On Tue, Apr 17, 2012 at 11:11 AM, Marc Herbert wrote:
> Back to your problems: it is very difficult to force Linux to send packets
> outside and back to itself. That's because it is a massive waste of
> resources and loss of performance. Fortunately this has been discussed
> already here and else
2012/4/17 Tom Throckmorton
> I can't believe nobody's asked this yet, but, what does scooby do? ;-)
Brilliant :-)
> Seriously, though - as you've described your test, you're trying to
> have iperf test from one on-board NIC to another in the same host.
> What is the purpose of this test?
I do n
On Tue, Apr 17, 2012 at 9:16 AM, Andrew M wrote:
> Yes it's linux. arp_filter sounded like a good place to start but it
> didn't fix the issue. I still get this:
>
> [root@scooby ~]# ifconfig em1 192.168.123.1
> [root@scooby ~]# ifconfig em2 192.168.234.1
> [root@scooby ~]# iperf -p 777 -B192.16
Andrew,
I did not spend enough time reading your first post and missed the fact
your box is trying to send packets to itself back to back. Sorry I pointed
you in the wrong direction (I thought you "only" had two interfaces
connected to the same subnet, another interesting problem)
Back to your
Yes it's linux. arp_filter sounded like a good place to start but it
didn't fix the issue. I still get this:
[root@scooby ~]# ifconfig em1 192.168.123.1
[root@scooby ~]# ifconfig em2 192.168.234.1
[root@scooby ~]# iperf -p 777 -B192.168.234.1 -c192.168.123.1
Is this Linux? If yes try enabling arp_filter. I suspect iperf binds
to an address, not to an interface.
http://www.kernel.org/doc/Documentation/networking/ip-sysctl.txt
arp_filter - BOOLEAN
1 - Allows you to have multiple network interfaces on the same
subnet, and have the ARPs f
I have two network interfaces in one host:
em1192.168.123.1
em2192.168.234.1
I'm running:
SERVER:
[root@scooby ~]# iperf -fm -p 777 -B192.168.123.1 -s
Server listening on TCP port 777
Binding to local address 192.168.123
