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 18.104.22.168 Default gateway 22.214.171.124
PC B : MAC Address b.b.b.b IP Address 126.96.36.199 Default gateway 188.8.131.52
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?