A Video Studio Over Ethernet - Can it be done?

mikejz84 asks: "I am working on a design for a college campus TV station. Right now I am trying to find a way to do live events on campus. The link at most would be about a mile and a half. I was thinking microwave, but want something easier. Our campus has a gigabit ethernet backbone, I am wondering if there are any solutions for remote-to-studio links that would work over ethernet and still have very hight quality video? Idealy, I would like to have it where I can send straight DV across Ethernet Live."