Does anyone know this nlm ?

it is a tool that checks the public lan when heartbeat-lan is separated
from public lan and abends the failing node when it looses connect to the
public lan. it´s from novell consulting (Robert Kumiega)
i want to migrate a 3-node-cluster to oes. migrated one node and detected
that this nlm is not working under oes - it cant send or receive any packet.
does anybode knows why or can me tell a similar toosl that runs under
oes-netware ?