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jobhunts02 | 2 Dec 2011 00:01
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Re: (no subject)

http://telocom.pro/read.php?uid=21&detail=375&item=18

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Sadık Öztürk | 6 Dec 2011 10:33
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force the traffic to one of the IP address

I'id like to force the traffic to one of the IP address of my server 
to through thesecond one. 

Server got 2 ethernet interfaces, eth0 (192.18.12.1) and eth1 
(192.18.14.1). The aim is to run iperf and others tools from 
192.18.12.1 to 192.18.14.1 in such configuration : 

eth0 <------> { Network } <-----> eth1 

#iperf -s (force listening on eth1) 
#iperf -c 192.18.14.1 (force sending on eth0) 

The problem I have is I cannot tell iperf to listen or send trafic 
through an interface in particular. I've tried with tcpreplay, but I 
cannot reach 1Gbit/s with it, limited near 600Mbit/s, don't know why, 
maybe RAM speed or something like that. 

Sadik
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Marc Herbert | 6 Dec 2011 11:17
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Re: force the traffic to one of the IP address

2011/12/6 Sadık Öztürk <info.sadik <at> gmail.com>:
> I'id like to force the traffic to one of the IP address of my server
> to through thesecond one.

Which operating system are you using?

In case you are using Linux, I think it is near to impossible to force
routing NOT to optimize to loopback. I think there has been
discussions about that on this list, did you check the archive?

Cheers,

Marc

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Cloud Services Checklist: Pricing and Packaging Optimization
This white paper is intended to serve as a reference, checklist and point of 
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of a cloud services business. Read Now!
http://www.accelacomm.com/jaw/sfnl/114/51491232/
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Patrik Rask | 12 Dec 2011 14:47
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UDP loads the CPU

Hi

I am running multiple connctions (about 200) and that goes well with TCP and iperf but not at all with UDP.
Any solutions to reduce the load of the CPU when running UDP?
Do you know the reason?

Regards
Patrik

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