The installation of a new OTV network connecting two data centers via a service providerLAN has failed
verification steps. Which statement explains why certain types of data are not being successfully transferred
across the OTV network?
A.
The number of extended VLANs across all configured overlays may be greater than
256.
B.
The number of MAC addresses on either edge devicemay exceed 4000.
C.
The additional 42-byte OTV overhead, along with the DF bit being set, may cause the service providerto
drop packets based on their 1500 MTU settings.
D.
Having more than two edge devices per site is not supported.
Note: OTV adds a 42-byte header with the Do Not Fragment (DF)-bit to all encapsulated packets. In order to transport 1500-byte packets through the overlay, the transit network must support MTU of 1542 or higher. OTV does not support fragmentation. In order to allow for fragmentation accross OTV, you must enable otv fragmentation join-interface .
http://www.cisco.com/c/en/us/support/docs/routers/asr-1000-series-aggregation-services-routers/117158-configure-otv-00.html