Re: [tkined] Scotty and MRTG

pdebono@eur.ko.com
Fri, 22 Jan 1999 13:28:47 +0100

Well, I use both MRTG and Scotty. It is very simple to use Scotty to pull
in the data from your devices then pass the result to MRTG for graphing. To
go one step further, if you read the documentation for MRTG, and look
through the perl code, it would be simple enough to generate the same
graphs yourself from tcl/scotty without using MRTG. However, given the
fact that MRTG is so good already, trying to replicate it's functionality
in tcl seems to me to be a case of re-inventing the wheel.
I have several modified versions of the original MRTG perl code, which
although doing basically the same thing, are now adapted to better suit
what I need. I found this fairly simple to do, so I would highly recommend
installing perl / MRTG and saving yourself the bother of trying to
duplicate the functionality in tcl.

Peter Debono

Technical Consultant,
The Coca-Cola Company.

---------------------- Forwarded by Peter Debono/BE/EUR/TCCC on 01/22/99
01:18 PM ---------------------------

John Stumbles <J.D.Stumbles@reading.ac.uk> on 01/21/99 07:38:35 PM

To: "Sahu, Devaraj" <dsahu@loralorion.com>
cc: tkined@ibr.cs.tu-bs.de (bcc: Peter Debono/BE/EUR/TCCC)
Subject: Re: [tkined] Scotty and MRTG

On Thu, 21 Jan 1999, Sahu, Devaraj wrote:

> Hello,
>
> 1. How can I generate MRTG type graphs (bytes/sec in/out at an
> interface) in Scotty for a Cisco router?

why not use MRTG if that's what you want?!

> 2. Is there an enterprise MIB that I can load to Scotty to track
> performance of a Cisco router or a catalyst switch?

scotty comes with a cisco MIB: to use it you have to edit your
~scotty/lib/init.tcl to include cisco.mib (or do it the proper way with a
~scotty/site/init.tcl file as described in the main init.tcl file).

Look in ~scotty/mibs/cisco.mib and try
~scotty/examples/snmpwalk {some cisco device} cisco
to see what sort of information you can get out.

> Any pointers will be appreciated.

Dunno if this helps, but I've just written a scotty script to get every 10
secs and log to file interface and other stats from a router (Bay Accelar
in this case). The script gets per-box variables like sysUpTime as well as
walking the interfaces and getting per-interface stats like ifInOctets, so
should be a reasonable basis for hacking into what you want to collect.

I plan to write another script (in perl: I'm not too good at Tcl ...
actually I'm not that good at perl either, just less worse :-) to
post-process the stats for other apps including MRTG, and use MRTG to
generate the graphs.

The script is currently at
http://www.rdg.ac.uk/~suqrnine/NOC/Scotty/axlrStats

--
John Stumbles
j.d.stumbles@reading.ac.uk
I.T. Services (Centre), University of Reading
http://www.rdg.ac.uk/~suqstmbl
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       If a job's worth doing, it'll still be worth doing tomorrow.



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