ESX 9.1 vmnic traffic much higher than true

./validate.php

Component Version
LibreNMS 26.7.0-dev.31+132a6f289 (2026-06-22T07:35:24-07:00)
DB Schema 2026_06_09_000000_change_vsz_to_big_int_processes_table (390)
PHP 8.3.31
Python 3.9.25
Database MariaDB 10.5.29-MariaDB
RRDTool 1.7.2
SNMP 5.9.1
===========================================
[OK] Composer Version: 2.10.1
[OK] Dependencies up-to-date.
[OK] Database Connected
[OK] Database Schema is current
[OK] SQL Server meets minimum requirements
[OK] lower_case_table_names is enabled
[OK] MySQL engine is optimal
[OK] Database and column collations are correct
[OK] Database schema correct
[OK] MySQL and PHP time match
[OK] Active pollers found
[OK] Dispatcher Service not detected
[OK] Locks are functional
[OK] Python poller wrapper is polling
[OK] Redis is functional
[OK] rrd_dir is writable
[OK] rrdtool version ok

Hello,

First thanks very much for maintaining this excellent project.

I recently added a few ESX 9.1 with snmp v2c.

In LibreNMS the graphed vmnic traffic is much higher than what the network switch reports and with esxtop n.
In LibreNMS 10G links show 11G+ average… which is impossible. True traffic is more like 40mbps.

If I do a manual snmpget/walk/bulkwalk the poll result does appear to match the switch and esxtop n.

I think this strangeness started when I deployed a vDS on the hosts.

Has anyone encountered this, if you have any ideas to resolve please let me know.

Many thanks

Can you show what you found via SNMP?

LibreNMS pretty much just accepts the raw values from the device. There are some exceptions to work around device bugs.