I've seen some good deals on new and used routers there. I went to networkdna site but only got their directory listing, not a home page. I would like ya'll to punch the networking part of the site. The Linux Router Project has some merit to it. Putting Linux on an ol' 486 take out the harddrive and somehow you have an efficient router.
People can be resourcefull when needed.
You can't turn back now, the fever has gotten hold of you. Checked it out and looks like you perform the labs on actual routers. Hope this helps. Wayne has a good idea. This site can be used to simulate a router.