by OVS is a programmable Openflow switch that can be controlled via SDN Controller from anywhere in the world.
Step 1: Download the TAR file
wget http://openvswitch.org/releases/openvswitch-2.7.0.tar.gz
Step 2: Unzip and navigate to openvswitch folder
tar -xvf openv
Step 3: Make sure you have super user privileges
sudo su
Step 4: Install the following packages which are necessary for running openvswitch in your Raspberry Pi
apt-get install python-simplejson python-qt4 libssl-dev python-twisted-conch automake autoconf gcc uml-utilities libtool build-essential pkg-config
Step 5: Check the Kernel Release of the OS(eg:-linux-headers-4.9.0.4-rpi ) and copy it and run the following commands
uname -r
apt-cache search linux-headers
apt-get install -y linux-headers-4.9.0.4-rpi
Step 6: Configure and Build the kernel module
./configure --with-linux=/lib/modules/4.9.0.4-rpi/build
Step 7: Make Install
make
make install
Step 8: Browse into datapath/linux located inside the extracted openvswitch folder and run the following commands
cd datapath/linux
modprobe openvswitch
cat /etc/modules
echo "openvswitch" >> /etc/modules
cat /etc/modules
Step 9: Navigate back to openvswitch folder and create a ovs database file by running the following commands
cd ../..
touch /usr/local/etc/ovs-vswitchd.conf
mkdir -p /usr/local/etc/openvswitch
ovsdb-tool create /usr/local/etc/openvswitch/conf.db vswitchd/vswitch.ovsschema
Step 10: Create and open a file named “script” using nano or any editor of your choice(Make sure you have superuser privileges when you run the command)
nano script
Step 11: Copy-paste the following codes into the file named “script”
ovsdb-server --remote=punix:/usr/local/var/run/openvswitch/db.sock \
--remote=db:Open_vSwitch,Open_vSwitch,manager_options \
--private-key=db:Open_vSwitch,SSL,private_key \
--certificate=db:Open_vSwitch,SSL,certificate \
--bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert \
--pidfile --detach
ovs-vswitchd --pidfile --detach
ovs-vsctl --no-wait init
ovs-vsctl show
Step 12: Save the file by hitting Ctrl+o and exit the editor by hitting Ctrl+x
Step 13: Create the executable version of the file and run it
chmod +x script
./script
That’s it. Your Openvswitch would work every time you run the script file.
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Rohit Kumar Das currently working as Assistant Professor in VIT-AP University, Andhra Pradesh, India. Obtained his Ph.D. degree from North-Eastern Hill University, Meghalaya, India. His area of interest are Internet of Things, Software-Defined Network, Big Data and Blockchain.
