Please check whether net-snmp package version is 5.1, this version doesn't support AES encryption.
Possible Cause: The SNMP device was unable to decrypt the SNMP V3 Read/Write request because the encryption passphrase and/or authentication styles do not match. Solution: Verify that the encryption passphrases and authentication styles set in the SNMP device configuration match those specified in the SNMP Driver's Device Properties. You need to add it in OpenSSL and check whether there is some issue with persistent snmpd.conf settings.
