[rrd-users] Re: [rrd-developers] Regarding Integration with MRTG/RRD

[Alex van den Bogaerdt]

Venkatesh Ramachandran wrote:

> Hello everyone,
>    I work on a Network Management tool called Internetwork Performance
> Monitor, one of Cisco's set of Troubleshooting and
> Monitoring applications. I was trying to integrate our application with
> MRTG.
>    I was interested in understanding the following points:
> 
>    * From the MRTG website and other web resources, i understand that
>      MRTG always need an SNMP agent to get the     information. Is my
>      understanding correct?

Not entirely.  MRTG primarily gets its data from SNMP. However, it has
the external program interface which allows you to use an external
program to deliver similar data as SNMP would.

RRDtool can be the backend for MRTG, as opposed to rateup, that stores
the data into a database.

>    * Can an application integrate with MRTG ? For example, can another
>      application, that collects data  from the routers/switches etc..,
>      supply data from its Database, in a specific format, so that MRTG
>      can plot the graphs?
>    * Is it possible somehow to supply data to the RRD tool from another
>      Database, instead of data being collected from the device itself?

MRTG, nor RRDtool, is a drawing program.  Sure, you can fetch data from
another database and import it into either the log file or the RRD.  It
isn't necessary to use MRTG for that.  Writing some interface to rateup
or to rrdtool will allow you to enter data.  It has to be done sequentially
from old to new.

In essence you'd be emulating real-time updates.

HTH
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