I need to share a network/subnet between my main data center and my DR site for a high availability requirement with our DHCP/DNS infrastructure. The data center and the DR locations are currently in a different OSPF area though. I have a few questions regarding this.
1) Is it possible to advertise the same subnet in two different OSPF areas? if so, what are the implications of doing this?
2) If not, does anyone have any thoughts on how this can be accomplished without getting too messy. I'd prefer to avoid assymetric routing and also having to keep the DR site interfaces shutdown.
Any input is appreciated...