vCenter Server includes an SNMP agent that can send trap notifications and receive GET, GETBULK, and GETNEXT requests.
You can use the appliance shell API commands to enable and configure the vCenter Server SNMP agent. You configure the agent differently depending on whether you want to use SNMP v1/v2c or SNMP v3.
SNMP v3 informs are not supported. vCenter Server supports only notifications such as v1 and v2c traps, and v3 traps with all security levels.