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

[Sean Cheesman]

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.)

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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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