sampler-map sm random 1 out-of 512 that helps immensely! Thanks Ron!
I see about 7 gbps on my mrtg inet graphs... I see about 14 mbps on my nfsen graphs... You just taught me that this is because of the sampler on my routers which is 1/512... 14 * 512 = 7,168 Thanks Ron Also, is there a reason why I should use sampler 1 of 512 ? what if I didn't use a sampler at all? Would this mean I would rcv a lot more netflow samples? Is this a bad thing? Am I missing out on some netflow info by sampling or does this just cut down on the exported netflow info via my transit network ? Aaron -----Original Message----- From: Ron Arsenault [mailto:qualityofserv...@gmail.com] Sent: Thursday, July 11, 2013 9:27 AM To: Aaron Cc: Vinicius Esteves; nfsen-discuss@lists.sourceforge.net Subject: Re: [Nfsen-discuss] nfsen bps any protocol graph Hi Aaron, Do you have sampling configured on your netflow exporters? Netflow apps will only have data for flows that they see, and sampling will reduce that value significantly. For example, my aggregate inbound traffic is just shy of 20 Gbps, but as I only sample 1-out-of-6000 random packets, my nfsen bps graph peaks at around 3 Mbps. SNMP-based apps a la MRTG behave differently; since they're just graphing interface counters/OIDs (instead of extrapolating based on netflow samples), they have a better glimpse into raw bits flowing across your links. Does this help? Regards, Ron On Thu, Jul 11, 2013 at 9:41 AM, Aaron <aar...@gvtc.com> wrote: > On the http://ipaddress/nfsen/nfsen.php when i click on the “Bits/s > any protocol” graph I see that the peak usage 21:00 – 22:00 is only > about 13 M (I think that means 13 Mbps)….. this is not what my mrtg > shows….my mrtg shows that my dual 10 gig uplinks usage is about 7 gbps > around that time of the night. Is this nfsen “Bits/s any protocol” > graph supposed to be a literal representation of the traffic that > flows through those dual 10 gbps internet uplinks? I will say this… > mrtg that I speak of is monitoring the same (2) 10 gig interfaces that > I have my netflow exporting from to nfsen….so this should be an apples > to apples comparison as far as I can see…. Lemme know what yall think please. > > > > > > Aaron > > > > From: Vinicius Esteves [mailto:vini.este...@gmail.com] > Sent: Wednesday, July 10, 2013 7:37 PM > To: Aaron > Cc: nfsen-discuss@lists.sourceforge.net > Subject: Re: [Nfsen-discuss] nfsen bps any protocol graph > > > > Even accounting traffic of both directions ? > > > > 2013/7/10 Aaron <aar...@gvtc.com> > > Why is it that my nfsen bps any protocol graph doesn’t match anywhere > close to what my mrtg bps graph shows of my actual internet uplink > utilization ? > > > > Aaron > > > ---------------------------------------------------------------------- > -------- See everything from the browser to the database with > AppDynamics Get end-to-end visibility with application monitoring from > AppDynamics Isolate bottlenecks and diagnose root cause in seconds. > Start your free trial of AppDynamics Pro today! > http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.c > lktrk _______________________________________________ > Nfsen-discuss mailing list > Nfsen-discuss@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/nfsen-discuss > > > > > ---------------------------------------------------------------------- > -------- See everything from the browser to the database with > AppDynamics Get end-to-end visibility with application monitoring from > AppDynamics Isolate bottlenecks and diagnose root cause in seconds. > Start your free trial of AppDynamics Pro today! > http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.c > lktrk _______________________________________________ > Nfsen-discuss mailing list > Nfsen-discuss@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/nfsen-discuss > ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ Nfsen-discuss mailing list Nfsen-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfsen-discuss
