Systems Network Architecture SNA Onno W Purbo Onnoindo
Systems Network Architecture (SNA) Onno W. Purbo Onno@indo. net. id
Outline n n n Beberapa Definisi Beberapa Konfigurasi Interkoneksi SNATCP/IP Beberapa Contoh Barang
Beberapa Definisi
SNA Related Definition
System Network Architecture (SNA)
APPC
Virtual Telecommunication Access Method (VTAM)
Synchronous Data Link Controller (SDLC)
TCP/IP Related Definition
TCP/IP
Transmission Control Protocol (TCP)
Inter. Net Protocol (IP)
Interkoneksi SNA-TCP/IP
Why? (Dari Bus. Tech) n 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. . n n 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 TN 3270 E. In effect, TN 3270 E is a standard 3270 screen protocol within the headers and trailers that make up the telnet packet.
Traditional SNA Network
Emulate Terminal & Hardware n 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.
Typical TCP/IP WAN n Typically, an SNA WAN consists of remote controllers connected over source route bridges or SDLC leased lines. The SNA WAN is generally not integrated with the routed TCP/IP WAN.
TCP/IP WAN + SDLC LC
Use Mainframe TCP/IP Stack n The mainframe TCP/IP stack allows for the creation of a TCP/IP-only LAN and WAN.
Cost Consideration n n the the cost of of the new gateways re-engineering upgrading retraining
Channel Connected Solutions n n IBM Channel Connections IBM Channel-Attached Control Units SNA Gateway The PCI Bus
Microsoft SNA Server n n Flexible Network Administration Full SNA Application Support SNA Server is a flexible LAN-to-SNA gateway that provides SNA communications for LANbased 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 n n n 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 TN 3270 access to host applications through a Windows NT Server-based TN 3270 service.
Increased LAN Protocol Choice
SNA Server n n n SNA Server offers flexibility and greater choice. Platform for Growth Extra Layer of Security
Branch-Based Deployment Model n Remote SNA Servers connect to the host via SDLC or LLC.
Centralized deployment model n Channel-attached SNA Servers provide support for TCP/IP clients.
Distributed deployment n Remote SNA Servers connect via TCP/IP to central site SNA Servers, sharing the channel-attached host links.
Contoh Barang n n Net. Shuttle Enterprise Express Adapter
Net. Shuttle
Enterprise Express Adapter
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