Student Name: David M. Fontanez Date: Jan 29, 2015SEC450 Wireless Roaming iLab Report

Task 1Configure DES Global and Node Statistics Under Node Statistics, select Data Traffic Received (bits/sec) and Throughput (bits/sec). Capture a copy of the completed Choose Results dialog ( ) and paste it into your lab document.

Task 2Run the Discrete Event Simulation Use to capture a copy of the Simulation Execution dialog shown below and paste it into your lab document.

Task 3Analyze the WLAN and WAP DES Results

Under Global Statistics for the Wireless LAN, select Delay and Throughput. Make sure that the presentation is set to Stacked Statistics. Use to capture this DES Graphs window and paste it into your lab document.

What is the average Throughput for the Wireless LAN?

700,000 bits per second

When does the largest delay in the Wireless LAN occur?Once the simulation was ran, according to simulation time; the biggest delay occurred at 30th second after the simulation was started. The delay was .8 sec or 800 millisecond which is obviously huge.

Under Object Statistics, select Group A WAP / Data Traffic Recvd (bits/sec) and Group B WAP / Data Traffic Recvd (bits/sec). Change the presentation style to Overlaid Statistics. Use to this DES Graphs window (as shown below) and paste it into your lab document.

When does the Group A WAP traffic dip begin? Starts at 0 second of simulation time

When does the Group A WAP traffic dip end? It finishes at 1 minute and 40 seconds

What server traffic accounts for the peak in Group B traffic? Server for B Group

Task 4Analyze the Group A and Group B Server Throughput Under Object Statistics, select Server for A Group / Throughput (bits/sec) and Server for B Group / Throughput (bits/sec). Change the presentation style to Stacked Statistics. Use to this DES Graphs window (as shown below) and paste it into your lab document.

Explain the drop in Throughput for the Server for B Group at about 65 seconds.

The server roamed to WAP for group A therefore we see a traffic load drop at 65th second. Consequently; the load on WAP for Group A increased and the load for WAP for Group B decreased. _______________________________________________________________________________

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