Re: Making Real Networks From Virtual Things
Thanks for this, Tom. At first glance, what you have here may appear to be a general overview of all the basics of virtual networks that we already know and love (or, loathe). Taking a look at the full version on No Jitter revealed to me, though, a comprehensive guide to the underlying technologies that make up virtual networks, as well as some thought-provoking critique of the real value of SDN, where some technologies might be redundant, and where some vendors may be going astray. I think that's where many blogs are coming up short - we're all so busy getting on board the hype train that we forget to notice that, yes, some people are doing things wrong in this space! The value doesn't come from installing SDN, it comes from making real business gains!
I was particularly interested to note that you had some reservations about how the Open Networking Foundation is doing things. I'm generally a big fan of open movements, and I've been very happy to see them take off in modern areas like SDN. I do see your point about putting all your eggs in one basket could be a problem (or at least, miss the point of benefit), but on the other hand I tend to think that's how most enterprises will do business anyway. Vendor lock-in or no, most enterprises are inclined to stick with what they know - if they have existing Cisco certs and licenses, they'll go all Cisco, etc. They know it will all be compatible, they know they like the support (unless they don't), and they know (think) they'll get a good deal. You could say the same might end up true for virtual networks, and while they certainly do have a dog in the fight, one could see how that's the future ONF is anticipating.