I have tried configuring snmp as suggested and it works.
DL380 Gen9
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/etc/redhat-release
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Red Hat Enterprise Linux Server release 6.6 (Santiago)
# rpm -qa|grep hp
hponcfg-4.5.0-0.x86_64
hpsmh-7.5.0-4.x86_64
hpssacli-2.20-11.0.x86_64
hpdiags-10.34.1914-1896.x86_64
hpsum-7.2.1-6.rhel6.x86_64
hp-snmp-agents-10.20-2789.26.rhel6.x86_64
hp-ams-2.2.0-1688.44.rhel6.x86_64
hp-smh-templates-10.2.0-1429.26.noarch
hp-health-10.20-1723.28.rhel6.x86_64
