Bob,  thanks for your response.  It looks like the Appliance can be given a range of IP addresses to sweep and search for PP license instances, FYI.  In any case, we can query the storage arrays to divulge their connected hosts, and then search those hosts for PP via the Appliance.  Thanks for the info.
I am a partner pre-sales SE, trying to help one of our larger clients inventory all of their PowerPath licensing for EMC maintenance purposes.  Some licenses have been installed in a licensing server, so those are easy.  But, so many of the others have been installed on individual servers that may or may not still be in use.  Is there a good methodology for identifying all PP licensing throughout an enterprise?  Is there a way, from the storage arrays' perspective, which hosts have PP installed (and which do not)?  Thanks in advance, Eric
How to do an Enterprise PowerPath Inventory