Earlham College Network

    This is a diagram of the Earlham College Network. As you can see, the backbone of the network is the multi-mode fiber that originates from the computing center in Lilly Library and terminates in various places all over campus. Most of the fiber is installed in the underground service tunnels not shown on this map. The number outside of the squares are the number of channels that go into the building. The numbers within the square indicate how many channel terminate within that building. For example, if we follow the fiber that runs into Dennis Hall, we see that 48 channels go into Dennis, but only 12 channels actually terminate there.
    The connections that go out side of the Earlham Campus are indicated by the frame relay circuit that goes to Infocom, the point to point circuit that goes to IHETS and the single-mode fiber that goes to RP&L and ultimately Infocom. The frame relay circuit and the point to point circuit both come into the Computing Center (marked CC on the diagram) in Lilly Library. The single-mode fiber patches into the network at the IDF near Admissions South.
    One problem with this design is that there is a single point of failure, Lilly Library. If anything should happen to the connections at Lilly Library, then the network goes down. For example, if the connection between Lilly and Dennis is severed, then Dennis, Wildman, Stanely, and Tyler will be cut off from the network, while everyone else stays on, provided that their connections are not cut. That may change in the future.