Due to a number of questions related to my previous post -- here are my observations regarding what is on the CCIE SP lab exam blue print but not covered by the Interwork Expert practice labs. Please note that this is just a comparison of what is on the blue print vs. what is on the practice labs - this is not an indicator of what you will see on the lab - I just believe that to be prepared for the lab, you need to cover the entire blue print:
1) Spanning Tree
2) IS-IS (while on many of the practice labs, I would consider most of the scenarios rather basic IS-IS. I believe it simply needs to be covered in more depth. This could just be my own weakness though, since I was never exposed to IS-IS until I started studying for the SP lab)
3) MP-BGP for multicast
4) mGRE
5) AToM and L2TPv3
6) QinQ
Some of these topics you can pick up in the R&S practice labs. It's also probably worth mentioning that while there are other features on the blue print that are not covered in the practice labs, I do not believe the current hardware and IOS versions in the lab make these very feasible to test (no guarantees of course).
Also, there are tons of IOS services that you could be tested on. Lots of these can be found in R&S practice labs as well but at the end of the day, you just can't cover them all -- best to know the Doc CD so you can look it up quickly.
Best of luck to all of you and many thanks to others that have posted on this board.