Dell EMC OpenManage Essentials Version 2.5 User's Guide

Discovery Configuration Options

Table 1. Discovery Configuration Options . The following table describes the fields displayed in the Discovery Configuration Options window.
Field Description

Save as Group

Select this option to save the discovery range as a group.

Group Name

Specifies the group name for the discovery range.

IP address / range

Specifies the IP address or IP address range.

The following are examples of valid discovery range type address specifications (* is the wildcard character, meaning all possible addresses in the specified range):
  • 193.109.112.*
  • 193.104.20-40.*
  • 192.168.*.*
  • 192.168.2-51.3-91
  • System IP address—
  • NOTE: Click Add to add multiple ranges of IP addresses. IPV6 addresses are not supported.

Discovery Range Name

Specifies the discovery range name for the IP address/range.

Host name

Specifies the host name, for example,

Click Add to add multiple host names.

  • NOTE: You can add multiple host names by separating them using commas.
  • NOTE: Invalid characters in the host name are not checked. If the host name you provide contains invalid characters, the name is accepted. However, the device is not found during the discovery cycle.

Subnet mask

Specifies the subnet mask for the IP address range. The subnet mask is used to determine the broadcast addresses for the subnet(s) part of the range. The OpenManage Essentials Network Monitoring Service does not use the broadcast address when discovering devices in an IP address range. The following are examples of valid subnet mask specifications:
  • (The default subnet mask for a Class C network.)
  • (The default subnet mask for a Class B network.)
  • (A custom subnet mask specification.)

By default, the subnet mask is set to


Select this option to import host names and IP addresses from a file that is in CSV format. However, you can import only 500 line items per task. You can import different discovery ranges with different subnet masks. For example,,,,, and,

You can use an Active Directory export file in a.CSV format as input. You can also create a .CSV file in a spreadsheet editor using the header Name and filling in system IP addresses or host names in the rows below the header (one per cell). Save the file in a .CSV format and use it as the input with the import feature. If there are any invalid entries in the file, a message is displayed when the data is imported by OpenManage Essentials. For an example of a CSV file, see Specifying IPs, Ranges, or Host Names .

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