On the Premature Death of Spanning Tree and the Indiscriminate Killing of Canaries

I have a bee in my bonnet. After my last post full of love and bromance, this one is full of hate and vitriol - and I don’t apologise! We have all seen many presentations on each vendors latest and greatest “fabric” technologies over the past 18 months. It doesn’t matter which vendor, whether the presenter is sales or tech, or even enterprise or service provider focused - at some point almost every one declares that their solution is “the end of spanning tree”. It gets worse when they actively advise that you do not run spanning tree in your environment.