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Dell EMC OpenManage Essentials Version 2.5 User's Guide

Troubleshooting Device Discovery

If a device discovery is not successful, perform the following steps to troubleshoot and fix the problem:
  1. If the device assigned for discovery is a PowerEdge system, ensure that OpenManage Server Administrator is installed on it.
  2. To discover Windows devices successfully, configure the SNMP services appropriately. For detailed information on configuring SNMP services on Windows, see Configuring SNMP Services on Windows .
  3. To discover Linux devices successfully, configure the SNMP services appropriately. For detailed information on configuring SNMP services on Linux, see Configuring SNMP Services on Linux .
  4. After configuring the SNMP services, verify whether the SNMP services are responding correctly.
  5. If the device assigned for discovery is Microsoft Windows and you want to use WMI, ensure that the user name and password used in the WMI credentials has the local administrator permissions on the machine that you want to discover. You can use the Microsoft wbemtest utility to ensure that WMI connectivity to the Windows Server is correct.
  6. If the device assigned for discovery is a non-server network device, such as a printer, Networking Ethernet switch, and so on, ensure that SNMP is enabled on the device. You can do this by accessing the Web interface for a device.
  7. If there are changes in the IP address or FQDN for the target devices, in a DNS environment, then OpenManage Essentials will not display the correct IP Address and device names (FQDN) on the console. You must wait for the Operating System to update the DNS cache on the console, or run ipconfig /flushdns to flush the DNS cache, and then re-run the discovery and inventory tasks on the affected discovery ranges.

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