Most routing protocols have metric structures and algorithms that are not compatible with other protocols. In a network with multiple routing protocols, the exchange of route information and the capability to select the best path across the multiple ...
http://www.ebrahma.com/2013/10/administrative-distance/Labels: Administrative-distance-rates-a-routing-protocol, Administrative-Distances, Cisco-routers-use-a-value-called-administrative-distance, Each-routing-protocol, metric-structures-and-algorithm, routing-protocol