A few of my co-workers are, for lack of a better term, 'complaining' that there are no "formal" training/certifications on the mid-range platforms such as AS400, RS6000, HP3000/9000, AIX, IBM Mainframe etc. While Microsoft has the MCSA/E track, Cisco has the CCNA/P track; whats the equivalent on the platforms mentioned above, if any?
This is really more for my curiosity than anything. Also to expand my useless knowledge

Oh, and I will go ahead and put
JUST F'ING GOOGLE IT here so nobody else has to. I would have done so, but I wanted feedback from my TE colleagues.