PC1 and PC2 have different subnet masks according to the figure, but this does not necessarily cause a communication failure. Subnet masks can affect routing and reachability, but they are not the determining factor in VxLAN configurations. However, PC1 and PC2 are associated with different VNIs (VNI1000 and VNI2000), which typically means they are part of different virtual networks. As a result, without additional configurations such as a router or L3 gateway, they will not be able to communicate with each other even though they are in the same Broadcast Domain (BD20).