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NetworkSetup.md

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Network Setup:

Task 1:

Installing OVS on Raspberry pi:

Make sure Raspberry pi is connected to the internet.

$ sudo apt-get install openvswitch-switch
  • Check whether OVS is properly installed in Raspberry Pi. To check run the command below
$ ovs-vsctl add-br ovs-br1

OVS installation done:

Assigning IP to Raspberry pi:

  1. Using DHCP server: If raspberry pi is able to get IP address from some DHCP server and a IP will be assigned to raspberry pi.
  1. Assigning Static IP address:
$ sudo vim /etc/dhcpcd.conf
  • Insert the details below in /etc/dhcpcd.conf file. Change the parameters according to your network.
interface eth0
static ip_address=192.168.1.4/24
static routers=192.168.1.1
static domain_name_servers=192.168.1.1

Connecting OVS with controller:

$ ovs-vsctl set-controller <BRIDGE> tcp:$CONTROLLER_ADDRESS:$CONTROLLER_PORT

For assinging multiple controllers to OVS:

$ ovs-vsctl set-controller <BRIDGE> tcp:$CONTROLLER_ADDRESS1:$CONTROLLER_PORT1 \
tcp:$CONTROLLER_ADDRESS2:$CONTROLLER_PORT2 \
tcp:$CONTROLLER_ADDRESS3:$CONTROLLER_PORT3 ...

Creating bridge and creating ports/Interfaces and assigning IP addresses to them

  • Creating a bridge
$ sudo ovs-vsctl add-br <BRIDGE_NAME>

When a bridge is created using OVS, by default a port of same name is created i.e when a bridge named br0 is created so port named br0 is created and it has interface br0.

  • Connecting bridge to eth0
$ sudo ovs-vsctl add-port <BRIDGE_NAME> eth0
  • Adding a new port, Internal Interface to an existing bridge
$ sudo ovs-vsctl add-port <BRIDGE_NAME> <PORT_NAME> -- set Interface <PORT_NAME> type=internal
$ sudo ip link set <PORT_NAME> up 
            or 
$ sudo ifconfig <PORT_NAME> up
  • Adding an IP address to an Interface
$ sudo ip addr add 192.168.0.123/24 dev <PORT_NAME>
            or
$ sudo ifconfig <PORT_NAME> 192.168.0.123 netmask 255.255.255.0
  • Adding default gateway to an Interface
$ sudo ip route add default via <GW> dev <Interface>
  • Removing an IP address assigned to an Interface
$ sudo ifconfig <PORT_NAME> 0
  • Listing all Interfaces
$ sudo ovs-vsctl list Interface

Installing OpenVirteX for Network Slicing:

Use this link for installing and starting OpenVirteX.