[Oisf-users] Out of band 10Gb Suricata

Brian Hennigar bhennigar at gmail.com
Wed Oct 14 18:34:53 UTC 2015

Hey Cooper,
I turned off the rules and still seeing the same amount of drops.
What is your experience with CUDA?  Instead of upgrading the CPUs, would a
GPU be the easier/cheaper option to get the required performance?  I know
I'll need to find one that is supported by ESXi for the passthrough.

On Wed, Oct 14, 2015 at 2:43 PM, Cooper F. Nelson <cnelson at ucsd.edu> wrote:

> Hash: SHA1
> Have you tried running with no rules yet?  If you are dropping packets
> with no rules then your sensor is over-subscribed and you need more cores.
> We are running a 10Gb tap with 16 (hyper-threaded) cores and the only
> way this is possible for us is via extensive packet filtering.
> If you want to monitor a highly-used 10Gbit interface you really need at
> least 32 cores.  Many of the 10Gb cards don't support more than 16 cores
> (interrupts) per interface, so you may need to use a dual-interface and
> a load balancer to properly hash all the flows.
> - -Coop
> On 10/14/2015 10:34 AM, Brian Hennigar wrote:
> > Hi,
> > I'm testing using Suricata with 10Gb fiber with out of band span ports
> > (not inline) and have noticed a high volume of packet loss.  Are there
> > any best practices for using 10Gb when NOT inline?
> >
> > I'm testing, I'm using esxi 5.5 and a ubuntu 14.04 VM and vmxnet3
> > network adapters.  The vm has 64gb ram and 8 cores.  All offloading
> > options are disabled on the interface.
> >
> - --
> Cooper Nelson
> Network Security Analyst
> UCSD ACT Security Team
> cnelson at ucsd.edu x41042
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