Hello,
I try to build server for = syn flood rezist.. i buy IBM x3650 with 24
core xeon cpu, 64 gbit Ram, = SSD disk.. Also i plug in 52598 intel
Intel® 10 Gigabit XF SR Server = Adapter CARD on it.
I install FreeBSD 9.0 Release version. And i find = ixbge-2.4.4.tar.gz
driver
If you put
kern.ipc.nmbclusters=524288
kern.ipc.nmbjumbop=262144
on /boot/loader.conf
it won't be "ix0: RX Descriptors exceed system mbuf max, using default
instead!"
Seyit Özgür
Network Yöneticisi
-Original Message-
From: owner-freebsd-...@freebsd.org [mailt
Hi,
Today we tried to see what happens Malformed syn packets on FreeBSD 9.0
release..
Those packets rise to CPU %100 and stucks..
listening on ix0, link-type EN10MB (Ethernet), capture size 65535 bytes
18:33:30.010215 IP vgn44-1-88-123-89-40.fbx.proxad.net > 85.xxx.xxx.90: tcp
18:33:30.010242 I
.@mac.com]
Sent: Thursday, March 15, 2012 10:12 PM
To: Seyit Özgür
Cc: freebsd-net@freebsd.org
Subject: Re: Malformed syn packet cause %100 cpu and interrupts FreeBSD 9.0
release
On Mar 15, 2012, at 12:49 PM, Seyit Özgür wrote:
> Today we tried to see what happens Malformed syn packets on Free
pport multicore
process? (you know ?). i m up to set up..
i will get tcpdump again with -X param.. then i will post it again..
Thanks for your comments.
From: Chuck Swiger [cswi...@mac.com]
Sent: Thursday, March 15, 2012 10:30 PM
To: Seyit Özgür
Cc: freebsd-
P
%100 but those are bogus SYN packets..
İ think if bogus syn packets don't process by CPU.. it will be OK..
Regards
Seyit Özgür
Network Yöneticisi
From: Michael Sierchio [mailto:ku...@tenebras.com]
Sent: Friday, March 16, 2012 1:21 AM
To: Chuck Swiger
Cc: Seyit Özgür; freebs
retest again..
Seyit Özgür
Network Yöneticisi
-Original Message-
From: owner-freebsd-...@freebsd.org [mailto:owner-freebsd-...@freebsd.org]
On Behalf Of Nikolay Denev
Sent: Friday, March 16, 2012 12:58 AM
To: Seyit Özgür
Cc: freebsd-net@freebsd.org
Subject: Re: Malformed syn packet cause
: 4500 0050 71dc 07d0 6b06 193e 58d0 0825 E..Pq...k..>X..%
0x0010: 556f 065a 437b 0050 8045 710e dfc0 f23b Uo.ZC{.P.Eq;
0x0020: 00a3 3c4c 134c 8807 a83a f215 b40d ..mailto:cswi...@mac.com]
Sent: Thursday, March 15, 2012 10:12 PM
To: Seyit Özgür
Cc: freebsd-n
I solve the problem myself.
Thanks anyway
Best regards.
Seyit Özgür
Network Yöneticisi
-Original Message-
From: Chuck Swiger [mailto:cswi...@mac.com]
Sent: Thursday, March 22, 2012 2:21 AM
To: Seyit Özgür
Cc: freebsd-net@freebsd.org
Subject: Re: Malformed syn packet cause %100 cpu and
it was fragmented packets.. i set up "net.inet.ip.fragpackets=0"
there is no more fragmented packets.. This is not a solution for all
systems..
Just i don't need fragmented packets.. that was stuck my ethernet card while
flooding..
Everything works fine atm.
Seyit Özgür
Net
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