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Old 08-05-2011, 05:42 AM   #1
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Host to Host OpenSWAN IPSEC bandwidth

Hi all,

We've set up a host to host VPN tunnel with OpenSwan IPSEC. When we run performance test outside the tunnel (ipsec stopped) we get a bandwidth speed of approximately 800 Mbps. Tested with:
iperf -s on one side
iperf -c IP -t 60 -i 4 on the other side
However, when we start the ipsec tunnel and run exactly the same test we only obtain a speed up to approximately 85 Mbps.

Anyone have an idea if, and how, to configure a bandwidth to be used with an ipsec tunnel?

Kind regards,

Old 05-03-2013, 04:35 AM   #2
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Registered: May 2013
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Hi, I know this is an old post but I have the same issue that Eric, exactly the same. Well, I am not using Openswan but Setkey, but the problem is the same. I assume that ipsec reduce the bandwith, but a 90% is too much.

Did you solve that problem? Do anyone know why it happens?



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