configure SNMP in the OLT ,reference below snmpV2 configuration example:
snmp-agent community read public123
snmp-agent community write private123
snmp-agent sys-info version v2c
snmp-agent trap enable standard
snmp-agent target-host trap-hostname NCER19-Pri address 10.10.10.10 trap-paramsname NCER19-01
snmp-agent target-host trap-paramsname NCER19-01 v2c securityname 10.10.10.10
snmp-agent trap source vlanif 200
save
2. create snmp template in NCE or esight .
create snmp template from NCE

create snmp template from esight

3. add device to NCE or esight
from NCE add OLT

from esight add OLT:
