This paper describes the design of Sapheniea, a framework that enables network administrators to easily implement policies in large-scale networks. The goal of Sapheniea is to capture as much configuration information as possible into a single parameter, which we define as class. The key idea is to categorize network traffic into different classes and embed the same class parameter as a configuration knob in routing. Network administrators only need to define the various classes, specify the relationship between them, and assign classes to links. In this paper, we provide two applications that illustrate how Sapheniea can be used in enterprise networks to perform: (a) access control within a domain; (b) traffic channeling through choke-points.