ASR and OTV implementation/documentation

i am testing the implementation of otv using the asr's not the 7k's, the code just came out to support it. The config is different on the asr compared to the 7k's and i can not find any doc's worth while on the asr's, i have read the white papers which all refer to the 7k's but need some good doc's on the asr implementation. we are looking at using this to do the dr from one dc to the other, get away from sunguard etc......   the dc's are long distance, like US to Europe, can this operate in this environment, we are a global corp and i do have other dc's here in the US but would rather do it between our 2 biggest dc's, if there is a distance limitation please specify, i have dedicated oc3's between.  also i have read all the issues that others seem to be having with multi-cast or unicast over the wan, we are running on our own mpls wan which is not multicast currently, i have read about the aed function with the 7k's and assume this is the way to implement with asr's.....   one good drawing with correct config's would be greatly appreciated, have searched ccie sites on web, your site, etc.....    can't find anything really even worth reading, i assume i'm missing them somewhere......
thanks in advance for any help,
jim

James, here's the current config guide for the OTV feature on the ASR1000 for IOS XE 3.5S
http://www.cisco.com/en/US/docs/ios-xml/ios/wan_otv/configuration/xe-3s/wan-otv-confg.html
To run OTV on the ASR1000 today, you need a multicast enabled WAN for OTV Edge Devices to discover neighbors.   The alternative method of deploying on a non-multicast enabled WAN is known as Adjacency Server, and this is not supported in this initial release.
Regarding the question about distance limitations, OTV doesn't have such a limitation.   However, considerations for application/protocol performance over such long distances need to be taken (one way and round trip latency).
I hope this helps,
Ryan

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