SwitchCommunityStringAlert due to invalid or missing community string on cluster network switch
Applies to
- ONTAP 9
- AFF
- FAS
- Cluster Network Switch
- CN1610
- CISCO Nexus Switch
Issue
- After a reboot of FAS/AFF,
SwitchCommunityString_Alert
the health alert is triggered by Cluster Switch Health Monitor (CSHM). - This generates the following Active IQ notification:
HA Group Notification (Health Monitor process cshm: SwitchCommunityString_Alert[switch01]) ALERT
- The
system health subsystem show
reports the Switch-Health subsystem as degraded.
Cluster::> system health subsystem show
Subsystem Health
----------------- ------------------
SAS-connect ok
Environment ok
Memory ok
Service-Processor ok
Switch-Health degraded
- The
system health alert show
the command displays the error below:
Cluster::> system health alert show
Node: Node-04
Resource: cluster-sw-01(serial-number)
Severity: Major
Indication Time: Wed Sep 14 13:45:36 2022
Suppress: false
Acknowledge: false
Probable Cause: Ethernet switch "Cluster-sw-01(serial-number)" with IP
address "10.XX.XX.XX" is not reachable via SNMP.
Incorrect SNMP community string might be configured on the Ethernet switch.
Possible Effect: Ethernet switch communication problems and accessibility issues.
Corrective Actions: Check the SNMP community string on the Ethernet switch
to verify that the expected community string is configured.
Use the "system switch ethernet show -snmp-config" command to view the expected
community string.
CSHM-SWITCH-CONFIG.XML
via ASUP displays the error below.
Switch Monitoring Status: false
Reason For Not Monitoring: Invalid SNMP Settings