Setting up SDN network using OpenVSwitch (2.17.2) on Raspberry Pi running with Raspbian OS

instructions_commands.txt

### Download the most recent OpenvSwitch from LTS series  [https://www.openvswitch.org/releases/openvswitch-2.17.2.tar.gz]
wget http://openvswitch.org/releases/openvswitch-2.17.2.tar.gz
tar -xvzf openvswitch-2.17.2.tar.gz
cd openvswitch-2.17.2

### Install all dependencies:
sudo apt-get install python-simplejson python-qt4 libssl-dev python-twisted-conch automake autoconf gcc uml-utilities libtool build-essential pkg-config

### if python-simplejson python-qt4 python-twisted-conch fail to install then manually install them using pip.
pip install simplejson
pip install python-qt
pip install Twisted

### Build openvswitch: if fails then try with sudo (root permissions)
./configure
make -j4
make -j4 install

### Set up local variables:
cd datapath/linux/
modprobe openvswitch
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
mkdir -p /usr/local/var/run/openvswitch


### Create starting master script:
sudo nano /etc/init.d/superscript.sh

"""
#!/bin/bash

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-vsctl --no-wait init
ovs-vswitchd --pidfile --detach
ovs-vsctl show
"""

### Start openvswitch service:
/etc/init.d/superscript.sh


### Set up starting openvswitch on boot:
/etc/init.d/superscript
sudo chmod 755 /etc/init.d/superscript
sudo update-rc.d superscript defaults

###Configuring and Starting the Switch
###Add a new bridge
ovs-vsctl add-br br0

###Connect USB-to-ethernet to the pi. Note their interface names; say it’s eth1, eth2
###Connect the interfaces to the bridge
ovs-vsctl add-port br0 eth1
ovs-vsctl add-port br0 eth2

#Turn on the interfaces
ifconfig eth1 0 up
ifconfig eth2 0 up

###Connect the switch to an external controller running on host with IP 10.10.20.20 in this case
ovs-vsctl set-controller br0 tcp:10.10.20.20:6633

###The OpenFlow switch is now running and can be checked from top/htop or system resource monitor

## Turning on the switch the next time when you reboot
### run master script e.g. superscript.sh
sudo ./etc/inint.d/superscript.sh

###Turn on all the OVS interfaces in each switch (eth1, eth2)

### Pro Tips: 
1. Manually assign IP to host that you connect with USB LAN adapters. Also you may assign IP to eth0 port (Pi's LAN port). 
2. Try to check connectivity b/w switch-eth0 and controller, and host to host connected on USB LAN adapters.

Sir you might have to add one line before creating the scipt.
mkdir -p /usr/local/var/run/openvswitch

Noted and corrected the same in [instructions_commands.txt].

Sir you might have to add one line before creating the scipt. mkdir -p /usr/local/var/run/openvswitch

Line 75: sudo ./etc/inint.d/superscript.sh
Do you mean init.d instead of inint.d?