SNMP

Simple Network Management Protocol - Not As Simple As You Would Suggest

The Simple Network Management Protocol (SNMP) has been an integral part of monitoring network environments since its introduction in 1988. It has established itself as the de facto standard in network monitoring. Many manufacturers support the protocol and have implemented an SNMP agent on their network devices. These agents allow monitoring solutions to query various data, such as bandwidth, CPU load, network interfaces, etc., without installing an additional agent on network equipment. 

SNMP

How would you find out how much RAM is free on your Linux desktop? That's a really easy question with a lot of answers—free, any of the implementations of top and Glances all are valid responses.