I would start with the Product Guide.  [URL]  Basically the SIB connection, of which there are 2 per Director, will each connect to their corresponding port in their corresponding MIBE ( 1 goes to MIBE A and 1 goes to MIBE B ). More detailed diagrams, and explanations can be found in the Product guide.
Hello All,  Does anyone know how exactly MIBE, SIB and director are logically interconnected? Is there ant document available? I appreciate answers/suggestions.  Thank you Sanjit Kumar Achary
MIBE concept in VMAX SE