SNMP Configuration Example!! | Network Configs | IPCisco.com . SNMP is an application–layer communication protocol that allows network devices to exchange management information among these systems and with other devices outside the network. An SNMP system consists of four key components: network management system (NMS), SNMP agent, managed object, and management information base (MIB). The NMS manages network elements on a network. Each managed device contains an SNMP agent process, a MIB, and