Layer 2 over geographically disperse networks.

The situation that I am in is this:
I need to setup a DR site with a type of "flip the switch solution".  I have the solution drawn up but what I need to figure out is if I can run the same subnet at the COLO or not.  I realize this may be a really stupid question but just wanted to see if there is anyone with some insight into this.  The WAN that this will be going across is running BGP with VRF-lite.  I know this is not a lot of detail and can provide more if needed just want to see what kind of options I may have.
Thanks

Hello, for DR, in an "Active / Standby" solution you could extend layer 2 between sites, but all depends on which type of devices you have, which technology you could get comfortable with. I could suggest L2TPv3, (example here: http://www.networkworld.com/article/2343443/cisco-subnet/configuring-an-l2tpv3-ethernet-pseudowire.html) which is quite quick and easy to deploy. Just be mindful, of the default gateways of servers and hosts, where they would be, they'd have to be active in one place or the other depending on where hosts are based, you don't want them unnecessarily traversing a link to get to the default gateway. If switching on (albeit via shut/no shut/hsrp priority etc...) the SVI's or gateways in the DR site is part of the "flip the switch" it seems to work in my mind.

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