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Alternative Topologies

Alternative Topologies. By: Linda Chau. Alternative Topologies. Hierarchical topology Mesh topology FDDI topology Star-wired ring. Hierarchical Topology. Tree topology Linear bus and star topologies Allow expansion of an existing network. Hierarchical Topology. Advantages:

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Alternative Topologies

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  1. Alternative Topologies By: Linda Chau

  2. Alternative Topologies • Hierarchical topology • Mesh topology • FDDI topology • Star-wired ring

  3. Hierarchical Topology • Tree topology • Linear bus and star topologies • Allow expansion of an existing network

  4. Hierarchical Topology • Advantages: • Point to point wiring • Widely supported

  5. Hierarchical Topology • Disadvantages: • Segment length limited by cable type • Backbone failure – entire goes down • Difficult configurations and wiring

  6. Mesh Topology • Point to point topology • High reliability

  7. Mesh Topology • Advantages: • High demand • Self-healing capabilities • Multiplicity of paths • Disadvantage: • Expensive

  8. FDDI Topology • Fiber Distributed Data Interface

  9. FDDI Topology • Advantages: • Fiber optic cable at 100 Mbps • Point-to-point wiring • Support multiple tokens • Redundant circuit • 200 km – maximum distance

  10. FDDI Topology • Disadvantage: • Expensive • Requires extra fiber-optic interface • Limited scalability • Maximum 1,000 connections (500 nodes)

  11. Star-Wired Ring • Star topology

  12. Star-Wired Ring • Advantages: • Easy to install and wire • No disruption to network • Easy to detect faults and remove parts

  13. Star-Wired Ring • Disadvantages: • More cable length • If hub or concentrator fail - nodes disabled • Expensive

  14. Summary • All are point-to-point topologies • Generally expensive to implemented • Higher performance • Star-wired ring • FDDI • Greater reliability • FDDI • Greater flexibility • Star-wired • Hierarchical

  15. References • Data Networks and Client-Server Computing, AA Verstaete, http://www.smeal.psu.edu/misweb/datacomm/netstopo.html • Network Topology, Brian Brown, http://www.cit.ac.nz/smac/winnt/pt2_0.htm • Data Networks Topologies, Data & Managed Network Service, AAPT, www.net.appt.com.au/default2.htm • The International Engineering Consortium, Web ProForums Tutorial, http://www.iec.org/tutorials/point_mesh/ • Network Topologies, http://www.cm.cf.ac.uk/Dave/Internet/node46.html • Network Topologies, http://www.icoe.k12.ca.us/support/network/topology.htm • FDDI Topology, http://www.skatcon.com/computers/Networks/Network%20Topologies/nettop4.html • Network Connectivity SunFDDI, http://www.sun.com/products_n-solutions/hw/networking/connectivity/sunfddi/;$sessionid$okJ2QQAA

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