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Check the ONTAP FC adapter port speed

Contributors netapp-barbe netapp-dbagwell netapp-aaron-holt netapp-aherbin
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The adapter target port speed should match the speed of the device to which it connects, to optimize performance. If the port is set to autonegotiation, it can take longer to reconnect after a takeover and giveback or other interruption.

Before you begin

All LIFs that use this adapter as their home port must be offline.

Steps

  1. Take the adapter offline:

    network fcp adapter modify -node nodename -adapter adapter -state down

    Learn more about network fcp adapter modify in the ONTAP command reference.

  2. Check the maximum speed of the port adapter:

    fcp adapter show -instance

    Learn more about fcp adapter show in the ONTAP command reference.

  3. Change the port speed, if necessary:

    network fcp adapter modify -node nodename -adapter adapter -speed {1|2|4|8|10|16|auto}

  4. Bring the adapter online:

    network fcp adapter modify -node nodename -adapter adapter -state up

  5. Bring all the LIFs on the adapter online:

    network interface modify -vserver * -lif * { -home-node node1 -home-port e0c } -status-admin up

    Learn more about network interface modify in the ONTAP command reference.

Example

The following example changes the port speed of adapter 0d on node1 to 2 Gbps:

cluster1::> network fcp adapter modify -node node1 -adapter 0d -speed 2