to retrieve data from DB/2 running under OS/390.

MPCPTP links provide full TCP/IP communications over MPC to OS/390 version 2 release 5 and above. Applications such as Telnet, TN3270, FTP, and Web Servers would use a MPCPTP link to communicate with OS/390 TCP/IP over MPC+.

Windows 2000

Installation

TCP/IP Direct Connect provides a setup program for installing itself into a Windows 2000 environment. The setup program may be run as many times as necessary to provide connection to each TCP/IP stack running on the mainframe.

Step

1.Insert the TCP/IP Direct Connect for Windows 2000 floppy into your systems drive and invoke the setup program (see Figure 5-3).

Figure 5-3. Running TCP/IP Direct Connect Setup

24 PCI ESCON Adapter Installation Guide

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Multi-Tech Systems 40-01459-D0-001 manual Step, Installation