The classroom lights dim. A single projector hums to life, and Jeremy Cioara’s familiar voice cuts through the quiet—equal parts clarity and contagious enthusiasm. The title slide blinks: "BGP Deep Dive — Cisco CCIP (642-661)." For many students this course begins as a tangle of autonomous systems, path attributes, and bewildering prefix permutations. For the curious few, it becomes a map of the internet’s spine.