The training, led by the legendary Jeremy Cioara , remains one of the most iconic and effective resources for mastering the Border Gateway Protocol (BGP). While the specific 642-661 exam has been retired as part of Cisco's certification evolution, the fundamental BGP concepts taught in this course continue to be the backbone of modern internet routing and service provider networks. Why This Training Stands Out
: Simplifies "Transit AS" concepts and how BGP interacts with IGPs like OSPF or EIGRP.
: Even though the CCIP track was replaced by the CCNP Service Provider and later the CCNP Enterprise, this specific series is often cited by network engineers as one of the best "foundational" explanations of BGP ever recorded.
. If you were an aspiring network engineer in the mid-to-late 2000s, this specific course——wasn't just a training video; it was a rite of passage . The Setting: The "Wild West" of the Core
Jeremy’s explanation of the "AS-Path" and how BGP prevents loops is often cited as the clearest in the industry.