Thank you all for the quick replies, Please find below some more details about this subject:
We are using MRTG with RRD and we have a script developed in-house to graph the data from the RRD dbs. I dumped the RRD data in a xml file and the values in the DB and the graph are matching and therefore it seems that mrtg is dumping the data in the RRD in bytes regardless of the option set globally or set on the target itself. I tried to use 64bit counters but also with the same result. It would be really great if someone can shed a light on the below questions: 1-Is it confirmed that MRTG dumps the numbers in bytes in the RRDDB? 2-If so, should the front-end (in my case the graphing script) do the multiplication? 3-If not and MRTG can store the data in the RRDDB in bits, what more can I test/change in my cfg file? -Output from router interface ====== 30 second input rate 10315000 bits/sec, 1005 packets/sec 30 second output rate 10315000 bits/sec, 1005 packets/sec ====== -Attached graph shows 1.2M -mrtg.cfg relevant section below: EnableIPv6: no WorkDir: /rrddbs/ Options[_]: bits,growright RunAsDaemon: Yes LogFormat: rrdtool PathAdd: /data/rrdtool-1.2.19/bin LibAdd: /data/rrdtool-1.2.19/lib/perl Forks: 4 ##### Customer: mytools ## x.x.x.x- Interface 3 Target[mytools_my-router-1_3.interfacegigabitethernet0-0]: 1.3.6.1.2.1.31.1.1.1.6.3&1.3.6.1.2.1.31.1.1.1.10.3:[EMAIL PROTECTED] 5.66::::1:2 MaxBytes[mytools_my-router-1_3.interfacegigabitethernet0-0]: 12500000 Title[mytools_my-router-1_3.interfacegigabitethernet0-0]: Traffic Analysis for mytools x.x.x.x 3 Options[mytools_my-router-1_3.interfacegigabitethernet0-0]: bits,growright Many thanks, --- Georges Touma System and Network Specialist NavLink -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of McDonald, Dan Sent: Monday, October 27, 2008 8:04 PM To: [email protected] Subject: Re: [mrtg] bytes v/s bits On Mon, 2008-10-27 at 17:31 +0100, Alex van den Bogaerdt wrote: > ----- Original Message ----- > From: "Georges Touma" <[EMAIL PROTECTED]> > To: "'Anson Rinesmith'" <[EMAIL PROTECTED]>; > <[email protected]> > > Apologies for the confusion: > > > > It is showing bytes instead of bits although I have the bits option set. > Options[_]: ... > > is only a default. This setting is used if there is no other Option > statement more specific to the target. And more than that, it is only default for Target(s)[]: following the Options[_]: statement. > > Try Options[mytools_my-router-1_3.interfacegigabitethernet0-0]: > bits,growright Right. > > Or find the line currently specifying options for your target, and > remove it. > > You cannot have both. You can, with Options[^]: > And Dan MacDonald's question may also be very important... you can set > all the options you want but if the front-end doesn't use them... I'm trying to remember if the stored value in the rrdfile is in bits, or if it is always bytes and the display always does the multiplication. Seems like sometimes you need to re-create the rrd/logfile when you change the options. -- Daniel J McDonald, CCIE #2495, CISSP #78281, CNX Austin Energy http://www.austinenergy.com
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