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NVIDIA cluster switches monitor is false due to invalid SNMP settings

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Category:
ontap-9
Specialty:
HW
Last Updated:

Applies to

  • ONTAP 9
  • Cluster Network Switches
  • Cluster Switch Health Monitoring(CSHM)
  • MSN2100-CB2FC

Issue

  • Cluster switch reports the monitoring to be false with reason being Invalid SNMP settings

Cluster::*> system switch ethernet show
Switch Type Address Model
--------------------------- ------------------ ---------------- ---------------
Cluster-sw1 (94:xx:xx:xx:xx:98) cluster-network 10.XXX.XX.109 MSN2100-CB2FC
   Serial Number: MT2302T000TP
    Is Monitored: false
          Reason: Invalid SNMP Settings
Software Version: Cumulus Linux version 5.4.0 running on Mellanox
                  Technologies Ltd. MSN2100
  Version Source: LLDP

  • Reachability to switches are successful from Cluster (Ping and TraceRoute)
  • SwitchSNMPCommunication_Alert can be seen in system health alert show

Cluster::*> system health alert show
              Node: Node-08
          Alert ID: SwitchSNMPCommunication_Alert
          Resource: Cluster-sw1 (94:xx:xx:xx:xx:98)
          Severity: Major
   Indication Time: Thu Jul 17 04:02:08 2025
          Suppress: false
       Acknowledge: false
    Probable Cause: SNMP communication from the node to the ethernet
                    switch has failed repeatedly. Invalid SNMP settings
                    are configured with ONTAP Switch Health Monitoring or
                    on the Ethernet switch.
   Possible Effect: Ethernet switch communication problems and
                    accessibility issues.
Corrective Actions: 1) Check the SNMPv2c community or SNMPv3 username on the Ethernet switch to verify
                       that the expected community string or username is configured.
                       To view the expected community string or username, run the "system switch ethernet show -snmp-                           config" command.
                    2) (SNMPv3) Verify that the SNMPv3 credentials are present within ONTAP.
                       To view the established SNMP logins, run the "security login show -application snmp" command.
                       If a custom engine-id was provided for the SNMPv3 user,ensure it is same as that of the remote                           switch.

  • Switch-Health Subsystem reports to be degraded

Cluster::*> system health subsystem show
Subsystem Health
----------------- ------------------
SAS-connect         ok
Environment         ok
Memory              ok
Service-Processor   ok
Switch-Health       degraded
CIFS-NDO            ok
Motherboard         ok
IO                  ok
MetroCluster        ok
MetroCluster_Node   ok
FHM-Switch          ok
FHM-Bridge          ok
SAS-connect_Cluster ok
13 entries were displayed.

  • Attempt to delete the switches from monitoring and adding back fails with the below error
::> system cluster-switch create -device Cluster-sw1 -address 10.XXX.XX.109 -snmp-version SNMPv2c -community cshm1! -model OTHER -type cluster-network -is-monitoring-enabled-admin true
Error: SNMP validation request timed out. Verify that the "-community-or-username" value is valid.

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