The “Glue” of Local Networking: A Visual Guide to ARP 💡
Ever wonder how your router actually delivers a packet to the right physical device? It’s not magic—it’s Address Resolution Protocol (ARP). In a Cisco environment, ARP is the essential bridge between Layer 3 (IP) and Layer 2 (MAC). If this bridge breaks, connectivity dies, even if your routing table looks perfect. I’ve put together a … Read more