401notfound not have long to give an article about Cisco, on occasion this time I will explain about the Administrative Distance, Administrative Distance is a numeric value that specifies the preference of a particular route, It's a calculated value used to determine the best path to a destination, each routing protocol has an administrative distance separately. In the example above picture there are EIGRP and RIP protocols , when a PC with a network 192.168.3.0/24 to send packets to the 192.168.6.0/24 network packet routing who to use is EIGRP will pass this is because the Administrative distance is smaller than the Administrative Distance to the RIP.