Simple Network Management Protocol (SNMP) allows management programs to monitor and control a variety of networked devices.

Managed systems run SNMP agents, which can provide information to a management program in at least one of the following ways:

In response to a GET operation, which is a specific request for information from the management system.

By sending a trap, which is an alert sent by the SNMP agent to notify the management system of a particular event or condition.

Optionally, you can configure ESXi hosts to convert CIM indications to SNMP traps, allowing this information to be received by SNMP monitoring systems.

Management Information Base (MIB) files define the information that can be provided by managed devices. The MIB files contain object identifiers (OIDs) and variables arranged in a hierarchy.

vCenter Server and ESXi have SNMP agents. The agent provided with each product has differing capabilities.