What is a Point-to-Point Subnet Mask? It’s the most efficient way to assign IPs when only two devices need to communicate — like router-to-router links in WANs. Instead of wasting an entire subnet, point-to-point links use /30, /31, or /32 to save addresses and optimize routing. 💡 Why Network Engineers Use It: ✔ Saves IP addresses ✔ Ideal for WAN links & router adjacencies ✔ Reduces broadcast traffic ✔ Common in OSPF, EIGRP, BGP deployments If you're preparing for CCNA, CCNP, SD-WAN, or ISP net