OPNET LAB 5 - John Jenkins CIT 370 OPNET Lab 5 March 3rd...

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John Jenkins CIT 370 OPNET Lab 5 March 3rd 2007
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Topic: o Comparing different design models to study the effects of hardware choices on a LAN. Objectives: o To compare the effects on the performance of a network when different choices are made in regard to hardware and design structures when planning a LAN. Implementation: o The initial model was implemented for a company with four departments, each having a 10 workstation LAN assigned as subnets with the four department names. Three servers (Database, Web and File) were used in a server subnet and connected via an ethernet switch using 10BaseT links. The four department subnets were connected to the server subnet via 100BaseT links and the size of the LAN was defined as 1 mile x 1 mile and named SimpleNetwork. Figure 5 – 1 shows the completed network. o The creation of the initial model was made possible using OPNET profiles which allowed for certain user modifications with pre-defined patterns of usage for each of the departments. Web server was assigned heavy and light web browsing, light email and light telnet. File server was assigned light file transfer and light file print, and the database server was assigned light database access. As no background traffic exists in the SimpleNetwork model, it was duplicated as BusyNetwork and assigned a background utilization of 99%.
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Figure 5–1 o
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OPNET LAB 5 - John Jenkins CIT 370 OPNET Lab 5 March 3rd...

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