Hello,
You may have more networks than the 3 you mentioned that need to be considered:
* Management
* vMotion
* Fault Tolerance (not available for free)
* Storage
* Production VMs
In this case I would not comingle any of these networks as they each represent different security trust zones. But if you had to, and are using VLANs, then Mgmt and Storage, vMotion and FT, and Production as its own. If not using VLANs then you should use different pNICS and pSwitches per each network.
Best regards,
Edward L. Haletky
VMware Communities User Moderator, VMware vExpert 2009, 2010, 2011,2012,2013,2014
Author of the books 'VMWare ESX and ESXi in the Enterprise: Planning Deployment Virtualization Servers', Copyright 2011 Pearson Education. 'VMware vSphere and Virtual Infrastructure Security: Securing the Virtual Environment', Copyright 2009 Pearson Education.
Virtualization and Cloud Security Analyst: The Virtualization Practice, LLC -- vSphere Upgrade Saga -- Virtualization Security Round Table Podcast