Hi ravideol,
Firstly make sure ILO are Gen8 and above beause the lower generations are not supported by SIM.
Do the discovery for the ILO using SNMP communication meaning- Configure SNMP community string on the ILOs and give the same string in credentials while discovering. Also, add the SIM server's IP address as SNMP trap destination on the IILO. You should all be good.
You may check the link below for more information: and Give me Kudos if it works:
http://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c03306157
Vishal Ch.
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