On 11/14/12 1:13 PM, Stefano Marinelli wrote:
Hello everybody,
I've been trying to do some experiments to improve my ADSL speed. The idea is to bond two
ADSLs, create two OpenVPN TAP channels connected to a remote (fast connected) server and
doing a round-robind LAGG aggregation on both nodes. The remote end will NAT. The
operation is successful but, as by design of the R-R configuration, I just get the the
slowest link speed * 2. "loadbalance" mode is way slower.
The first ADSL is more or less 2.2 Mbit/sec, the second one about 1.4 MBit/sec
so the gain is minimal. It's useful just for fault-tolerance.
I thought about doing some sort of "weighted round-robin", giving a weight to the two
tap interfaces. Something like "send 2 packets to the first one, than one to the second
one".
I found some patches [1] for Linux (I'm compiling a kernel right now), but no
information about FreeBSD. My tests show that FreeBSD has a better bonding
throughput (in Linux, I just get a bit more than 2.3 Mbit/sec, on FreeBSD I can
almost get the theorical 2.8Mbit/sec).
Did anyone ever tried something like that? I tried to have a look at the
if_lagg source code, but I think it'd be quite difficult for me to do something
like that, even trying to adapt those Linux patches.
[1] http://sourceforge.net/projects/bonding/forums/forum/77912/topic/2048022
Thank you,
Stefano
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you can use mpd (or ppp) in multilink mode to encapsulate your
outgoing links via two different tcp paths to you other server where
you can undo it..
mpd (and ppp I think) will allow you to select a couple of different
multiplexing schemes, including one where each packet is cut up and
sent, so that the slower link would be sending 1/3 of teh packet and
the faster link would be sending 2/3 of the packet.
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