What is the SNMP component that aggregates all SNMP messages and polled metrics?

The Simple Network Management Protocol (SNMP) utilizes a component called the network management station (NMS) to collect all messages and poll metrics from all managed devices. An SNMP trap is a message generated from an SNMP agent installed on a host. An SNMP agent is a piece of software that monitors the operating system and hardware and either reports to the NMS or is polled by the NMS. A syslog server is a centralized server that collects logs for passive analysis of problems.