Around Cumulus Networks we’re constantly talking about this thing called a Clos network. If you don’t know much about what those are, check out the following descriptions from Network World and Wikipedia:
They were a concept initially envisioned in the 1950’s by a gentleman working at Bell Labs named Charles Clos. Not a ton is known about Mr. Clos aside from the fact that his seminal paper in “The Bell System Technical Journal ( Volume: 32, Issue: 2, March 1953 )” A study of non-blocking switching networks went on to make waves in the Data Center Computer Networking space many years later as it turns out non-blocking telephone networks have a lot to do with modern Data Center design pillars.
It bothered me that were no images to be found anywhere on the internet of Mr. Clos. So one day I decided I would get this mystery solved. I reached out to Bell Labs with an e-mail explaining my academic interest in Mr. Clos and asking for a picture. Before the end of that very day I received a response containing this image.
Internet, I would like to introduce you to Mr. Charles Clos…
So there he is on the right, Charles Clos. I can sleep a little easier tonight putting a face to this much revered gentleman in the Data Center networking space.