Just a basic SNMP related question. I'm just trying to understand the concept of SNMP agent and had the following questions:
1) Normally, do we need to install an agent on the managed system on our own? Or do all hardware come equipped with an SNMP agent already installed?
2) If we install manually, is there any restriction on the agent we can install? Or can I can download any agent and install it and download any management system and start using it with that agent?
I'm just trying to understand the concept of the agent and this basic question is not getting answered clearly in any reading material. I'm not asking about any specific hardware.