# Set the bandwidth reservation mode for Live Migration to Absolute
Set-VMHostNetworkAdapter -VMHost $VMHost -Name "vEthernet (External)" -BandwidthReservationMode Absolute

# Set the absolute minimum bandwidth for Live Migration to 1 Gbps
Set-VMHostNetworkAdapter -VMHost $VMHost -Name "vEthernet (External)" -DefaultFlowMinimumBandwidthAbsolute 1000000000

Set the bandwidth percentage reserved for Live Migration (e.g., 10%)
Set-VMHostNetworkAdapter -VMHost $VMHost -Name "vEthernet (External)" -BandwidthPercentage 10

This configuration ensures that Live Migration will always have at least 1 Gbps of bandwidth, with up to 10% of the total network bandwidth reserved for migration operations. The rest of the bandwidth will be available for other VM and cluster traffic.

Conclusion

• Use Absolute for Live Migration to guarantee bandwidth.
• Set the DefaultFlowMinimumBandwidthAbsolute to a value that ensures adequate performance for Live Migration (e.g., 1 Gbps).
• Use BandwidthPercentage or Weight to manage relative bandwidth for other network flows in your Hyper-V environment.
• Test the configuration in a staging environment and monitor the performance of Live Migration to adjust the settings if necessary.