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No cluster switch is detected and the switchless option is not enabled

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ontap-9
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Applies to

ONTAP 9

The output of "system health alert show" shows the following alert: No cluster switch is detected and the switchless option is not enabled.

Example:

netapp::*> system health alert show
               Node: netapp-05
           Resource: netapp
           Severity: Major
    Indication Time: Thu Jan 13 10:14:04 2022
           Suppress: false
        Acknowledge: true
     Probable Cause: No cluster switch is detected and the switchless
                     option is not enabled.
    Possible Effect: Communication problems and cluster connectivity issues
                     occur.
 Corrective Actions: 1) If the cluster network is configured as a two-node switchless cluster (TNSC),
                     enable switchless detection by using the "network options detect-switchless-cluster modify -enabled true" command.
                     No further action is required.
                     2) If the cluster network is configured with cluster switches, the nodes fail to detect the switches.
                     Ensure that the network interfaces on the cluster switches connected to the node cluster ports are enabled on both sides.
                     If the errors are corrected, stop. No further action is required. Otherwise, continue to step 3.
                     3) Check the physical connections between the nodes and the cluster switches. Replace network cables with known-good cables.
                     If the errors are corrected, stop. No further action is required. Otherwise, continue to step 4.
                     4) Ensure that either CDP (for Cisco switches) or ISDP
                     (for NetApp CN1610 and Broadcom BES-53248 switches) is
                     enabled on the cluster switches.

 

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