We use OTV on some Nexus 7ks to extend layer 2 between our main data center and one DR site. A few weeks ago, one of the 7k blades involved in the OTV VDC failed and caused the OTV overlay to completely flip out. Replacing and reconfiguring the hardware did not stabilize the problem, so we just shut down the OTV VDC on that switch to reach a stable condition.
A couple of weeks later, OTV bugged out again and caused a serious outage. A fantastic TAC engineer has looked this problem up and down thoroughly, but can't find a smoking gun. We're leaning towards this being a bug.
Long story short, because this issue has had high visibility in my company, we're likely moving away from OTV soon. We're basically deciding between VXLAN on our Nexus 9Ks (keep layer 2 extended across the two sites) or simple routing between the sites (no layer 2 extension).
For those of you who are running VXLAN at work, what have your experiences been like?
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