If you are interested with how to design and configure HP Networking Intelligent Resilient Framework (IRF) along with HP BladeSystem Virtual Connect, this is the white paper I created that may be helpful.
Some concepts like IRF conversion sample is independent of Virtual Connect. Also, the same Virtual Connect design and configuration rule can be used when VC is connected to Cisco vPC or VSS technology.
This is the pdf download link.
http://h20565.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c02843088