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Date:      Sat, 6 May 2000 09:02:46 -0600 (MDT)
From:      Diana Eichert <deichert@wrench.com>
To:        freebsd-isp@FreeBSD.ORG
Subject:   Re: MRTG / Cisco 3810
Message-ID:  <Pine.GSO.4.10.10005060859140.28437-100000@inago.swcp.com>
In-Reply-To: <Pine.BSF.4.20.0005061520570.78514-100000@mx.webgiro.com>

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Take a look at Cricket, with RRDTOOL as the backend.  It will do an IfName
or IfDescr walk to matchup interfaces/ports to the correct ifIndex if so
configured.  Besides RRDTOOL is the new improved replacement for the MRTG
backend database.

Search for cricket at www.sourceforge.net

diana

On Sat, 6 May 2000, Andrzej Bialecki wrote:

> On Fri, 5 May 2000, Ulf Zimmermann wrote:
> 
> > On Sat, May 06, 2000 at 07:18:11PM -0700, Paul D Kruse wrote:
> > > We have recently upgraded the IOS on our Cisco 3810 from 11.3 to 12.0.  This
> > > router handles our DSL connections.  The reason we upgraded the IOS was
> > > because we wanted to provide PPP access to our customers, in addition to the
> > > Bridged access we already had.  Well in the process, MRTG, which runs on one
> > > of our Free BSD boxes, quit working for the subinterfaces on this router.
> > > The upgrade of the IOS converted the Serial2.32 interface to ATM0.32.
> > > Originally, we were monitoring / graphing down to the PVC level.
> > 
> > Each time you reboot a Cisco, there is the possibility that the index
> > numbers for SNMP change. Example:
> 
> > You now run cfgmaker and configure your mrtg and everything is fine.
> > 
> > Now you add Serial1/0.5 (another subinterface), it will probably become
> > index 11. But what happens when you reboot now ? The IOS will number
> > the interfaces again. Serial1/0.5 will become Index 6, Serial 2/0 becomes
> > 7, Serial 2/0.1 becomes 8, etc.
> 
> You can patch mrtg to use interface descriptions instead (that is, if you
> set them before to some unique values). They are available as part of the
> enterprise MIB.
> 
> Andrzej Bialecki
> 



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