[mrtg] Re: Router appears to drop out, but provider sayes its ok
Nick Earle
Nick_Earle at bat.com
Fri Apr 25 16:47:15 MEST 2003
This link currently has a CIR = 3Mb and the Circuit is 4Mb so I've set the MaxBytes and AbsMax values as follows:-
MaxBytes 384000
AbsMax 512000
Which I thought would allow enough scope for bursting.
Regards,
Nick Earle
Daniel J McDonald
<dan.mcdonald at austine To: Nick Earle <Nick_Earle at bat.com>
nergy.com> cc: (bcc: Nick Earle/London/GB/BAT)
Subject: Re: [mrtg] Router appears to drop out, but provider sayes
25/04/2003 13:22 its ok
On Fri, 2003-04-25 at 05:18, Nick Earle wrote:
> I'm using MRTG to monitor around 150 routers.
>
> On a couple of the bigger routers (CIR=4Mb) I'm getting 'dropouts' every 4 hours. The period between dropouts is proportional to the amount of traffic, so if there is more traffic the dropouts appear more frequently. Our network service provider is assuring me that there dropouts are not real!
Do you have maxbytes = CIR, or are you setting maxbytes = PIR?
If Maxbytes=CIR and you burst above CIR, MRTG will assume the
information it received was bogus and will discard it.
If you want to maintain the look of your graphs, you might try setting
maxbytes=CIR and Absmax=PIR.
>
> I was wondering if this might be caused by counter overflow?
>
not at 4mb/s. 134mb/s, sure, but not 4.
> Does anyone now if there is a setting I can use to handle counter overflows more elegantly?
>
> Regards,
>
> Nick Earle
--
Daniel J McDonald, CCIE 2495, CNX
Austin Energy
Confidentiality Notice: The information in this document and
attachments is confidential and may also be legally privileged.
It is intended only for the use of the named recipient. Internet
communications are not secure and therefore British American
Tobacco does not accept legal responsibility for the contents of
this message. If you are not the intended recipient,please notify us
immediately and then delete this document. Do not disclose the
contents of this document to any other person, nor take any copies.
Violation of this notice may be unlawful.
--
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