IBM Tivoli Network Manager has two options in the DiscoConfig cfg file which seem to generate many questions and lead to a bit of confusion. The options are m_CheckFileFinderReturns and m_PingVerification. The knowledge center is always a great place to start.
Options explained in DiscoConfig file
Let's start with PingVerification
from the knowledge center-
Option to check whether an interface is able to be pinged. If the device is not pingable, then Network Manager... [More]