Network Configuration

Hello all,
I am looking forward to suggestions on how to setup Yeti (Admin & CDR) on a single server (Public IP) with Multiple Nodes (each of them on different IP). what should be the elements in my sems.conf ?

with current scenario i tried to configure sems.conf with external signaling IP and SEMS node as RTP (nodeIP), sems failing to read/accept external ip.
Please suggest.

Could you provide your configuration and error message?