1. Create a topology of a single switch and two hosts. 
2. In the running Wireshark, filter traffic with openflow_v4 (means OpenFlow version 1.3).

1. Capture HELLO messages. Identify IPs, port numbers, and other details. 
2. Which features are replied to controller by the switch? What does it mean? 
3. Find status of the switch and ports. Are they ACTIVE or DOWN? Why (briefly explain)? 

Do the ping from h1 to h2. Is it successful? 

Check status of the ports again. Are they ACTIVE now?

1. After doing PING, an ARP request goes to the controller from the switch, why? 

Explain the details of that packet.