M14 - Layer 3 and Routing Concepts - Cisco CCNA Routing & Switching скачать в хорошем качестве

M14 - Layer 3 and Routing Concepts - Cisco CCNA Routing & Switching

nderstand how routers make decisions and move packets across a network in this step-by-step guide to the routing process. In this video, we explore the router’s decision loop, from how routes are learned to how packets are forwarded at each hop. You’ll learn about the learning phase, where routers build routing tables using connected, static, and dynamic routes. We also explain administrative distance and how routers decide which route to trust when multiple paths exist. The lesson includes the “longest match” rule, showing how routers choose the most specific route for a destination. On the forwarding side, we break down the encapsulation lifecycle, how IP addresses stay the same while MAC addresses change at every hop, and how Cisco Express Forwarding (CEF) speeds up packet delivery. Perfect for CCNA students and networking beginners, this video provides a clear understanding of how routers actually move traffic.