MSDTC - how many ports are needed

Question

I have a considerably large application that uses MSDTC. How many ports should I open? Is there any way to determine it?

EDIT: I know what

Answer 1

I think Migol wants to know how big the range of the RPC dynamic port allocation should be.

In the KB they mention a minimum of 100 ports

Furthermore, previous experience shows that a minimum of 100 ports should be opened, because several system services rely on these RPC ports to communicate with each other.

So I would design a benchmark application to test different values of your dynamic range.