Hello there,
You can't exclude the error, this i as you said a WBEM monitoring option but the status you receive is a SNMP polling status. So that doed not work. Only ESX WBEM agents work with this option and since the Gen8 hardware we use AMS and ILO for monitoring. You should be able to disable the unsused if it has function. The missing link is not a real hardware issue but i guess that HP thinks it is.
Also look at this post for some options : http://community.hpe.com/t5/Systems-Insight-Manager-Forum/HP-SIM-reporting-quot-A-network-interface-has-failed-or/td-p/4796562
