Traffic received from CCEP Host A on Leaf 1 is flooded to Host 1 over Ethernet 0/3 (Layer 2 flooding), and to Leaf 2 over the VXLAN tunnel with Client 10. Traffic is forwarded to Host B over Po20.
Then Leaf 2 floods the packet to Host 2 over Ethernet 0/3, and but traffic to Host A and Host B over Po10 and Po20 is supressed.