ECDSA is not supported.
Article ID: 185716
DX Unified Infrastructure Management (Nimsoft / UIM)
rsp 5.35 or less probe will fail to connect to monitored host via SSH if the monitored host accepts only ECDSA key.
Release : 5.35 or less
Component : rsp probe
rsp 5.35 or less probe does not support ECDSA key. Accepting RSA/DSA keys is required for the rsp probe.