First thing I would check is the port configuration, what is the duplex and speed for the connection from and to controller.
- Check the network setup, gateway, L2/L3 setup on your network
- Check if master IP is defined on local, and local IP defined on master (or 0.0.0.0)
- Try remove the IPSec you mentioned and ping each other'
If you are able to ping from Master to Local then proceed to create IPSec tunnel.
Goodluck!