Chapter 9 High Availability for FortiOS 5.0 : Operating a cluster : Clusters and SNMP : SNMP get command syntax - reserved management interface enabled
  
SNMP get command syntax - reserved management interface enabled
To get configuration and status information for any cluster unit where you have enabled the HA reserved management interface feature and assigned IP addresses to the management interface of each cluster unit, an SNMP manager would use the following get command syntax:
snmpget -v2c -c <community_name> <mgt_address_ipv4> {<OID> | <MIB_field>}
where:
<community_name> is an SNMP community name added to the FortiGate configuration. You can add more than one community names to a FortiGate SNMP configuration. The most commonly used community name is public.
<mgt_address_ipv4> is the IP address of the FortiGate HA reserved management interface that the SNMP manager connects to.
{<OID> | <MIB_field>} is the object identifier (OID) for the MIB field or the MIB field name itself. To find OIDs and MIB field names see your FortiGate unit’s online help.
See “To get CPU, memory, and network usage of each cluster unit using the reserved management IP addresses”.