Receiving Authentication Failure Trap alarms in Opmanager
Issue: Authentication Failure error messages in OpManager
Authentication failure alarm is due to some monitoring system trying to access the device with wrong community string including OpManager , It may be opmanager or some other monitoring system installed in your network sending snmp queries with wrong community strings.
Please use our bulk "Test Credential" option under admin tab and make sure your devices are configured with correct SNMP read community and are getting passed, if all the devices are passing SNMP credential test then it may be due to some other devices on the network contacting the device with wrong SNMP read community.
As a final step we can install any packet sniffer software Ethereal(www.ethereal.com) or Wireshark capture packets to see which device is sending request with wrong SNMP community.
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