Multiple Sites - Multiple F5's - Multiple Exchange Servers

This is where we are facing some complexity. Our network team have proposed an interesting solution whereby everything is routed at the network level. So using OSPF. If you are a user in site A then you will get directed (based on your IP) to siteA F5 VIP. Same thing for SiteB. The primary issue is that the F5's at site A would have the same VIP as the F5's at Site B. They would never be aware of each other. I would need to set both CAS arrays to the same IP and I am not sure what this will do to exchange on the backend.

 

 

We aren't using GB