[mrtg] Re: 114 Mbps: Strange grpahs
Guðmundur Ö. Ingvarsson
gudmundur.ingvarsson at islandssimi.is
Fri May 25 13:12:34 MEST 2001
Alrighty.. That cuased the entire ATM node network to stop responding to my
requests until I removed the :::::2
Does anyone have any other ideas?
Kveðja / Regards
======================================
Guðmundur Örn Ingvarsson
Chief technician of daily operations /
Rekstrarstjóri á rekstrarborði
Íslandssími hf
Web Site - http://www.islandssimi.is
E-Mail - gudmundur.ingvarsson at islandssimi.is
Buisness phone - +354 595 5074
Mobile phone - +354 820 5074
======================================
David Sawyer
<david.sawyer at uk.mc To: 'Guðmundur Ö. Ingvarsson' <gudmundur.ingvarsson at islandssimi.is>, mrtg at list.ee.ethz.ch
khboc.com> cc:
Subject: RE: [mrtg] Re: 114 Mbps: Strange grpahs
05/25/2001 10:27
That is in the manual (reference.html)
add 5 colons (:) and a number 2 to the end of your target.
ie
Target[ezwf]: 2:public at router1:::::2
> -----Original Message-----
> From: Guðmundur Ö. Ingvarsson
[SMTP:gudmundur.ingvarsson at islandssimi.is]
> Sent: Friday, May 25, 2001 11:25 AM
> To: mrtg at list.ee.ethz.ch
> Subject: [mrtg] Re: 114 Mbps: Strange grpahs
>
>
>
> Well.. I tried putting an AbsMax at far beyond the maximum capacity for
> the
> lines.
>
> This seems only to happen on my 2 45MB connections and the ATM
connections
> ranging
> from 155 Mb to 622Mb.
>
> How do I change the bits to this 64-bit special.
>
> Kveðja / Regards
>
> ======================================
> Guðmundur Örn Ingvarsson
> Chief technician of daily operations /
> Rekstrarstjóri á rekstrarborði
> Íslandssími hf
> Web Site - http://www.islandssimi.is
> E-Mail - gudmundur.ingvarsson at islandssimi.is
> Buisness phone - +354 595 5074
> Mobile phone - +354 820 5074
> ======================================
>
>
>
>
> George Nease
>
> <George.Nease at dig To: mrtg at list.ee.ethz.ch
>
> .com> cc:
>
> Sent by: Subject: [mrtg] 114
Mbps:
> Strange grpahs
> mrtg-bounce at list.
>
> ee.ethz.ch
>
>
>
>
>
> 05/24/2001 16:13
>
>
>
>
>
>
>
>
>
>
> Lars Holmström recently covered this pretty well, so I'll quote him; it
> perfectly describes what we are seeing here (and maybe what you're
> seeing),
> and why we're converting to RRD:
>
> "One limitation to keep in mind is that the default configuration file
> generated
> by MRTG cannot accurately measure bandwidth above about 114 Mbps
(Megabits
> per
> second). The reason is that the default interface counter is a 32-bit
> number,
> and a 32-bit number will rollover twice in a period of 5 minutes at more
> than
> 114 Mbps. (232 = 4,294,967,296 bytes, multiplied by 8 (bits in a byte),
> divided
> by 300 seconds in 5 minutes, is 114,532,641 bits per second, or roughly
> 114
> Mbps.) MRTG or any other SNMP program cannot correctly account for a
> double
> rollover. The graph will appear to peak at about 114 Mbps and never go
> beyond
> that, when in reality the interface could be running well beyond that
> rate.
> To
> get around this, you must change the configuration file to pole a special
> 64-bit
> interface counter, or poll MRTG more frequently than 5 minutes."
>
> (by Lars Holmström [lars.holmstrom at flysta.net])
>
> -----Original Message-----
> From: Guðmundur Ö. Ingvarsson
> [mailto:gudmundur.ingvarsson at islandssimi.is]
> Sent: Thursday, May 24, 2001 9:02 AM
> To: mrtg at list.ee.ethz.ch
> Subject: [mrtg] Strange grpahs
>
>
>
> Does anyone know how to get strange empty lines from the mrtg day graph.
>
> I get strange cuts into the graphs like traffic went down even though it
> didn´t
>
> Kveðja / Regards
>
> ======================================
> Guðmundur Örn Ingvarsson
> Chief technician of daily operations /
> Rekstrarstjóri á rekstrarborði
> Íslandssími hf
> Web Site - http://www.islandssimi.is
> E-Mail - gudmundur.ingvarsson at islandssimi.is
> Buisness phone - +354 595 5074
> Mobile phone - +354 820 5074
> ======================================
>
>
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