Let's say there are two PCs, PC A and PC B. PC A wants to communicate with PC B, such as sending a message. I need to describe the arp packets for this task.
PC A -> SW 1 -> Router -> SW 2 -> PC B
Host A and host B are in a different network
PC A : MAC Address a.a.a.a IP Address 220.127.116.11 Default gateway 18.104.22.168
PC B : MAC Address b.b.b.b IP Address 22.214.171.124 Default gateway 126.96.36.199
So, I wonder how the router would react to the arp packet. If PC A wants to send a message to PC B, it will first send an arp packet with its own MAC and IP addresses as source and PC B's IP address and zero value for the MAC address as destination.The ethernet packet would contain PC A's MAC and IP as source but then I don't know wheter the destination ip would be A's default gateway or it will be a broadcast like the MAC address? I believe that default configuration routers has the proxy arp disable. What would actually happen?