Discovery filter matching

A candidate system is subjected to two levels of filter matching:

• “First-level filter matching” on page 182

  Matching of IP address in the first core field of a filter, to determine whether the system is eligible for discovery.

• “Second-level filter matching” on page 182

  Matching of other criteria in the remaining four core fields of a filter after the candidate system passes ICMP and SNMP polling, to determine whether the system should be added to the modeled topology.