[CentOS] NIC traffic monitoring, recording and reporting software?

Wed Jul 15 21:08:48 UTC 2009
Lucian@lastdot.org <lucian at lastdot.org>

On Wed, Jul 15, 2009 at 5:53 PM, nate<centos at linuxpowered.net> wrote:
> Les Mikesell wrote:
>> There are several tools that will collect interface traffic data via
>> SNMP and record it so you can graph, show high/low/average values over a
>> time span, etc.  Cacti (in the epel repo) is probably the easiest to set
>> up, OpenNMS (http://www.opennms.org) probably the most complete.  These
>> could also get their data from a port on a managed switch or router if
>> that makes it easier to show the connections you need to split out.
> One thing to note for billing, often times bandwidth is billed on
> a 95th percentile level, and cacti is not good for that if you want
> accuracy.
> We use RTG(in my research last year it seemed RTG was the most
> frequently mentioned tool that was best for this purpose) to measure
> our main pipes for billing comparison purposes, matches much closer
> to what the ISPs say, and cacti is quite a bit off. I wouldn't rely
> on RTG for normal network monitoring(UI isn't that good etc), but
> for links where billing information is important at least for 95th
> percentile, don't rely on cacti alone.
> Note RTG is not the same as MRTG, though I think I recall seeing RTG
> was inspired by MRTG.
> Not sure how OpenNMS handles that sort of thing.
> Not to knock cacti, I use it extensively, currently have a server
> collecting more than 20 million points of data a day.
> nate
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+1 for RTG