SwitchUnreachable_Alert due to network issues

Last updated

Apr 21, 2025
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Visibility:: Public

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Category:: fabric-interconnect-and-management-switches

Specialty:: hw

Last Updated:: 4/21/2025, 11:24:11 PM

Applies to

ONTAP 9
FAS/AFF Systems
Cluster switches

Issue

From AutoSupport: SwitchUnreachable_Alert reported in the system

[Node_01: cshmd: hm.alert.raised:alert]: Alert Id = SwitchUnreachable_Alert , Alerting Resource = SW1(FOCXXXXXXXX) raised by monitor ethernet-switch

[Node_01: cshmd: hm.alert.raised:alert]: Alert Id = SwitchUnreachable_Alert , Alerting Resource = SW2(FOCXXXXXXXX) raised by monitor ethernet-switch

One or more nodes failed communicating with the cluster switches

Following also seen when you run below command

undcdsa-fasb12::> system health alert show
               Node: undcdsa-fasb12
           Alert ID: SwitchUnreachable_Alert
    Resource: undcdsa-nsdb01(FDO26390U4P)
           Severity: Major
    Indication Time: Mon Mar 10 14:42:11 2025
 Suppress: false
        Acknowledge: false
     Probable Cause: The ethernet switch's IP address is not reachable fromthe 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: undcdsa-fasb12
Alert ID: UnsupportedSwitch_Alert
           Resource: undcdsa-nsdb01(FDO26390U4P)
           Severity: Major
    Indication Time: Mon Mar 10 14:42:33 2025
           Suppress: false
        Acknowledge: false
     Probable Cause: Unsupported Ethernet switch is detected.
    Possible Effect: Communication problems and network connectivity issues occur.
Corrective Actions: Unsupported Ethernet switch "undcdsa-nsdb01(FDO26390U4P)" found. Connectsupported Ethernet switch to the network.

The cluster switch is not under monitoring by the Cluster Switch Health Monitor (CSHM):
- ClusterA::> system switch ethernet show Switch Type Address Model --------------------------- ------------------ ---------------- --------------- switch_A_1(xxxxxxxxxxx) cluster-network 10.1.1.X NX3132V Serial Number: xxxxxxxxxxx Is Monitored: false Reason: IP address not reachable Software Version: Cisco Nexus Operating System (NX-OS) Software, Version 7.0(3)I4(1) Version Source: CDP
  Copied
This results in switch health being degraded:

::> system health subsystem show Subsystem Health ----------------- ------------------ SAS-connect ok Environment ok Memory ok Service-Processor ok Switch-Health degraded CIFS-NDO ok Motherboard ok