The SNMP (Simple Network Management Protocol) is a way of quick and simple supervision of network elements and services.
It is being increasingly used for monitoring the environment where these elements work. Mainly due to the possibility to monitor the temperature, humidity and other values in the same monitoring software as the other operating parameters of the system. The SNMP was originally designed to be extremely economical and to exist above the UDP protocol. This was to be sure the network management does not put a high load on the network itself. Today in times of gigabite and faster networks the priorities are a little bit different and thus the SNMP got a lot of extensions and improvements.