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In order to synchronize the virtual machines, the PTP clock of the host can be used (ptp_kvm). It is also possible to pass the PTP clock on the PCI-passthrough/SR-IOV interface given to the VM.
See the Time synchronization page for more details.
Example of configuration
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However, in a test environment, these two machines can be simulated:
See this page to simulate IEC 61-850 traffic
See this page to simulate a grand master clock
For this section example, we will use only one machine to simulate both PTP frames and IEC 61-850 traffic. This machine will be named “Publisher”.
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Note: To manage PTP, the best is to use a PTP-compliant switch. See more information on the Time synchronization page
Below is a schema of a cluster with two hypervisors and an observer. The administration network is isolated on his switch. Another switch is used for PTP and IEC 61-850 traffic. Remember that if you use PCI-passthrough, you will need as many interfaces as you have Virtual machines.
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