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To achieve this, one needs to use an OID.
In the Simple Network Management Protocol (SNMP), OID means an 'Object Identifier'.
To define OID, it's an address used to uniquely identify managed devices and their statuses.
In FortiGate there are two SNMP traps so, enable 'HA cluster status change and HA heartbeat interface failure'.
So that when there would be failover, The FortiGate will send ha cluster status change trap to the SNMP managers.
1) HA cluster status change (fgtraphastatuschange).
2) HA heartbeat interface failure (fgtraphahbfail).
OID for HA in FortiGate are those that can be mention in the SNMP manager.
| OID |
TRAPS |
DESCRIPTION |
| 1.3.6.1.4.1.12356.101.2.0.402 |
fgTrapHaStateChange |
Trap being sent when the HA cluster member changes its state.
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| 1.3.6.1.4.1.12356.101.2.0.401 |
fgTrapHaSwitch |
The specified cluster member has transitioned from a slave role to a master role.
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| 1.3.6.1.4.1.12356.101.2.0.403 |
fgTrapHaHBFail |
The heartbeat device failure count has exceeded the configured threshold.
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| 1.3.6.1.4.1.12356.101.2.0.404 |
fgTrapHaMemberDown |
The specified device (by serial number) is moving to a down state.
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| 1.3.6.1.4.1.12356.101.2.0.405 |
fgTrapHaMemberUp |
A new cluster member has joined the cluster.
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Once the required OID is mentioned and whenever the OID gets triggered user will receive an alert indicating changes happened as per the OID.
To get the values, one can do a SNMP walk for the OID values with any free SNMP walk software.
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