[mrtg] Incorrect MRTG plots for Cisco-RTTMON-MIB

[Raman Dhanoa]

The returned value is an integer. Also when i do snmpget operation via MIB browser the value is returned as gauge, not as counter. 
I think question i should be asking how does MRTG plot a 'gauge' returned value? i have also noticed the "current" value on the MRTG never matches the CLI or MIB browser output, Its always little bit off. 
 
Thanks

--- On Thu, 18/12/08, Sean Cheesman <scheesman at caeveo.com> wrote:


From: Sean Cheesman <scheesman at caeveo.com>
Subject: Re: [mrtg] Incorrect MRTG plots for Cisco-RTTMON-MIB
To: "mrtg at lists.oetiker.ch" <mrtg at lists.oetiker.ch>
Received: Thursday, 18 December, 2008, 1:27 PM



#yiv1996123219 P {
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What sort of data is returned?  It could be that MRTG is handling the data differently due to the format (decimals vs. whole numbers, etc.)
 


From: mrtg-bounces at lists.oetiker.ch [mrtg-bounces at lists.oetiker.ch] On Behalf Of Raman Dhanoa [dhanoaraman at yahoo.com.au]
Sent: Wednesday, December 17, 2008 9:22 PM
To: mrtg at lists.oetiker.ch
Subject: [mrtg] Incorrect MRTG plots for Cisco-RTTMON-MIB








Hi 
I have just started using MRTG. My primary requirement is to plot Cisco IP SLA operation results using Cisco-RTTmon-MIB. 
I have been trying to plot Packet Loss value between SD. I have tried different config options. I have compared MRTG results by polling the OID using a MIB browser. 
The CLI output matches the MIB browser (i am using correct OID) but I get different results on the MRTG. Is it due to the way MRTG works or normalises data for plotting. I was under the impression that if a 'gauge' value is polled using MRTG it will simply plot that. 
I have also noticed the current value is always bit off to the actual CLI value

Following is the config for SD packet loss. 
 
 
Target[100.100.100.1-PktLossSD]: .1.3.6.1.4.1.9.9.42.1.5.2.1.26.101&.1.3.6.1.4.1.9.9.42.1.5.2.1.26.101:Test at 100.100.100.1
Maxbytes[100.100.100.1-PktLossSD]: 500
XSize[100.100.100.1-PktLossSD]:500
YSize[100.100.100.1-PktLossSD]:250
Title[100.100.100.1-PktLossSD]: Packet Loss Source-Destination 
PageTop[100.100.100.1-PktLossSD]: Packet Loss SD Test 
ShortLegend[100.100.100.1-PktLossSD]: Pkts
YLegend[100.100.100.1-PktLossSD]: Packets
Legend1[100.100.100.1-PktLossSD]: Pkt Loss SD
Legend2[100.100.100.1-PktLossSD]:
LegendI[100.100.100.1-PktLossSD]: SD
LegendO[100.100.100.1-PktLossSD]:
WithPeak[100.100.100.1-PktLossSD]:dwm
Options[100.100.100.1-PktLossSD]: growright, nopercent,integer, gauge 
Thanks 


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