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Configure LIFs for NFS over RDMA

Contributors netapp-ahibbard netapp-aherbin netapp-dbagwell netapp-thomi
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To use NFS over RDMA, you must configure your LIFs (network interface) to be RDMA compatible. Both the LIF and its failover pair must be capable of supporting RDMA.

Create a new LIF

System Manager

You must be running ONTAP 9.12.1 or later to create a network interface for NFS over RDMA with System Manager.

Steps

  1. Select Network > Overview > Network Interfaces.

  2. Select Add icon.

  3. When you select NFS,SMB/CIFS,S3, you have the option to Use RoCE ports. Select the checkbox for Use RoCE ports.

  4. Select the storage VM and home node. Assign a Name, IP address, and Subnet mask.

  5. Once you enter the IP address and subnet mask, System Manager filters the list of broadcast domains to those that have RoCE capable ports. Select a broadcast domain. You can optionally add a gateway.

  6. Select Save.

Modify a LIF

System Manager

You must be running ONTAP 9.12.1 or later to create a network interface for NFS over RDMA with System Manager.

Steps

  1. Select Network > Overview > Network Interfaces.

  2. Select Menu options icon > Edit beside the network interface you want to change.

  3. Check Use RoCE Ports to enable NFS over RDMA or uncheck the box to disable it. If the network interface is on a RoCE capable port, you will see a checkbox next to Use RoCE ports.

  4. Modify the other settings as needed.

  5. Select Save to confirm your changes.

Migrate a LIF

ONTAP also allows you to migrate network interfaces (LIFs) to use NFS over RDMA. When performing this migration, you must ensure the destination port is RoCE capable. Beginning with ONTAP 9.12.1, you can complete this procedure in System Manager. When selecting a destination port for the network interface, System Manager will designate whether ports are RoCE capable.

You can only migrate a LIF to an NFS over RDMA configuration if:

  • It is an NFS RDMA network interface (LIF) hosted on a RoCE capable port.

  • It is an NFS TCP network interface (LIF) hosted on a RoCE capable port.

  • It is an NFS TCP network interface (LIF) hosted on a non-RoCE capable port.

For more information about migrating a network interface, refer to Migrate a LIF.

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