How to validate RoCE v2 PFC settings with PowerShell?

Question

How to validate RoCE v2 PFC settings with PowerShell?

Answer 1

Use PowerShell to verify that the RoCE traffic priority is mapped to a lossless class and that PFC is enabled on the switches and NICs:

Get-NetQosPolicy

Get-NetQosTrafficClass

Get-NetQosFlowControl

You should see the RoCE priority (commonly 3) mapped to a traffic class and PFC enabled for that priority.

Validate the RDMA adapters are active:

Get-NetAdapterRdma

Get-SmbClientNetworkInterface

Then generate RDMA traffic and monitor for pauses or drops:

Get-NetAdapterStatistics

Get-Counter "\RDMA Activity()"

If the RDMA adapter is enabled, the QoS priority matches the traffic class, and PFC is enabled on the same priority end-to-end (host and switch), your RoCE v2 PFC configuration is generally considered valid. For deeper validation, compare pause-frame counters on both the NIC and switch ports during sustained RDMA traffic.