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Topic: Systems Network Architecture

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	Systems Network Architecture - Wikipedia, the free encyclopedia
		SNA is still used extensively in banks and other financial transaction networks, as well as in many government agencies.
		For small networks, this may be true, but as the complexity of a large routed network grows, the SNA structure provides a cheaper path.
		Within SNA there are two types of datastream to connect local terminals and printers; there is the 3270 datastream mainly used by mainframes (zSeries family) and the 5250 datastream mainly used by minicomputers/servers such as the S/36, S/38, and AS/400 (nowadays called the iSeries).
	en.wikipedia.org /wiki/Systems_Network_Architecture (464 words)

	IBM Systems Network Architecture (SNA) Protocols
		A key construct defined within the overall SNA network model is the path control network, which is responsible for moving information between SNA nodes and facilitating internetwork communication between nodes on different networks.
		SNA implements X.25 as the access protocol, and SNA nodes are considered adjacent to one another in the context of X.25 networks.
		SNA commands are sent in command request units that control the network and contain information exchanged between end users.
	www.cisco.com /univercd/cc/td/doc/cisintwk/ito_doc/ibmsna.htm (4120 words)

	SNA Protocols - DLSw \| HPR-APPN \| NHDR \| NLP \| QLLC \| SDLC \| SNA \| SNA Terminology \| SNA TH0 & TH1 \| SNA TH5 \| THDR
		SNA was one of the first communications architectures to use a layered model, which later became the basis for the OSI model.
		HPR network is an extension of the SNA network.
		The network services header is used primarily to identify the network services category of the RU and the particular request code within a category.
	www.protocols.com /pbook/sna.htm (3127 words)

	Systems Network Architecture Definitions
		A system abend is done by the system because a system request (this is a supervisor call, usually done by a SVC) cannot be completed; therefore, the program that issued it cannot continue to work.
		Systems network architecture uses the term session to refer to various types of data flow in a network.
		In this document, the systems network architecture controller represents the type 2.1 node (or physical unit) when on the CICS adapter side as well as the type 5 node, when at the mainframe site.
	www.boku.ac.at /oradoc/ias/10g(9.0.4)/integrate.904/b10410/oaicicssnadefinitions.htm (3307 words)

	SNA (Systems Network Architecture) (Linktionary term) (Site not responding. Last check: 2007-11-06)
		SNA is an IBM architecture that defines a suite of communication protocols for IBM systems and networks.
		Legacy SNA is based on the older concept of centralized processing, where the mainframe was the central computing node.
		There were attempts to maintain the legacy SNA architecture by integrating these new systems as dumb terminals, even though they had their own processing power.
	www.linktionary.com /s/sna.html (412 words)

	IBM System Network Architecture (SNA) Routing
		Today, IBM Systems Network Architecture (SNA) routing involves two separate kinds of environments, although a number of key concepts are central to all SNA routing situations.
		SNA logical areas and node addressing are two central components of traditional routing in SNA environments.
		IBM Advanced Peer-to-Peer Networking (APPN) routing is dynamic and is based on a least-weight path calculated from input received from all APPN network nodes.
	www.cisco.com /univercd/cc/td/doc/cisintwk/ito_doc/ibmsnaro.htm (2632 words)

	Introduction to SNA (Site not responding. Last check: 2007-11-06)
		In APPN SNA, there are control blocks for the session in all of the intermediate nodes through which the message passes.
		SNA, however, requires a technically trained central staff ready and able to respond to problems as they are reported by the network equipment.
		The mainframe-managed subarea network was originally designed so that every terminal, printer, or application program was configured by name on the mainframe before it could use the network.
	pclt.cis.yale.edu /pclt/COMM/SNA.HTM (1522 words)

	Systems Network Architecture (SNA)
		SNA is an architecture designed to be independent of specific software or hardware.
		Figure 1-1, “Node Types in an SNA Network” shows a typical IBM network, with a centralized mainframe that serves smaller processors in remote locations.
		Figure 1-2, “Type 2.1 Nodes in an SNA Network” shows an SNA network without a host node, where two AS/400s and one HP 3000 communicate peer-to-peer as Type 2.1 nodes.
	docs.hp.com /en/30294-90008/ch01s01.html (1378 words)

	Communicate: The end of SNA? - Systems Network Architecture (Site not responding. Last check: 2007-11-06)
		SNA users are typically `heads down' data entry or customer service staff, whose productivity depends on the performance of the host application and the network that connects terminals to those applications.
		These traditional SNA users, such as airline reservation desks, may connect to the mainframe over SNA from their traditional 3270 or 5250 green-screen `dumb' terminals, or from a PC running SNA emulation software that makes the PC look like a dumb terminal to the mainframe.
		The logical destination for SNA is as a network equivalent of Howard Hughes, living in a glasshouse talking only to peripherals and surrounded by middleware.
	www.findarticles.com /p/articles/mi_m0BKU/is_2000_May/ai_62495178 (1324 words)

	Systems Network Architecture Concepts
		The architecture requires that session-level LU-LU verification be allowed when conversation-level security option sets are enabled and when the logical units that make up the network are not physically secure (as determined by installation management).
		In an IBM mainframe using OS/390 for example, VTAM, in essence, is part of the systems network architecture Server and is primarily responsible for handling the LU 6.2 security.
		Bind-time security, or in systems network architecture terms session level security, to prevent an unauthorized connection between two LU 6.2.
	www.boku.ac.at /oradoc/ias/10g(9.0.4)/integrate.904/b10410/oaicicssnaconcepts.htm (2691 words)

	UCLA - AIS Team Profile - Systems, Network, & Architecture (Site not responding. Last check: 2007-11-06)
		The Systems, Network and Architecture group is responsible for providing reliable, efficient and effective systems and networks for all of the AIS applications and services.
		The Distributed Platforms and Network Support Team's mission is to provide secure and reliable network infrastructure, highly available servers, connectivity and communications for AIS and its clients to access mainframe and distributed applications.
		Providing secure, reliable and redundant network connectivity for AIS and clients involves configuring and maintaining firewalls and intrusion detection systems, logging/monitoring events, reviewing activity reports, and ensuring that our workstations, servers and clients are up to date on operating system patches and virus protection software.
	www.ais.ucla.edu /ais/teamsna.htm (482 words)

	Define Systems Network Architecture - a Whatis.com definition - see also: SNA
		SNA is a proprietary IBM architecture and set of implementing products for network computing within an enterprise.
		With the advent of multi-enterprise network computing, the Internet, and the de facto open network architecture of TCP/IP, IBM is finding ways to combine its own SNA within the enterprise with TCP/IP for applications in the larger network.
		SNA includes the concepts of nodes that can contain both physical units that provide certain setup functions and logical units, each associated with a particular network transaction.
	searchdatacenter.techtarget.com /sDefinition/0,,sid80_gci214220,00.html (220 words)

	What is Systems Network Architecture (Site not responding. Last check: 2007-11-06)
		In IBM networks, Systems Network Architecture (SNA) is the layered logical structure, formats, protocols, and operational sequences that are used for transmitting information units through networks.
		SNA also controls the configuration and operation of networks.
		They can be used to connect the AS/400 with other IBM systems, or non-IBM systems, to connect remote controllers, and to maintain a high-level of security on your system.
	www.redbooks.ibm.com /pubs/html/as400/v4r5/ic2924/info/RZAJTRZAJTSNACON.HTM (77 words)

	Windows 2000: IBM Host Systems Interoperability
		SNA Server is the solution that has been developed by Microsoft for connecting personal computer–based clients and servers to IBM host systems.
		SNA is a computer networking architecture that was developed by IBM to provide a network structure for IBM mainframe, midrange, and personal computer systems.
		SNA communications that are based on the establishment and termination of logical sessions between network addressable units (NAUs).
	www.microsoft.com /technet/prodtechnol/windows2000pro/reskit/part5/proch26.mspx (5444 words)

	Network Architecture (Linktionary term) (Site not responding. Last check: 2007-11-06)
		Network architectures define the standards and techniques for designing and building communication systems for computers and other devices.
		In the past, vendors developed their own architectures and required that other vendors conform to this architecture if they wanted to develop compatible hardware and software.
		There are proprietary network architectures such as IBM's SNA (Systems Network Architecture) and there are open architectures like the OSI (Open Systems Interconnection) model defined by the International Organization for Standardization.
	www.linktionary.com /n/network_architecture.html (161 words)

	Communications News: IBM frees users from master-slave strictures of SNA - Systems Network Architecture (Site not responding. Last check: 2007-11-06)
		The second element is a new networking blueprint which provides a framework for integrating multivendor applications using different types of communications protocols into a single network.
		IBM claims there are 50,000 SNA networks in operation, so APPN is a critical migration path to network computing.
		IBM's networking goal is summed up by Don Haile, networking systems director for LANs: "(To help users) build their computer networks so that they can combine the productivity and ease-of-use of desktop applications with the data security and networking sophistication of mainframe-based computer centers."
	www.findarticles.com /p/articles/mi_m0CMN/is_n12_v29/ai_14191037 (735 words)

	SNA Jobs, Average Salaries for Systems Network Architecture (SNA) Skills
		SNA Jobs, Average Salaries for Systems Network Architecture (SNA) Skills
		Included is a guide to the average salaries offered in IT job ads that have cited SNA over the last 3 month to 21 March 2006 with a comparison to the same period last year.
		This section looks into the demand and provides a guide to the average salaries quoted in job ads citing SNA within the UK region over the last 3 months to 21 March 2006.
	www.itjobswatch.co.uk /jobs/uk/sna.do (209 words)

	Business Communications Review: SNA and WANs. (systems network architecture and wide area networks, includes related ... (Site not responding. Last check: 2007-11-06)
		The development of systems network architecture and wide area networks are linked.
		The newest wide area network developments will need to operate at high speeds with multiple protocols in order to carry traditional systems network architecture traffic.
		With so many data networking backbones based on SNA, the evolutionary paths of SNA and WANs are inexorably intertwined.
	www.highbeam.com /library/doc0.asp?DOCID=1G1:14840516&refid=holomed_1 (224 words)

	IBM Archives: 1974
		IBM announces Systems Network Architecture (SNA), a networking protocol for computing systems.
		SNA is a uniform set of rules and procedures for computer communications to free computer users from the technical complexities of communicating through local, national, and international computer networks.
		SNA becomes the most widely used system for data processing until more open architecture standards were approved in the 1990s.
	www-03.ibm.com /ibm/history/history/year_1974.html (258 words)

	1
		A node in an SNA network is known as a(n)___________________.
		The logical connection that exists between two devices on an SNA network is called a(n) ________.
		In an SNA network, a controller node is defined as a _____________________ node.
	www.softcom.net /users/fdamico/cis16achapt9.htm (325 words)

	UCB CS294-1 Deeply Embedded Network Systems - Fall 2003
		Embedded network systems, including sensor networks, distributed control applications, and ubiquitous computing environments, are becoming an important new computing class with wide ranging and novel applications.
		They present a range of computer systems challenges because they are closely coupled to the physical world with all its unpredictable variation, noise, and asynchrony; they involve many energy-constrained, resource-limited devices operating in concert; they must be largely self-organizing and self-maintaining; and they must be robust despite significant noise, loss, and failure.
		Adaptive Self-Configuring Sensor Networks Topologies, Alberto Cerpa and Deborah Estrin.
	www.cs.berkeley.edu /~culler/cs294-f03 (5334 words)

	Novell Documentation: ZENworks for Servers 2 - Systems Network Architecture Protocol Suite (Site not responding. Last check: 2007-11-06)
		The Systems Network Architecture (SNA) suite of protocols is described in the following table.
		An SNA client uses this protocol to communicate with an SNA server.
		An SNA node uses this protocol to check whether its peer SNA node is ready for communication and to exchange its station details with it.
	www.novell.com /documentation/zfs2/zfsadmin/data/a6shj4i.html (93 words)

	IBM SNA: Systems Network Architecture and SNA protocols
		SNA (Systems Network Architecture) is one of the most popular network architecture models, in addition to the OSI Model, proposed by IBM.
		Although SNA model is now considered a legacy networking model, SNA is still widely deployed.
		However, SNA model has only 6 layers and does not define specific protocols for its physical control layer.
	www.javvin.com /modelSNA.html (396 words)

	Get certified on open systems architecture
		At the heart of TOGAF is the Architecture Development Method (ADM), which defines the elements that make up an open systems environment: business architecture, data architecture, applications architecture, and technology architecture (covering systems, software and networks).
		The Open Group describes business architecture as how an organization is structured and motivated and architects help to develop open systems architectures that take into where the organization is and where it wants to be and define the IT systems that can help the organization to achieve its goals.
		Networks being tuned to play in complex global applications.
	www.networkworld.com /newsletters/edu/2005/0214ed1.html (929 words)

	A Network Architecture for Distributed Multimedia Systems (Site not responding. Last check: 2007-11-06)
		The VuNet is a gigabit-per-second desk/local-area ATM network which interconnects general-purpose workstations, network-based multimedia devices and bridges to other networks.
		During the course of an application, media streams are exchanged between the workstations and devices in a seamless manner.
		This architecture has several advantages over traditional workstation-centric systems including the ability to share multimedia devices and to reduce the burden of multimedia tasks on the workstation.
	www.tns.lcs.mit.edu /publications/ICMCS94b.html (114 words)

	What is SNA? - A Word Definition From the Webopedia Computer Dictionary (Site not responding. Last check: 2007-11-06)
		Short for Systems Network Architecture, a set of network protocols developed by IBM.
		Originally designed in 1974 for IBM's mainframe computers, SNA has evolved over the years so that it now also supports peer-to-peer networks of workstations.
		Network Liquidators: Cisco Network Management Products - Buys and sells used and refurbished network equipment, including Cisco network management products.
	www.webopedia.com /TERM/S/SNA.html (116 words)

	Common Communications Support in Systems Application Architecture
		Application execution in a Systems Application Architecture (SAA) network depends on the underlying capability of the network to obtain reliable connectivity and orderly data exchange among its system components.
		These architectures provide useful data interchange within SAA components by providing services ranging from managing data links to specifying data streams for user applications.
		This paper discusses the role of Common Communications Support and the means for SAA users to access this support, and provides an overview of the functions and roles of various component architectures of Common Communications Support, along with their interrelationships.
	domino.research.ibm.com /tchjr/journalindex.nsf/0/f9ad949f8a2ddfe285256bfa00685bf1?OpenDocument (139 words)

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