Data Center Failover

Thanks for your reply Cory and that will definitely take care of the wan portion however I think the main issues are regarding what happens from a firewall/F5 perspective. Once you go advertising a prefix out of another location there are routing/NAT considerations. Eg I advertise dc1 prefix out of DC2. dc1 servers have default routing via dc1 firewalls, VIP on local LTM and exit to the internet via DC1 links/static routing. In the case of say DC1 links being down what are the best options for getting the traffic in and out DC2. I will need src / dest nat's , make sure prefixes are advertised across inter DC links or a combination of both maybe. I was also considering the option of a wan backbone , connecting the internet edge routers to the core switches and running some kink of traffic seperation ( vrf's etc. ) that way traffic would stay on the same stateful devices , if DC1 links were down it would route as normal through firewalls but exit at DC2.