Software Defined Networking (SDN) Made Simple

Import the Mininet VM into VirtualBox to set up the SDN lab. Test the Mininet topology and ping all hosts, then verify the POX hub controller runs correctly.

Explore the reversed topology in mininet with mn --topo=reversed,3, creating a single switch with three hosts in reverse order, then verify connectivity with pingall and inspect links.

Configure a switch application without a controller using ovs-ofctl, adding MAC-to-port flows and ARP flooding, and validate with Mininet pingall.

Learn to create a custom Mininet topology with MiniEdit, wiring switch S1 and hosts h1, h2, h3, h4 at 172.24.0.1 to 172.24.0.4, connected to a controller, without coding.

Explore how to build a hub application with a POX controller using the PacketOut method, compare reactive packet-out flooding with FlowMod, and observe hub behavior in a simple LAN topology.

Explore the POX hub application's proactive method, using connection up and hub-proactive or hub.py, and contrast it with reactive flow handling in a test topology.

Develop a layer-2 firewall with the POX controller by extending the switch app and enforcing MAC-address-based rules from firewall-mac-policies.

Remotely access a Mininet VM in text mode from a GUI host using ssh -Y for X forwarding, verify IPs, and create a single-switch, four-host topology with xterm terminals.

Set up a mininet lab with one switch and two hosts, run the POX controller and l2_learning, and capture OpenFlow traffic with Wireshark on loopback.

Illustrates how a hub floods traffic in network using packet tracer, highlighting its lack of intelligence and no memory of which port a host is attached to, versus a switch.

Set up a virtual Ubuntu 14.04 server in VirtualBox, configure NAT networking, allocate 1 GB RAM and 10 GB disk, enable OpenSSH server, and update repositories.