pfring and traffic splitting

[Greg Williams <gwillia5 () uccs edu>]

I have been running Snort 2.9.2 for quite a while.  I decided to look at the stats and it was dropping around 50% of 
the packets ~170Mbps.  I decided to install PFRING and update Snort..  My problem is that pfring doesn't look like it's 
splitting any traffic.  Any ideas?

/usr/local/bin/snort -D -c /etc/snort/snort.conf -i eth1@0 --daq-dir /usr/local/lib/daq --daq pfring --daq-mode passive 
--daq-var clusterid=10
/usr/local/bin/snort -D -c /etc/snort/snort1.conf -i eth1@1 --daq-dir /usr/local/lib/daq --daq pfring --daq-mode 
passive --daq-var clusterid=10
/usr/local/bin/snort -D -c /etc/snort/snort2.conf -i eth1@2 --daq-dir /usr/local/lib/daq --daq pfring --daq-mode 
passive --daq-var clusterid=10
/usr/local/bin/snort -D -c /etc/snort/snort3.conf -i eth1@3 --daq-dir /usr/local/lib/daq --daq pfring --daq-mode 
passive --daq-var clusterid=10

To show no alerts are processing(each config file has a different snort log to make sure snort is processing traffic 
differently):

-rw-------. 1 root  root    145163 Nov  5 09:37 snort.log.1352132863
-rw-------. 1 root  root         0 Nov  5 09:40 snort1.log.1352133627
-rw-------. 1 root  root         0 Nov  5 09:40 snort2.log.1352133634
-rw-------. 1 root  root         0 Nov  5 09:40 snort3.log.1352133640

Processes:

30428 ?        00:19:48 snort
30432 ?        00:00:00 snort
30435 ?        00:00:00 snort
30438 ?        00:00:00 snort

Only 1 process is at 100% CPU.  The other snort processes are idle.

Snort 2.9.3.1
DAQ 0.6.2
PFRING - latest
OS CentOS 6.3
Quad core
6GB ram - not pegged at the moment

Greg Williams



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