Hi Mike/Drew,
We also have lots of experience with FS.com switches; however.. One thing we noticed really quick is that its better to order 1 and to find the actual supplier and order with them directly. FS.com is a reseller; and they will switch (no pun intended) supplier almost yearly. Real technical support is nonexistent (even though they claim it is great) and I have yet to have a single bug fixed; packet dumps and steps to reproduce included. I have removed all of our N5850-48S6Q due to bugs in software lockups.
Their current
S5850-48S6Q is developed by Centec Neworks (
http://www.centecnetworks.com/en/SolutionList.asp?ID=91 ) and is the E580-48X6Q (compare the changelog and manual; you will see its a "replace all" job). These switches do actually support LDP/MPLS/VPLS if you buy the license and run them in their 'ipran' profile. Feel free to contact me off list if you have any questions.
Kind regards,
Nick ten Cate