[mrtg] mrtg latest version and platform question

Raymond Joseph Kopp rjkopp at syr.edu
Fri Oct 3 15:49:11 CEST 2008

Thaks for your reply.

I'll have to figure out a few of these answers.  Then get back to you.

Though I can tell you we monitor about 15 or so routers, and that is

I believe we are using snmp V2.

If rrdtool is what comes with the initial package that is what we use.
(seems familiar - but I'll have to check)

I tend to think that our usage would not be too intensive as our main
interest is just watching our core routers and a few other very
switches or routers that serve very specific needs.

We have some other tools we use for complete campus management and
(mix of NetVigil and CiscoWorks - though we are really re-evaluating
these and
very much undecided in which direction we will go)
We have a router core of about 15 devices (mostly Cisco 6500s and then a
few 3700 
switches for specialized applications such as traffic shaping,
firewalls, and 
some of our most key applications [Active Directory] and our
Applications [PeopleSoft].  Also within that core are devices linking in
locations, usually not bringing in too much traffic, but still needing
traffic analysis and trending.


-----Original Message-----
From: McDonald, Dan [mailto:Dan.McDonald at austinenergy.com] 
Sent: Friday, October 03, 2008 9:39 AM
To: mrtg at lists.oetiker.ch
Cc: Raymond Joseph Kopp
Subject: Re: [mrtg] mrtg latest version and platform question

On Fri, 2008-10-03 at 09:05 -0400, Raymond Joseph Kopp wrote:
> We are currently running mrtg version 2.15.2 on an Intel box running
> Free BSD.

Ok.  To understand your environment, please give a few more details.
How big of an mrtg installation do you have?  Are you monitoring tens,
hundreds, or thousands of devices?

Are you using snmp v3?

Are you using rateup or rrdtool?

if rrdtool, which front-end?

Do you use thresholding?  or read the rrdfiles with another application?

> We are contemplating moving it to a new box preferably with the latest
> version,
> and most likely moving it to a Red Hat OS on a VM instance on a ESX
> platform.
> Has anyone ran into any gotchas or problems that may forwarn us of any
> difficulty
> we may find.  

Depends on the scaling answers above.  rrdtool is disk intensive.  For
my installation, with about 570 devices (and about 8800 targets) I would
not have wanted to try to deal with ESX disk performance.

> Also if anyone knows of any key issues that the latest version broke
> fixed 
> from version 2.15.2 it would be a help.

The CHANGES file is pretty sparse.  Mostly twiddling with the snmp
libraries and adding Holt-Winter's aberrant behavior detection.

Daniel J McDonald, CCIE #2495, CISSP #78281, CNX
Austin Energy

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