[VMC on AWS] vROPS shows high packet loss alert for multiple ESXi Hosts

Products

• VMware Aria Suite
• VMware Cloud on AWS

Issue/Introduction

This article provides the remediation steps when the VMKernel NIC high number of packet drops alert is seen in vROPS when there are no alerts in vCenter

Symptoms:

• You may receive multiple vROPS alert -: “VMKernel NIC is experiencing high number of dropped packets

• No alerts are seen in vCenter.

Cause

This is caused due to stale ESXi host entry post removal of the host resulting in vSphere HA to send ARP requests to the ESXi that does not exist. This increases the "Network Outbound Packet Discard Rate on vmk" and is picked up by vROPS.

Resolution

In order to resolve this issue please unconfigure and re-configure vSphere HA for the affected cluster. This will help vSphere HA to resync with the actual hosts participating in the HA cluster and remove the stale host entry. 

Please engage VMware Support for assistance.

Workaround:
None

Additional Information

Impact/Risks:
This alert will be visible in vROPs until the resolution provided below is completed.