Why? (Dari BusTech) In today's corporate world, information, in the form of data is located across the entire enterprise, from desktop to mainframe. The need to share this information in a distributed heterogeneous environment is crucial to the success of the mission critical-business applications. In this environment, the rich data content of the mainframe, which commonly stores 70% of corporate America's data, plays an ever-increasing roll. The protocol of choice to achieve this interoperability is TCP/IP.
Why? … continue.. Mainframe based TCP/IP protocol stacks have become common place. Approximately 65% of installed mainframes support TCP/IP, in one form or another. Mainframe based TCP/IP has two primary uses, access to legacy data and file transfer. In a typical implementation, access to legacy data is accomplished via a telnet service called TN3270E. In effect, TN3270E is a standard 3270 screen protocol within the headers and trailers that make up the telnet packet.
Emulate Terminal & Hardware Emulation sessions replaced dedicated terminal and printer hardware, but still relied on an SNA LAN and WAN. Remote offices were connected to the mainframe via SDLC-attached remote controllers.
Cost Consideration the cost of the new gateways the cost of re-engineering the cost of upgrading the cost of retraining
Channel Connected Solutions IBM Channel Connections IBM Channel-Attached Control Units SNA Gateway The PCI Bus
Microsoft SNA Server Flexible Network Administration Full SNA Application Support SNA Server is a flexible LAN-to-SNA gateway that provides SNA communications for LAN- based services and multiple platform PC workstations running a variety of network protocols. SNA Server employs a client/server architecture that is tightly integrated with, and leverages the strengths of, Windows NT Server.
Microsoft SNA Server SNA Server can be configured as an IBM PU 2.0, PU 2.1, APPN® LEN node, and can support multiple DSPU devices. LU services provided are LU 0, 1, 2, 3, and LU 6.2. SNA API support is comprehensive, including APPC, CPI-C, CSV, LUA/RUI, LUA/SLI, and EHNAPPC. SNA Server supports direct TN3270 access to host applications through a Windows NT Server-based TN3270 service.
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