Simple Network Management Protocol is the master Agent that is responsible for receiveing SNMP requests, then delivering them to the appropriate extension agent DLL. Simple Network Management Protocol (SNMP) is part of the Transmission Control Protocol/Internet Protocol (TCP/IP) Suite, Application Layer, that is used manage various network objects/devices with network-wide rules/management . How it works -SNMP Managers poll SNMP Agents for information relevent to network rules/management. SNMP Agents retreive/update local network rules/management and send traps(change notices) back to the SNMP Manager. Dynamic Link Library (DLL) -files containing programing code that can be loaded/run when required to perform a function and can be shared/used by numerous programs.