Wireless Access Points & Laptops

From OpenFlow Wiki

Wireless Access Points

Wireless access points used in the demo is based on NOX-Box.

Setup

Interface name: When you face to the ethernet ports on Nox-Box (there are two or three ethernet ports), the rigthtmost port is eth0. The port on the left to eth0 is eth1. The next (if there is) is eth2. We'll use eth0 for OpenFlow interface and eth1 for controller interface. We don't user eth2 here. We also assume there is only one radio card and the interface name is ath0.

Step1 Download boot image from here (Note: This image is slightly changed from the origial image prvided from noxrepo.org. If you're interested in what has been changed, goto here)

Step2 Write the boot image to CF(Compact Flash). Prepare 2GB CF card and do the following (device name /dev/sdc may be different in your environment)

dd if=bootimage of=/dev/sdc bs=20M

Step3 Change configuration files

• /noxbox/conf/noxbox.conf (linked from /etc/noxbox.conf)
• /etc/hostapd/hostapd.conf

Step4 Create following startup scripts

• /root/of_setup.sh
• /root/of_teardown.sh

Start OpenFlow

cd /root
./of_setup.sh

Note: You have to be a superuser.

Stop OpenFlow

cd /root
./of_teardown.sh

Note: You have to be a superuser.

Laptops

To Do

• Create image file incorporating all the modification to the original image
• Solve issue when "MAGIC_AP_BRIGE=off" (broadcast pkt from ath0 should be flooded to ath0 as well)