In this Tour de Force review and tutorial on Cisco Networking Academy’s Packet Tracer 1.4.1.3 (for the CCNA4 Connecting Networks course) we spend a solid two (2) hours in a deep dive look at the 2nd Skills Integration Challenge (SIC) of the course. We review EIGRPv4 and EIGRPv6, passive interfaces, summarization, and default route generation. We then transition to the 2nd half of the activity which reviews the core concepts of Layer 2 configuration by setting up VLANs, EtherChannel (PAgP), port security, and trunking. Be sure to buckle your chin strap for this one! Enjoy!