- What is the difference between version 1 / 2c / 3
- How to configure SNMP on specific devices
What you are going to learn:
If you are configuring SNMP for the first time, you might be wondering which SNMP version to configure? Out of the three versions, the version 3 is the most secure. It enables encryption and authentification of the SNMP messages but it's also more complex to configure on some devices. This is why a lot of people choose to use version 2c, which only requires a password (named SNMP Community) and does not encrypt all the messages.
If you are having trouble with version 3 configuration, take a look at version 2c to make sure there is no connectivity issues between the monitoring agent and the device. When it's working with version 2c, then you can give a try with version 3.
There are no real reasons to use SNMP version 1 except if it's the only version available on your device.
Here is a list of tutorials and manuals on how to configure SNMP on some devices. Note that only a read-only access is required (not read-write) and that SNMP Traps should not be configured to use the device monitoring feature.