[mrtg] Re: ATM pvc utilization - router config & mib doesn't tally

[Charles R. Wolfe]

David,

I asked this question a couple of weeks ago and found the answer from some
helpful people. The difference is the ATM overhead that is not being counted. I
modified my script to account for this overhead so that management would stop
giving me a hard time about the graph not matching up with the available
bandwidth of our connection.

-Chuck

David Lee Haw Ling wrote:

> Hi,
>
> I have a ATM pvc that I would like to monitor.  What is being configured
> and what I get from mibs differ greatly.
>
> Router config:                                  45Mbps (UBR)
> Mib value from router (cAal5VccInOctets):       32Mbps (at full utilization)
> Mib value from ATM switch (ciscoAtmVclInCells): 40Mbps (at full
> utilization)
>
> Actual router config is as follow:
>
>  atm pvc 6 55 230 aal5snap 45000 45000 inarp 1
>
> Any idea why the mib values doesn't tally with what it is being
> configured.  Noticed that there is a rate limiting command that I can
> use on the enhanced ATM card, "traffic-rate".  Should rate limiting be
> used instead?
>
> Thanks.
>
> --
> Unsubscribe mailto:mrtg-request at list.ee.ethz.ch?subject=unsubscribe
> Archive     http://www.ee.ethz.ch/~slist/mrtg
> FAQ         http://faq.mrtg.org    Homepage     http://www.mrtg.org
> WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi


--
Unsubscribe mailto:mrtg-request at list.ee.ethz.ch?subject=unsubscribe
Archive     http://www.ee.ethz.ch/~slist/mrtg
FAQ         http://faq.mrtg.org    Homepage     http://www.mrtg.org
WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi