Hello Craig
This are the same switches that were working wih previus JFFNMS
installation. So I dont think this problem is related to the bug you
mentioned, it was working with the same JFFNMS version.
Thanks
2010/6/29 Craig Small <[email protected]>
> On Mon, Jun 28, 2010 at 10:23:29PM -0300, Martin Parodi wrote:
> > Thanks again Craig, now you solved part of the problem, but I continue
> > with the problem but now on all interfaces traffic, just a few
> interfaces.
> > The strange issue is that I cant see only vlan interfaces traffic
> graphs,
> > but gigabit or fastethernet interfaces are working fine.
> Sounds like a Cisco switch.
> Certain switches do not report the correct amount of traffic on vlan
> interfaces. It's a "feature" of the switch rather than JFFNMS (or
> mrtg). Even the "show interfaces" command gives the wrong number.
>
> I recall seeing this issue back in the early 90s. A quick google of
> phrases like mrtg and vlan shows it still a problem.
>
> In short: cisco + vlan = bad counters
>
> I'd hate to think of the number of network engineers that have torn
> their hair out about this bug, you look at the vlan interface, you look
> at the physical interface... "but but the traffic must be going
> SOMEWHERE!"
>
> Deep down in the Cisco documents somewhere it probably explains it, but
> like most Cisco documents you can never find them!
>
> - Craig
>
> --
> Craig Small GnuPG:1C1B D893 1418 2AF4 45EE 95CB C76C E5AC 12CA DFA5
> http://www.enc.com.au/ csmall at : enc.com.au
> http://www.debian.org/ Debian GNU/Linux, software should be Free
>
>
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--
Martin Parodi
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