Why do we use RRDtool in MRTG?

Hi Guys,

Why do we use RRDtool in MRTG?

I have implemented MRTG for some routers,
I have read some notes about RRDTOOL also but don't know what is use of these tool.

Any one one please explain me the use of RRDTOOL in their own words?

Not my words :slight_smile:

From MRTG - How to use RRDtool with MRTG - the official RRD project page.