Promote an existing node to WMI monitoring in SAM
Windows Management Instrumentation (WMI) is a proprietary technology developed by Microsoft that the Orion Platform can leverage to poll performance and management information from Windows‑based network devices, applications, and components. When used as an alternative to SNMP, WMI can provide much of the same monitoring and management data currently available with SNMP‑based polling with the addition of Windows‑specific communications and security features.
Due to specific characteristics of WMI polling requests, polling a single WMI‑enabled object uses approximately five times the resources required to poll the same or similar object with SNMP on the same polling frequency.
WMI uses TCP Port 135 to initiate communication with the remotely managed host, and then switches to any random high port anywhere between TCP port 1024-65535. To learn more, see the Portocalypse - WMI Demystified product blog in THWACK. If a target computer has a Windows firewall enabled, add a Remote WMI exception to allow remote WMI traffic through.
Your devices must have WMI and ICMP enabled to use this polling method. You can use WBEMTest.exe, included on every system with has WMI installed, to test the connectivity between your Orion server and your Windows computer.
To promote an existing node to WMI monitoring:
- Navigate to Settings > Manage Nodes.
- Select the check box for the node, click Edit Properties, and then select Windows Servers: WMI and ICMP.
- Enter WMI credentials.
- Click Test to confirm your settings.
- To save changes, click Submit > OK.
For a comparison of which features are available for the Windows agent versus agentless, click here here.