The IP Manager probes the topology and IP address table MIBs of the seed systems to find IPv4 addresses of additional systems. Those IP addresses become candidate systems for the autodiscovery process.
The autodiscovery process can use three different data sources of information to discover candidate systems:
IP address table MIB
ARP table MIB
The data sources are described in “Autodiscovery data sources” on page 165. By default, discovery uses the topology and IP address table MIBs of the discovered systems (initially, of the discovered seed systems) because these MIBs are very reliable sources for topology information.