UDP Packets dropping from host to VM

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My setup:


Workstation Pro 15.5



CPUs: 16 cores, 32 threads

RAM: 128 GB

OS: Cent OS 7.6.1810

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



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?

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