Every second, billions of Internet Protocol (IP) packets travel across networks around the world carrying web traffic, voice, video, cloud services, streaming media, gaming traffic, and countless other forms of communication. But how do these packets know where to go? How do routers determine the best path across complex networks containing countless links, circuits, fiber paths, wireless systems, and interconnected providers? Understanding this process is fundamental to understanding how modern IP networks and the Internet actually operate.

This course provides a practical introduction to IP routing and the critical role routers play in forwarding packets across interconnected networks. Students will learn how routers build routing tables, make forwarding decisions, and dynamically learn network paths using routing protocols operating within the control plane. The course introduces key routing technologies and protocols including RIP, OSPF, and BGP while explaining how routers use shortest path calculations, routing metrics, and topology information to efficiently deliver packets to their intended destinations.

Throughout the course, students will gain foundational knowledge of how routing decisions are made, how routers exchange information with one another, and how large-scale packet networks maintain connectivity and resiliency. The material is presented in a clear and understandable format designed for students, technicians, engineers, and technology professionals seeking to strengthen their understanding of IP networking fundamentals.

Whether you are new to networking or looking to build a stronger foundation in packet forwarding and Internet operations, this course will help you better understand the technologies and protocols that allow modern networks and the global Internet to function.