Network 360 Ilabs

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?

• 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?

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

Control traffic receine description:

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

• 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?

• 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 to hide the graphs.

9. Type Ctrl+S to save the project.