ACI, 2 BD´s and 2 EPGs in L2 mode won´t talk even with contract supplied

Hi experts
I tried to make a L2 connection between 2 EPG in different BD, both BD are in L2 mode and in the same Private network, I saw in the sniffer that the traffic was send between the EPG ( hosts)  but the "ping" between the hosts did not got answered. we had a contract between the EPG´s that was allow any in both directions.
the connection works between the 2 host  with the 2 EPG´s in the same BD with the same any contract.
is it intended that 2 BDS won´t let 2 EPG´s talk in L2 mode ( Floodmode ) ?.
And I read that the L2 external is not a separate BD but 2 EPG´s in a " L2 construct"  with a contract between and the AEP stuff to get physical to work
/Ola

Just to understand, you created two BDs in flood and L2 mode and two EPGs. The two hosts are using the same subnet/address space to talk to each other and you have a contract in between the two EPGs yet the communication is not working.
When you put the two EPGs in the same BD it works? correct?
Its a very interesting question, but there is something you must remember about ACI. The BD is the flood/forwarding boundary. Since you are using two different flood domains and no routing (unicast off and no subnet/SVI on the BD), ARPs and general data flood/packets will not traverse the flood domains, even with a contract.
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ACI, 2 BD´s and 2 EPGs in L2 mode won´t talk even with contract supplied

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