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This Concept Map, created with IHMC CmapTools, has information related to: chp13, WAN Technologies and Routing three broad catergories Local Area Network(LAN)-can span a single building or campus., instead of using a point-to-point leased data circuit that connects one computer directly to another, a WAN is constructed from many switches to which individual computers connect. using Packets switches which moves a complete packet from one connection to another., Next-Hop Forwarding: where given switch has information about the next place(hop)to send a packet so the packet will eventually reach its destination. info is stored on a Routing table, WAN Technologies and Routing three broad catergories Wide Area Network(WAN) -can span sites in multiple cities,countries, or continents, Wide Area Network(WAN) -can span sites in multiple cities,countries, or continents Example technologies Switched Multi-megabit Data Service (SMDS)- is another high-speed wide area data service offered by long distance carriers., Wide Area Network(WAN) -can span sites in multiple cities,countries, or continents Example technologies Asynchronus Transfer Mode(ATM)-provides another example of a wide area network technology., Routing table How is it constructed Static routing: a program computes and installs routes when a packet switch boots; the routes do not change, Wide Area Network(WAN) -can span sites in multiple cities,countries, or continents Example technologies X.25, Wide Area Network(WAN) -can span sites in multiple cities,countries, or continents communication Physical Address: each computer connected to a WAN is assigned a physical address, Routing table How is it constructed Dynamic routing: a program builds an inital routing table when a packet switch boots; the program then alters the table as conditions in the network change., instead of using a point-to-point leased data circuit that connects one computer directly to another, a WAN is constructed from many switches to which individual computers connect. fundamental paradigm Store and forward switching: packets arriving at a switch are placed in a queue until the switch can forward them on toward their destination., Wide Area Network(WAN) -can span sites in multiple cities,countries, or continents Example technologies ARPANET:the first packet switched network WAN, Routing table guarantees Optimal routing: In a switch, the next-hop value in the routingtable for a given destination must point to the shortest path to the destination., Routing table guarantees Universal routing: the routing table switch must contain a next-hop route for each possible destination, Wide Area Network(WAN) -can span sites in multiple cities,countries, or continents Example technologies Frame Relay: is designed to accept and deliver blocks of data, Wide Area Network(WAN) -can span sites in multiple cities,countries, or continents communication Next-Hop Forwarding: where given switch has information about the next place(hop)to send a packet so the packet will eventually reach its destination., Wide Area Network(WAN) -can span sites in multiple cities,countries, or continents How does it handle many computer's instead of using a point-to-point leased data circuit that connects one computer directly to another, a WAN is constructed from many switches to which individual computers connect., WAN Technologies and Routing three broad catergories Metropolitian Area Network (MAN)-can span a single city