DELL OpenManage 7.3 on ESXi5.1

DELL OpenManage 7.3 on ESXi5.1

I installed Dell OpenManage 7.3 VIB on ESXi5.1 host. I assumed that VIB
will load all DELL specific MIBs into OS. I enabled snmpd on that host as
well, but when I am doing "snmpwalk" or "snmpget" I do not get information
on Dell specific OIDs
The source of the VIB:
DELL OpenManage 7.3 VIB
The output i get:
nmpget -v2c -c public myesxi.domain.com 1.3.6.1.4.1.674.10892.1.300.10.1.8.1
SNMPv2-SMI::enterprises.674.10892.1.300.10.1.8.1 = No Such Object
available on this agent at this OID
I do get OIDs from VMWare stack, but not the Dell ones. Eventually I want
to use nagios plugin "check_openmanage" but it apparently gives me an
error as it cannot query Dell OID's
Am I missing something?