[Bro] Bro with 10Gb NIC's or higher

Donaldson, John donaldson8 at llnl.gov
Fri Jan 9 10:03:38 PST 2015

I'd agree with all of this. We're monitoring a few 10Gbps network segments with DAG 9.2X2s, too. I'll add in that, when processing that much traffic on a single device, you'll definitely not want to skimp on memory.

I'm not sure which configurations you're using that might be limiting you to 16 streams -- we're  run with at least 24 streams, and (at least with the 9.2X2s) you should be able to work with up to 32 receive streams.


John Donaldson

> -----Original Message-----
> From: bro-bounces at bro.org [mailto:bro-bounces at bro.org] On Behalf Of
> Mike Patterson
> Sent: Thursday, January 08, 2015 7:29 AM
> To: coen bakkers
> Cc: bro at bro.org
> Subject: Re: [Bro] Bro with 10Gb NIC's or higher
> Succinctly, yes, although that provision is a big one.
> I'm running Bro on two 10 gig interfaces, an Intel X520 and an Endace DAG
> 9.2X2. Both perform reasonably well. Although my hardware is somewhat
> underspecced (Dell R710s of differing vintages), I still get tons of useful data.
> If your next question would be "how should I spec my hardware", that's
> quite difficult to answer because it depends on a lot. Get the hottest CPUs
> you can afford, with as many cores. If you're actually sustaining 10+Gb you'll
> probably want at least 20-30 cores. I'm sustaining 4.5Gb or so on 8 3.7Ghz
> cores, but Bro reports 10% or so loss. Note that some hardware
> configurations will limit the number of streams you can feed to Bro, eg my
> DAG can only produce 16 streams so even if I had it in a 24 core box, I'd only
> be making use of 2/3 of my CPU.
> Mike
> > On Jan 7, 2015, at 5:04 AM, coen bakkers <cbakkers at yahoo.de> wrote:
> >
> > Does anyone have experience with higher speed NIC's and Bro? Will it
> sustain 10Gb speeds or more provide the hardware is spec'd appropriately?
> >
> > regards,
> >
> > Coen
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