If your HPE iLO 5 SNMP service suddenly stops responding — even though the settings are correct — you’re not alone.
The Problem:
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SNMP community string configured correctly
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Port 161 open and reachable
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iLO web interface shows SNMP as enabled
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But SNMP queries return no data
The Cause:
A known issue in some iLO 5 firmware versions can cause the SNMP service to hang silently, especially after long uptime or certain configuration changes.
The Solution:
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Log in to the iLO web interface.
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Go to Information → Diagnostics → Reset iLO.
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Confirm the reset (this does not reboot the server, only the iLO controller).
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Test SNMP again — it should now respond normally.
Pro Tip:
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Update to the latest iLO 5 firmware to avoid recurring issues.
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If SNMP fails again in the future, a quick iLO reset is often all you need.
Sometimes the fastest fix is the simplest — reset iLO, and your SNMP is back in seconds.
