How IP Routing Actually Works (Host and Router Logic Explained)

IP Routing defines the logic for forwarding IP packets from the originating host to their final destinations. The logic sits just far enough above the physical transmission details, so it remains consistent regardless of the physical layer technologies used throughout the entire route. New physical and data link layer technologies may come and go, but IP routing has remained a fundamental component of how networks operate for over forty years. This video discusses the foundational concepts of how IP routing works. The logic runs from the source host to the first router (the source host’s default router), then to the next router, and so on, until the final router forwards the packet to the destination host. The logic differs between hosts and routers, with slight variations in logic between intermediate routers and the final router. This video touches on all those concepts, and more! 📘 Matches CCNA Official Cert Guide: Volume 1 Chapter 3 Section 2 Chapters 00:00 Intro 01:09 Subnetting Rules Aid IP Routing 04:09 IP Routing Protocols Aid IP Routing 07:56 IP Routing: Host Logic 12:49 IP Routing: Router Logic 13:48 CCNA Study Group Advice Interview Review Referenced in the Closing Section 📽️    • CCNA Interview Review: IP Routing on Hosts...   ======================================== Product Links Product links below. I make a small affiliate sales commission if you buy something! CCNA Library (Two Book Set): 📚 https://ccna.link/nu-cp-lib-ed2 All CCNA products at Cisco Press: 🖨️ https://ccna.link/nu-cp-allccna All Wendell's products at Cisco Press: 🧔🏼‍♂️ https://ccna.link/nu-cp-allwo Ciscopress.com/NewCerts Page (News, Announcements): 📰 https://ccna.link/nu-cp-newcerts =========================================