Dell Open Manage Print Manager Software - Manual (Page 135)

Discovery 135
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Discovery
OpenManage Printer Manager (OMPM) discovers all network printers that comply with RFC3805,
1213, 2790 and 3410 standards.
Discovery is the process of identifying printers on the network. The Discovery feature allows you to
discover printers immediately or within a defined schedule.
OMPM identifies the printers on an IPv4 Local Area Network (LAN) based on their IP addresses, and
adds the printers to a list of managed printers.
Any printers on the blocked list are excluded from discovery.