using multiple xdi pods in same room

is it possible to use two Xfi pods in the same room? I need to run ethernet cables to two separate devices and would like to use the ethernet ports on the pods. When i tried this last night, only one pod would work at a time. If this is not possible, i have a cable line coming into the room that normally goes into the cable box. Is there another way to get ethernet to the two devices via the cable line? Many thanks.