[mrtg] Re: Lets talk Conversions

[Andreas Nolte]

Hi,

here is an example of a 45MB T1 link and a max. useable bandwidth of E3 (34MB).
The values are displayed correct.

*************************************************************************

Target[ffm2.0.3.0.0]: 1.3.6.1.2.1.2.2.1.10.22&1.3.6.1.2.1.2.2.1.16.22:20data00 at ffm2
RouterUptime[ffm2.0.3.0.0]: 20data00 at ffm2
Options[ffm2.0.3.0.0]: growright, bits, nopercent
MaxBytes[ffm2.0.3.0.0]: 4250000
AbsMax[ffm2.0.3.0.0]: 5625000
Suppress[ffm2.0.3.0.0]: y
Title[ffm2.0.3.0.0]: Peering Point Sprint
YLegend[ffm2.0.3.0.0]: Bits/sec
ShortLegend[ffm2.0.3.0.0]: B/s
Legend1[ffm2.0.3.0.0]: In Bits/sec
Legend2[ffm2.0.3.0.0]: Out Bits/sec
LegendI[ffm2.0.3.0.0]:  In Bits/sec:
LegendO[ffm2.0.3.0.0]:  Out Bits/sec:
PageTop[ffm2.0.3.0.0]: <H1>Ffm2 Peering Point Sprint 

************************************************************************

The ifInOctets and the ifOutOctets are displayed. The values are divided by 8 like the MRTG description (45MB / 8 = 5625000 and 34MB / 8 = 4250000).

Regards

Andreas







On Thu, 13 Dec 2001 07:33:51 -0600
Troy Arnold <Tarnold at norwood.com> wrote:

> 
> OK OK so I one minute I think I have the correct number for MaxBytes and the
> next my graphs don't make a whole lot of sense.  Someone please check me
> here.
> 
> 
> Bits ( b )       Bytes   ( B )         Kilobits ( Kb )          Megabits  (
> Mb )
> 
> We use 1024 as a factor for conversion and when moving to the left we always
> multiply
> For Example
> 
>    Bits ( B )              Bytes  ( b )             Kilobits ( Kb )
> Megabits  ( Mb )
> 12910592B    x8     1613824b      x1024   1576Kb           x1024      1.54Mb
> 
> 
> 
> 
> If this is correct math then what the MRTG documentation has is incorrect.
> The example given in my documentation says that a T1 = 193000b
> 
> I am using the [Option]: bits
> 
> and if I am not mistaken MRTG config files wants the number in Bytes ( hence
> the option [MaxBytes].  Cisco routers report numbers in bits usually so what
> is going here.  My graphs so barley any traffic.  
> 
> Do I need to go back to Math School???
> 
> Troy
> 
> --
> 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
> 


-- 
******************

Andreas Nolte
Email: anolte at ccietac.de


--
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