Hii

i have question
i try to monitor vcenter with 4 hosts

each host i have 10-15 VM's and multiple IP

when i enter the credential for the vcenter- it detect all the hosts,datastores and all VM's
but it monitor only 30 from 82
30 in health status and the other cant recognized because SNMP problem

i configure the SNMP service in few VM's - but still cant monitor them

 the agent replace the SNMP configuration? it can be the solution?
ther is something wrong in my actions?
did the credencial of each VM i need to configure ? (it is not make any sens )
all the part of this vcenter it that all VM's monitor under the main vcenter IP

please help me understand what i miss here

thanks a lot