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CONTAP-248951: Cluster switch reports SwitchUnreachable_Alert/IP address not reachable after ONTAP upgrade

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Issue

  • After upgrading ONTAP, one or more nodes report that the cluster switches are unreachable:

[ClusterA::*> system switch ethernet show
Switch Type Address Model
--------------------------- ------------------ ---------------- ---------------
Switch-A1
cluster-network 1.2.3.4 OTHER
Serial Number: Unknown
Is Monitored: false
Reason: IP address not reachable
Software Version: Cumulus Linux version 5.4.0 running on Mellanox
Technologies Ltd. MSN2010
Version Source: LLDP
Switch-A2
cluster-network 1.2.3.5 MSN2100-CB2FC
Serial Number: Unknown
Is Monitored: false
Reason: IP address not reachable
Software Version: Cumulus Linux version 5.4.0 running on Mellanox
Technologies Ltd. MSN2010
Version Source: LLDP]
  • An alert is also observed in system health alert show output:

[Node: ClusterA-01
Alert ID: SwitchUnreachable_Alert
Resource: Switch-A1
Severity: Major
Indication Time: Fri May 03 09:39:17 2024
Suppress: false
Acknowledge: false
Probable Cause: The ethernet switch's IP address is not reachable from the local node.
Possible Effect: Monitoring of the switch and log collection will not function.
Corrective Actions: Ensure that the IP address is reachable or specify the correct reachable IP address.
Node: ClusterA-01
Alert ID: SwitchUnreachable_Alert
Resource: Switch-A2
Severity: Major
Indication Time: Fri May 03 09:39:18 2024
Suppress: false
Acknowledge: false
Probable Cause: The ethernet switch's IP address is not reachable from the local node.
Possible Effect: Monitoring of the switch and log collection will not function.
Corrective Actions: Ensure that the IP address is reachable or specify the correct reachable IP address.]

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