Ilab 3 Report Network360

Lab Report

(1. In your opinion, what is the purpose of our dropping the Transmit Power to such a low level?

In the United States:

When using omni-directional antennas having less than 6 dB gain in mobile WLAN scenarios, the FCC rules require EIRP to be 1 watt (1,000 milliwatts) or less. The EIRP limitations for fixed, point-to-point systems that use directive antennas with at least 6 dBi gain is 4 watts.

( 2. What does Access Point Connectivity statistic collected for the roaming station show?

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• According to the graph we can see that data remained constants up to seconds 10 and 20, where the value decreased to -1. This value is recorded when a WLAN MAC is disconnected from an AP. The value changes to the new “BSS ID” when it is connected back to a new AP .

( 3. What do you think the Wireless LAN control traffic received by the roaming 11b node when it is in the Engineering building, is composed of?

[pic]

It contains random outocmes for the size of generated pakcets which in this case are specified as bytes.

Control traffic receine description:

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( 4. How much did our roaming node reduce the total throughput in our heavily loaded wlan?

[pic]

• According to the graph then throughput was at about 25,000,000 bits/sec up to about 10 seconds; the it decreased to 10,000,000 from 10s to 20 s. At about 20 s it increased to about 25,000,000 bits/sec again.

( 5. What caused this reduction in “goodput” on the 11g WLAN?

[pic]

• Interference of the roaming node caused a reduction in “goodput”. As we can see form the graph above, the throughput increased again as the roaming node left the engineering building.

8. Click Hide/Show Graph Panels button [pic] to hide the graphs.

9. Type Ctrl+S to save the project....