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Update your network for ONTAP NFS trunking

Contributors netapp-ahibbard netapp-forry netapp-bhouser netapp-aoife netapp-mdavidson netapp-aherbin netapp-aaron-holt
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To take advantage of NFSv4.1 trunking, the LIFs in a trunking group must reside on the same node and have home ports on the same node. The LIFs should be configured in a failover group on the same node.

About this task

A one-to-one mapping of LIFs and NICs yields the greatest performance gain but is not required to enable trunking. Having at least two NICs installed can offer a performance benefit, but it is not required.

All LIFs in the trunking group should belong to the same failover group. Note that when the LIFs are configured in a failover group on the same node, a controller failover on that node can cause the LIFs to go offline. If the LIFs are not configured in a failover group on the same node and failover to another node, then trunking will no longer function.

You should adjust the trunking failover group any time you add or remove connections (and underlying NICs) from a failover group.

Before you begin

  • You must know the port names associated with the NICs to create a failover group.

  • The ports must all be on the same node.

Steps

  1. Verify the names and status of the network ports you plan to use:

    network port show

  2. Create a trunking failover group or modify an existing one for trunking:

    network interface failover-groups create -vserver <svm_name> -failover-group <failover_group_name> -targets <ports_list>

    network interface failover-groups modify -vserver <svm_name> -failover-group <failover_group_name> -targets <ports_list>

    Note It is not a requirement to have a failover group, but it is strongly recommended.

    • <svm_name> is the name of the SVM containing the NFS server.

    • <ports_list> is the list of ports that will be added to the failover group.

      Ports are added in the format <node_name>:<port_number>, for example, node1:e0c.

      The following command creates failover group fg3 for SVM vs1 and adds three ports:

      network interface failover-groups create -vserver vs1 -failover-group fg3 -targets cluster1-01:e0c,cluster1-01:e0d,cluster1-01:e0e

      Learn more about failover groups.

  3. Create additional LIFs for members of the trunking group as needed:

    network interface create -vserver <svm_name> -lif <lif_name> -home-node <node_name> -home-port <port_name> -address <IP_address> -netmask <IP_address> [-service-policy <policy>] [-auto-revert <true|false>]

    • -home-node - the node to which the LIF returns when the network interface revert command is run on the LIF.

      You can specify whether the LIF should automatically revert to the home-node and home-port with the -auto-revert option.

    • -home-port is the physical or logical port to which the LIF returns when the network interface revert command is run on the LIF.

    • You can specify an IP address with the -address and -netmask options.

    • When you assign IP addresses manually (without using a subnet), you might need to configure a default route to a gateway if there are clients or domain controllers on a different IP subnet. The network route create command page contains information about creating a static route within an SVM. Learn more about network route create in the ONTAP command reference.

    • -service-policy - the service policy for the LIF. If no policy is specified, a default policy will be assigned automatically. Use the network interface service-policy show command to review available service policies.

    • -auto-revert - specify whether a data LIF is automatically reverted to its home node under circumstances such as startup, changes to the status of the management database, or when the network connection is made. The default setting is false, but you can set it to true depending on network management policies in your environment.

      Repeat this step for each additional LIF needed in the trunking group.

      The following command creates lif-A for the SVM vs1, on port e0c of the node cluster1_01:

      network interface create -vserver vs1 -lif lif-A -service-policy default-intercluster -home-node cluster1_01 -home-port e0c -address 192.0.2.0

      Learn more about LIF creation.

  4. Verify that the LIFs were created:

    network interface show
    Cli
    Copy

  5. Verify that the configured IP address is reachable:

    To verify an…​ Use…​

    IPv4 address

    network ping

    IPv6 address

    network ping6

Learn more about network interface in the ONTAP command reference.