NSX UI does not display statistics for dFW rules hit count and N_VDS physical NIC statistics.

Products

• VMware NSX

Issue/Introduction

Symptoms:

• NSX-T version 2.5.x, 3.0.x 
• NSX-T Manager UI is unable to display N-VDS physical NIC statistics.
• NSX-T Manager UI is unable to display dFW rules hit count statistics. 
• API Call api/v1/transport-nodes/<TN-ID>/network/interfaces/<interfaceID>/stats returns an empty output. 
• A remote console interface exists on the affected ESXi hosts as for example "vusb0"

In the NSX-T syslog.log and nsxapi.log you can see: 

2020-05-11T15:38:14.306Z WARN cvn-hv:HostNodeStatusVertical-0 GSROverwritePullResponseHandler - - [nsx@6876 comp="nsx-manager" level="WARN" subcomp="manager"] Failed to process overwrite stats: app=HostNodeStatusVertical, clientType=cvn-hv, clientToken=66b7c13c-8be0-###-####-########253, error=java.lang.Exception: target type must not be null.d

In the ESXi host logs nsx-syslog.log: 

2021-06-16T04:09:54Z nsx-exporter: NSX 2129105 - [nsx@6876 comp="nsx-esx" subcomp="agg-service" tid="2129548" level="INFO"] [EsxHostNodeStatusVertical][GetHostNodeInterfaceStatistics] Collecting all overwrite interface statistics
2021-06-16T04:09:54Z nsx-exporter: NSX 2129105 - [nsx@6876 comp="nsx-esx" subcomp="agg-service" tid="2129548" level="INFO"] [AddTargetError]: Adding target error [-5002] for [::node_interface:vusb0]
2021-06-16T04:09:54Z nsx-exporter: NSX 2129105 - [nsx@6876 comp="nsx-esx" subcomp="agg-service" tid="2129548" level="ERROR" errorCode="MPA12003"] [EsxHostNodeStatusVertical][SetInterfaceStatistics] Unable to set stats for intf: vusb0

Note: The preceding log excerpts are only examples. Date, time, and environmental variables may vary depending on your environment

Environment

VMware NSX-T

Cause

This issue occurs due to a software defect in NSX-T

Resolution

This issue is resolved in NSX-T 3.1.0 available at Support Documents and Downloads.