Core file from NSX T may be needed during troubleshooting issues. This KB shows the method to generate core files on an Edge node.
Scaled up environments (logical-routers) may experience issues with dataplane traffic. Retrieval and examination of a core file may help with the troubleshooting.
a. Identify the PID of the datapathd process:
#ps -ef | grep -i datapathd
b. Run following command
#/opt/vmware/nsx-edge/sbin/gdb --pid=$processID
(gdb) generate-core-file
c. core file will be generated in the directory from where the command was executed
You can upload this core file to a case for offline review with Broadcom support. See the below links: