[mrtg] Re: Link Errors on Router

Larry Sheldon lsheldon at creighton.edu
Wed Mar 28 15:21:40 MEST 2001


> Cant seem to get this to work..
> 
> This is the config. Its Port 1 on the Router
> (Serial Link) and it runs errors.
> 
> 
> Config :
> 
> Target[router.1err]: ifInErrors.1&ifOutErrors.1:public at router
> MaxBytes[router.1err]: 9900000
> Options[router.1err]: Growright, nopercent, integer
> YLegend[router.1err]: Errors
> ShortLegend[router.1err]: &nbsp
> Title[router.1err]: Router Link Errors
> PageTop[router.1err]: <H1>Error Analysis for Link</H1>
> 
> 
> snmpwalk 
> 
> (mrtg)[/usr/local/mrtg] root#snmpwalk router public ifInErrors
> interfaces.ifTable.ifEntry.ifInErrors.1 = 3757288
> 
> (mrtg)[/usr/local/mrtg] root#snmpwalk router public ifInErrors
> interfaces.ifTable.ifEntry.ifInErrors.1 = 3757289
> 
> ie they increase, but the mrtg graph is not changing.
> 
> Log Files..
> 
> 985751326 3757286 0
> 985751326 0 0 0 0
> 
> And the lines following are all "0 0 0 0 "
> 
> What have I done wrong or might be wrong ?

Here is my take.....

Unless the link is really seriously broken, the error rate is going to
be much less than 1 a second, which is going to (with integer aritmetic)
slide-rule out (that is a metaphor for realy old times, isn't it?) to
right around zero.

I don't have the arithmetic at hand an I'm too lazy to go dig it out
but the approach I use is to do the arithmetic necessary to get from
the "bytes per second" kind of thinking that MRTG does when unmolested
to "errors per hour" which I then graph.

> 
> Any help appreciated.

If that doesn't do it, I'll no doubt be on the machine where MRTG lives
here later today--I'll try to remember to fetch the actual arithmetic I use,
but you can see an example of the product at:
http://hummingbird.creighton.edu/mrtg/creighton-internet-serial.errors.html

--
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
.                                                                       .
- L. F. (Larry) Sheldon, Jr.                                            -
. Unix Systems and Network Administration                               .
- Creighton University Computer Center-Old Gym                          -
. 2500 California Plaza                                                 .
- Omaha, Nebraska, U.S.A.  68178       Two identifying characteristics  -
. lsheldon at creighton.edu                  of System Administrators:     .
- 402 280-2254 (work)                Infallibility, and the ability to  -
. 402 681-4726 (cellular)               learn from their mistakes.      .
- 402 332-4622 (residence)                                              -
. http://www.creighton.edu/~lsheldon    Adapted from Stephen Pinker     .
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-

--
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



More information about the mrtg mailing list