SNMP - Simple Network Management Protocol is a popular protocol for network management. It is used for collecting information from, and configuring, network devices, such as servers, printers, hubs, switches, and routers on an Internet Protocol (IP) network. SMTP - Simple Mail Transfer Protocol is an Internet standard for electronic mail transmission. SCCP - The Signalling Connection Control Part is a network layer protocol that provides extended routing, flow control, segmentation, connection-orientation, and error correction facilities in Signaling System 7 telecommunications networks.