There are resources after resources on how to prepare for the CCIE. And I'm sure it takes a combination of many different types of these resources to pass. However, it has a high percentage first time failure rate, yet there are thousands of CCIEs, several of which didnt past the first time. So, obviously there was a lack of something the first time. Now, obviously Im not looking for any info that would violate any CCIE's non-disclosure. Yet, just in general is there anything thats been common among most that fail the first time. In other words, was it just a matter of more study time needed? more lab study time? more book/white paper/conceptual study time, more real world experience, more testing environment practice, or more all the above...Obviously, the answers are probably going to vary based on inviduals but I was wondering if there was some common denominator where maybe people just push themselves to take it too early. Or they spend too much time focused on labs, and not enough time learning whats happening in the background.
I know with the CCNP (which I know is like comparing apples to oranges with the CCIE lab but currently is my only base of comparison at this point), there were subjects that I could have studied books for years and years and wouldnt have known some of the answers. Im not saying the books were lacking, but there isnt any way books can show/explain to you every scenario and thats where experience and practice labs came in.
Any answers from recent CCIEs or older CCIEs would greatly help.
Thanks up front for any help.