UDP Packet loss between two Oracle VM Virtual Machines or between two PCA Compute Nodes Virtual Machines

(Doc ID 2100093.1)

Last updated on DECEMBER 07, 2017

Applies to:

Private Cloud Appliance - Version 1.0.1 to 2.2.1 [Release 1.0 to 2.0]
Oracle VM - Version 3.1.1 to 3.3.5 [Release OVM31 to OVM33]
Linux x86-64

Symptoms

UEK4 is unaffected by this issue - Do not follow this solution for UEK4-based Virtualization hosts

On Oracle VM, or On Oracle Private Cloud appliance, when running large load tests of UDP packets, e.g. using the iperf3 tool with UDP, there can be a large packet loss witnessed. Applications making intense usage of the UDP protocol may also exhibit this behavior.

e.g. when running iperf3 to replicate the issue, with a command in the lines of :

Cause

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