April 4 2018 I did my 4th attempt of the CCIE R&S Lab in Brussels. This time I passed! Now I know how to approach the lab and through my failed attempts I learned what works for me in terms of strategy. I will go through it here: First of all you need to master all topics in the blueprint. This goes without saying. Not only do you need to know the technologies inside out, but you must also master how to troubleshoot, diagnose, and configure them – fast!