User`s guide

Chapter II. NDIS Function
Chelsio T5/T4 Unified Wire for Windows 29
2.3. Enabling SMB Direct
SMB Direct is installed and enabled by default on Windows Server 2012 R2 systems. RDMA
functionality on Chelsio adapters will be enabled after installing the driver from the package.
You can use the following PowerShell command Get-NetAdapterRdma to get a list of RDMA
capable interfaces in your system.
The next step is to configure your network so that SMB server and client machines can
communicate with each other. Disable firewall for Chelsio adapters when using SMB.
2.4. Verifying RDMA
There are number of ways to verify if RDMA is working:
2.4.1. Verify active connections using PowerShell
Open PowerShell window and execute the command Get-SmbConnection
2.4.2. Use Event Viewer
You can use Event Viewer to view SMB connection events. To do this:
i. Open Event Viewer
ii. In the console tree, expand Event Viewer.
iii. Navigate to Application and Service Logs-> Microsoft->Windows->SMBClient
->Operational
2.5. Troubleshooting
If RDMA is not working in your system, please check for the following:
 Operating system version should be Windows Server 2012 R2.
 Verify network interface configurations on both sides.
 Please ensure that the interfaces are reachable using ping command.
 In the Event Viewer (on the client side), please ensure that the traffic running is not over
TCP.
At least one adapter should indicate “RDMA Capable” true to take advantage of
SMB RDMA capability.
Note