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The use of wireless and Ethernet in industrial and plant floor environments has grown dramatically in the last few years. Industrial users face a wide range of options when designing and implementing plant-level wireless and Ethernet networks. Great success is being achieved using wireless provided certain ground rules are applied such as ensuring a robust wireless link, correct integration with the wired communications systems and proper data security. The most important objective of wireless communications networks must be to achieve similar capacities, bandwidths, responsiveness, reliability and availability to that of wire based communications with an emphasis on the unique needs and challenges faced by industrial networks. This workshop commences with an overview of wireless communications and how radio works, “Wireless Local Area Networks” or WLANs (IEEE 802.11) are then examined. A practical discussion of Ethernet has been added as this is always a key ingredient in a successful wireless implementation strategy. Ethernet is the obvious choice for industrial control networking worldwide. While the basic structure of Ethernet has not changed much, the faster technologies such as fast Ethernet and gigabit Ethernet have increased the complexity and choices you have available for planning and designing these systems. Finally the all important topic of troubleshooting of wireless and Ethernet networks is examined with a summary of the typical problems you are likely to encounter from a two station network all the way up to a system comprising 30,000 PCs. This workshop addresses these issues in a clear and practical manner, thus enabling you to apply the technology quickly and effectively in your next project. At the end of the workshop you should have a clear understanding of the choices available to you in designing and implementing your own wireless and associated Ethernet networks. MORE INFORMATION: http://www.idc-online.com/content/practical-wireless-ethernet-and-tcpip-networking-27
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Practical Wireless, Ethernet & TCP/IP Networking
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Types of Computer Networks• LANs (Local Area Networks)
Network interconnecting computers located in a small geographical area Example: Ethernet network in office
• MANs (Metropolitan Area Networks) Network interconnecting computers located at medium distances from each other Example: FDDI around perimeter of city
• WANs (Wide Area Networks) Network interconnecting computers located at large distances from each other Example: LANs via T1/ ATM/ X.25/ Frame Relay
• WLANs (Wireless LANs) Wireless networks supporting LAN, MAN and WAN infrastructures Example: Wi-Fi (IEEE 802.11b, a, g)
• PANs (Personal Area Networks) Network covering a very small area Example: Bluetooth devices in a room
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OSI Layering Concept
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Relationship between Layers, Entities, Functions and SAPs
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Principles to Determine Layers OSI Model Should Encompass
• A layer should be created where a different level of abstraction is required
• Each layer should perform a well-defined function• The function of each layer should be chosen with thought
given to defining internationally standardized protocols• The layer boundaries should be chosen to minimize the
information flow across the boundaries• The number of layers should be large enough that distinct
functions need not be thrown together in the same layer out of necessity and small enough that the architecture does not become unwieldy
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OSI Reference Model
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Service Primitive
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Peer Layer Interaction in the OSI Model
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OSI Message Passing
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OSI Layer Services
• Application layer• Presentation layer• Session layer• Transport layer• Network layer• Data link layer• Physical layer
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Ethernet • Presently the dominant LAN technology
• Provides: a set of physical media definitions a scheme for sharing that physical media a simple frame format and hardware source/destination
addressing scheme
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TCP/IP Protocol Suite • Consists of several protocols that provide routing services, end-
to-end verification of transmitted data, and interfacing services
to the stack for clients and servers • Some of the protocols in the suite are:
TCP – A connection-oriented transport protocol UDP – A connectionless transport protocol
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Wireless LAN’s
• Some wireless technologies are: Wi-Fi (IEEE 802.11b, a, g) IEEE 802.16 (WiMax) Small dish satellite (VSAT) Mobile wireless Wireless PANs (Bluetooth, wireless USB and ZigBee)
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Advantages of Wireless Technology
• Mobility• High degree of accessibility • Reduced installation costs
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DO YOU WANT TO KNOW MORE?
If you are interested in further training or information, please visit:
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