10-05-2012, 11:57 AM
QUALNET
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MANET
MANET" redirects here. For other uses, see Manet (disambiguation).
A mobile ad hoc network (MANET) is a self-configuring infra-structure less network of mobile devices connected by wireless links. Ad hoc is Latin and means "for this purpose". [1] [2]
Each device in a MANET is free to move independently in any direction, and will therefore change its links to other devices frequently. Each must forward traffic unrelated to its own use, and therefore be a router. The primary challenge in building a MANET is equipping each device to continuously maintain the information required to properly route traffic. Such networks may operate by themselves or may be connected to the larger Internet.
MANETs are a kind of wireless ad hoc networks that usually has a route able networking environment on top of a Link Layer ad hoc network.
The growth of laptops and 802.11/Wi-Fi wireless networking has made MANETs a popular research topic since the mid-1990s. Many academic papers evaluate protocols and their abilities, assuming varying degrees of mobility within a bounded space, usually with all nodes within a few hops of each other. Different protocols are then evaluated based on measure such as the packet drop rate, the overhead introduced by the routing protocol, end-to-end packet delays, network throughput etc.
QualNet Capabilities
QualNet Developer is ultra-high-fidelity network evaluation software that predicts wireless, wired and mixed-platform network and networking device performance. Designed to take full advantage of the multi-threading capabilities of multi-core 64-bit processors, QualNet supports simulation of thousands of network nodes.
QualNet offers unmatched platform portability and interface flexibility. QualNet runs on sequential and parallel UNIX, Windows, Mac OS X and Linux operating systems, and is also designed to link seamlessly with modelling/simulation applications and live networks.
Components of QualNet Developer
QualNet Architect: Design Mode allows users to set up terrain, network connections, subnets, mobility patterns of wireless users, and other functional parameters of network nodes. Users can create network models by using intuitive, click and drag operations. Users can also customize the protocol stack of any of the nodes and can specify the application layer traffic and services that run on the network. QualNet Architect: Visual Mode gives the user opportunities to perform in depth visualization and analysis of a network scenario designed in Design Mode. As simulations are running, users can watch packets at various layers flow through the network and view dynamic graphs of critical performance metrics. Real-time statistics are also an option, where users can view dynamic graphs while a network scenario simulation is running.
QualNet Analyzer is a statistical graphing tool that displays the metrics collected during the simulation of a network scenario in a graphical format. You can customize the graph display. All statistics are exportable to spread sheets in CSV format. QualNet Packet Tracer provides a visual representation of packet trace files generated during the simulation of a network scenario. Trace files are text files in XML format that contain information about packets as they move up and down the protocol stack.