Do you have some VMs to test communication between VMs in the same logical switches, different logical switches, and VMs to Edge?
You may not be able to ping from DLR Control VM, this is expected as per this KB
VMware KB: Unable to ping the virtual machines connected to the DLR internal interface from the control VM of a VMware NSX for vSphere 6.x distributed logical router (DLR)
http://kb.vmware.com/kb/2127355
Bayu Wibowo | VCIX6-DCV/NV
Author of VMware NSX Cookbook http://bit.ly/NSXCookbook
https://github.com/bayupw/PowerNSX-Scripts
https://nz.linkedin.com/in/bayupw | twitter @bayupw