When a SEPM fails and is down, can a GUP still function as a distribution point to its local clients?  From a document I read today, the process by which the communication between a GUP and a SEPM happens, the client initiates communication directly with the SEPM, which provides any policy changes, and provides the client with the info that an update is required and THEN the client communicates with the GUP. 

If the SEPM fails, is the client going to go to the GUP and be able to retrieve updates??