Hi,
As best as I can tell, that mirror list is correct. It's just that some/most of those mirrors won't actually be carrying content for Fedora 16 any longer. You'd have to go through each of them, find one that actually works and has all the relevant folders/content still there, then update your Yum repo file to directly use that one.
For example,
ftp.heanet.ie seems to have all the Fedora 16 content still. The main packages can be found here:
http://ftp.heanet.ie/mirrors/fedora/...4/os/Packages/
However, that brings us on to the second issue. You say you want to install LANforge. That was never a standard part of Fedora, and is not part of the Fedora 16 main OS repo (or the repo of any other release of Fedora, as best as I can tell). No doubt it has various pre-requisites that you'll need from the main Fedora repo (or so I imagine: I've never heard of or dealt with LANforge before, so my only knowledge of it comes from a quick Google search just now). But LANforge itself won't be directly installable via
yum from the official Fedora repos, even when you do get them working again.