My setup:

Workstation Pro 15.5

Host

CPUs: 16 cores, 32 threads

RAM: 128 GB

OS: Cent OS 7.6.1810

5 NICs – 2×40 Gbps, 2x10Gbps, 1x10Gbps

VM

CPUs: 16 threads

RAM: 64 GB

OS: Red Hat Enterprise 7.8

2 VNICs – 2×10 Gbps

I’m trying to transfer UDP packets from Host to VM using iperf command at 850 Mbps bandwidth. In the attached screen shots. I am dropping about 2-3% of my packets. I have MTU=9000 in all the ifcfg files for all the VNICs and NICs.

What configurations do I need to change to stop packet loss between Host and VM?