SNMP traps for ESX Transport Nodes are not being sent
Article ID: 434935
Updated On:
Products
Issue/Introduction
Alarms such as "Enhanced Dp Flow Table Usage Very High" or other Transport Node Health events are generated within the NSX Manager UI, but corresponding SNMP traps are not received by external monitoring tools.
Other NSX Edge and Manager based traps (e.g., IDPS signature bundle failures) are received successfully, while host-specific alerts are missing.
Environment
VMware NSX
Cause
In VMware NSX, alarms related to Transport Node (ESXi) health are sent directly from the management IP of the ESXi host, rather than from the NSX Manager appliance. If the SNMP service is not configured and enabled on the underlying ESXi host, these traps will not be forwarded to the monitoring destination.
Resolution
This is expected behaviour and requires the SNMP agent to be configured on every ESXi host acting as an NSX Transport Node.
Follow the documentation for configuring ESXi for SNMP: Configure ESXi for SNMPv1 and SNMPv2c
Additional Information
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