sorry for not being clear......I was using MRTG with rateup and i set the poll for every 5 minutes...I was monitoring tcp connections and as well as inbound and outbound traffic...I just gave an example on established tcp connections to show how MRTG is representing the green colour graph(showing everything from zero instead of a constant line)...Yes i do know that MRTG assumes zeroes in absense of traffic.But i have checked the logfile and there were no zeroes at all... This log file shows the entries of the number of tcp connections established...........
it shows 8 8 8 8 8 8 8 8 until i polled for the last time This is my configfile......... Target[tcp]: .1.3.6.1.2.1.6.9.0&.1.3.6.1.2.1.6.9.0:commun...@servermaxbytes[tcp]: 100 options[tcp]:gauge,nopercent,integer,noo So as i understand since the logfile is showing constant entries MRTG should also graph a constant line but instead it was showing graphs starting from zero........But if i represnt the graph by hiding the first variable(that is green colour graph) it is showing a constant line The values below the graph were like tcp connections; max: 8 connections average:8 connections current: 8 connections A cisco router traffic data is for all traffic. A cisco router does not know how to separate http traffic from ftp traffic. A cisco router can only show total traffic. The only traffic i was using in my lab environment was ftp traffic........yeah cisco router traffic includes cdp traffic,ftp traffic...........But MRTG was reporting higher traffic rate than the cisco router is showing Regards Venkat --- On Thu, 12/18/08, Lyle Giese <[email protected]> wrote: From: Lyle Giese <[email protected]> Subject: [mrtg] [Fwd: Re: MRTG-bugs] To: [email protected] Date: Thursday, December 18, 2008, 2:19 AM I did it again. Forgot to include the list in my reply. Lyle -------- Original Message -------- Subject: Re: [mrtg] MRTG-bugs Date: Wed, 17 Dec 2008 14:42:28 -0600 From: Lyle Giese <[email protected]> To: nangineni praneeth <[email protected]> References: <[email protected]> nangineni praneeth wrote: Hello everyone ... I am using MRTG in my masters project and i think i have noticed few errors in it........... 1) I have calculated the log file entries in the log file and took the average over the time for which i ran MRTG.......The value which it shows it different from the value which it graphed....Ther were couple of people who posted this question on the mrtg forum but no one has replied....So does anyone think this is a error or the way i am calculating it is wrong 2) I posted this on the MRTG forum and one of them tried to give me an explanation for this.......its with the green colour traffic....the traffic is showing as if it starts from zero....because i limited the amount of traffic the server sends to 4kBPs so i must see a constant line(or sawtooth like graph) on MRTG graphs but everything starts from zero......i have checked my logfile and there are no zeroes in it.........But the outbound traffic is showingup correctly like a sawtooth waverform(because of TCP).........The same thing happened when i was monitoring TCP connections on the server i suppressed the blue colour graph and the same story every sample MRTG is graphing starts from zero..........I am attaching a png image so that everyone can understand it better 3) I am using cisco router and when i saw the 5 min average input rate and output rate..The values are different from the values MRTG is reporting.................I have checked this many times....... ....I ran MRTG continuously for 15 hours and and found these things Regards Venkat You have not explained what or how you collected this data. MRTG & rateup, in the absence of data, assumes a zero for the time period. MRTG & rateup default to a 5 min sample rate. You state you were collecting traffic from this device somehow, but the graph below shows connections, which is not the same as traffic. Unless you have written a special tool to collect ftp only traffic, the normal snmp data available is for total traffic only. A cisco router traffic data is for all traffic. A cisco router does not know how to separate http traffic from ftp traffic. A cisco router can only show total traffic. In other words, you have made some statements as to what you think are errors, but you have not provided any background as to how the data was collected, graphed, and what parameters were feed into MRTG & rateup. Lyle Giese LCR Computer Services, Inc. _______________________________________________ mrtg mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/mrtg _______________________________________________ mrtg mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/mrtg
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