In this post, I'm going to explain some core EIGRP topics that are poorly or even incorrectly documented in many resources including Cisco's documents, forums and books. This post will be loosely based on the topology in this Article. The focus will be on R4 and how it's seeing 192.168.10.0/24. For all routers, I configured EIGRP with (metric weights 0 0 0 1 0 0) to remove Bandwidth from the metric calculation to simplify this post. R4#sh ip eigrp top P 192.168.10.0/24, 1 successors, FD is 7680 via 10.1.42.2 (7680/5120), Ethernet0/2 via 10.1.41.1 (10240/5120), Ethernet0/1 R4#sh ip eigrp top all P 192.168.10.0/24, 1 successors, FD is 7680,