What does ARP do
Resolve IP to MAC using a mapping table
Where is the table stored
In RAM
How can the table be cleared
Manually or by the Cache timer of the OS
What is an ARP-request
Broadcast
What is an ARP-reply
Unicast
What is in the ARP Header of the reply
The sender’s (target) IP and MAC
What is in an ARP Header
Target IP and MAC
What happens when ARP tries remotely
Use IP of gateway to get its MAC