Everything about SNMP

Simple Network Management Protocol

It has mainly three components
1) Managed Devises
2) Agents
3) Network Management Systems

Managed Devises
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It can be computer, routers, switches, printers, hub etc

Agent
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Agent is a softwares program residing inside the devices.
It translates the information into the format compatible with SNMP.

Network Management System (NMS)
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NMS runs monitoring applications.It provides bulk processing and memory resources required for the
network management.

SNMP VERSION1 was the first development of the SNMP protocol.
Its description can be found in RFC 1157.
It works within the specification of SMI (Structure of management of Information).
It works on the UDP, IP, CLNS, AppleTalk Datagram Delivery Protocol (DDP) and Novell IPX(Internet Packet Exchange).