What are you referring to when you use active vs passive? RSD is relatively passive in nature as it listens for broadcasts and links to ePO. It has features to identify the os/platform by doing port/banner scans. Fort the second part, it needs to send packets.
If you have central DHCP, that is a great place to set it up
I am more concerned with the discrepancy of the document saying installation will fail if winpcap is installed and then saying that "the sensor uses winpcap, a packet capture library". I am curious about winpcap specifically and its interaction with RSD, not implementing RSD on a DHCP server or how RSD works. The document can be found at (see page 7 and 20): https://kc.mcafee.com/resources/sites/MCAFEE/content/live/PRODUCT_DOCUMENTATION/ 25000/PD25728/en_US/rsd_501_pg_en-us.pdf