ACI MicroSegmentation

Application Profile --> EPG --> Intra EGP Isolation --> It's Unenforced (default) --> Change it to enforced and EndPoint within EGP will stop communication.

Now you may want to apply EndPoint Isolation on particular EGP then need to use Specific Domain

Go to Access Policies --> Domain

And allow Micro Segmentation

Now create uSeg EGP under application profile

Create uSeg Attributes

We need to define the rule for our USeg, in this particular case we are going to be using name as the VM attribute.