ifconfigcommand to find out which are the network interfaces of your machine.
Choose another machine on your LAN and find out which are the network
interfaces of that machine.
What are the MAC addresses of those machines? What the IP addresses? To which network do they belong?
arpcommand to find out which addresses are in the ARP cache of your machine.
Send a broadcast ping across the LANs to which your machine is connected.
Did the content of the cache change?
routecommand to display the routing table of your machine.
netstatcommand to check out the network activities of our machine at the transport level.