Ubiquiti EdgeRouters require a specific syntax to enable SNMPv3, see the following entry for details.
The following commands can be used to create a SNMPv3 authpriv configuration on your EdgeRouter to view entire oid from .1 onwards
set service snmp v3 view VIEW oid 1 set service snmp v3 group SNMP mode ro set service snmp v3 group SNMP seclevel priv set service snmp v3 group SNMP view VIEW set service snmp v3 user snmpuser auth type sha set service snmp v3 user snmpuser auth plaintext-key someauthpw set service snmp v3 user snmpuser privacy type aes set service snmp v3 user snmpuser privacy plaintext-key someprivpw
You can double check the configuration with a snmpwalk
# snmpwalk -v3 -a SHA -A someauthpw -u snmpuser -x AES -X someprivpw -l authPriv 192.168.100.57