6. Classless Classful Routing

Understand one of the most fundamental distinctions in IP routing — classful vs classless! This video breaks down how each approach handles subnet masks, route advertisements, and address summarization for the CCNA exam! In this video, you'll learn: - What classful routing is and how it works - What classless routing is and how it differs from classful - How classful routing protocols handle subnet masks in route updates - How classless routing protocols include subnet masks in route updates - What auto-summarization is and why it causes problems in classful routing - How discontiguous networks are affected by classful routing - Why classless routing is the standard in modern networks - Which routing protocols are classful and which are classless Classful vs classless routing is a topic that affects how routing protocols advertise routes, how summarization works, and whether your network can support VLSM. This video makes sure you understand the difference clearly before diving into protocol-specific configuration.