If you want to use the Network lab on the ground floor of IT/MT building for the assignment experiments, here is some useful information about the computers.

Only some computers currently allow booting to Ubuntu (at least 2, 3, 4, 12, 13, 15, 16). Once you boot into Ubuntu:

• Username: student
• Password: student
• Open a Terminal (Ctrl-Alt-T)
• Wired LAN IP can be seen by running:
  
  • ifconfig eth0
• Computers are currently connected via Ethernet to a switch, so you can immediately run iperf tests for the wired LAN
• To see Ethernet data rate, run (and look for "Speed"):
  • ethtool eth0
• iperf2 is already installed, run it as server mode:
  • iperf -s
• And as client mode:
  • iperf -c 10.10.16.2xx (where xx is your computer number of server)

For WiFi, there are some TP-Link wireless routers in the lab (ask the technician for a spare). Plug them in, and connect the yellow LAN cable from PC1 to the yellow switch port in the wireless router. PC1 --- Ethernet --- TP-Link --- Wifi --- PC2

For PC1, to get an IP address run:

sudo dhclient -r eth0
sudo dhclient eth0
ifconfig eth0

For PC1 you should get an IP address like 192.168.1.xxx. Open your browser (Firefox) and visit the wireless router web-page at http://192.168.1.1/

• Username: root
• Password: !ctnet1ab OR !ctnet1abw!f!

From the menu you can find and change the Wifi settings if necessary.

The name of the wireless AP is something like NetlabBlueAC2 (different devices will have different names, but starting with Netlab and then a colour).

On PC2, to connect via WiFi, do the following (make sure you use the correct wireless network name):

sudo ifconfig wlan0 up
sudo iw dev wlan0 connect NetlabBlueAC2
iw dev wlan0 link
iwconfig wlan0
sudo dhclient -r wlan0
sudo dhclient wlan0
ifconfig wlan0

Explanation of these steps is here. Now you should have an IP address like 192.168.1.yyy and can ping/iperf with PC1.