ns3 network simulator - Example tutorial 1 (PointToPoint) explained.

Following from my previous video, here are the details of how ns3 simulator creates net devices. I discuss the ns3 example tutorial "first.cc" under "/examples/tutorial/first.cc" in more details, discussing how nodes, devices and channels are created. The example uses a two nodes, each node have a PointToPointNetDevice and PointToPointChannel with UdpEcho client .& server installed on these two nodes.