hi, I am asked to build a large lab/test it. I'm provided crazy scale numbers for lots of technologies (L*VPN, IPv*, IGP*, All Tunnels flavors...etc). It took me a lot of time to build this lab, because when I got the request/test plan handed over to me, I did not verify that these scaled numbers are even possible, not to mention the combination. I assumed some thought/research were done before. I'm trying to put together a list of the lessons learned, and the right way to do this for future reference, specially that this project was time critical and I got beaten hard because I did not deliver on time. So my question is, in your extensive experience, what is the right method/approach to this kind of task: 1) Get started immediately (MVP), things will break, tune it along the way. 2) Do some planning and research first. I'd appreciate any references to 'software engineering' or other industries/ Thanks