Re: [Openvpn-users] Openvpn slow on asymmetric connections

[Jon Bendtsen <jon.bendtsen@xxxxxxxxxx>]

Den tirsdag 3.jan kl. 11:13 skrev George Thompson:

> Hi there,
>
> The problem I am having with Openvpn is that it is
> slow on connections such as ADSL. It seems to be
> limited by the upstream even thou I download more than
> upload on it. It is set up using tap briding. I use
> Openvpn in many locations. The server is located in
> New York. It is on a 100 mbit/s connection. I tested
> the connection, it really is 100 mbit/s symmetrical.
> One of the locations I use the Openvpn client is at my
> university. The university has a DS3, the speed
> though the Openvpn tunnel there is about 10mbit/s
> symmetrical. Back at home I just recently switched
> over to Verizon's FIOS. Before I had Covad ADSL at
> 1.5mbps/384kbps. The fastest I could download over
> the Openvpn tunnel on this connection was close to 300
> kbits/s. Which almost matches my upload speed of that
> DSL. It could never use up the 1.5mbits/s the DSL had
> avaliable. Now with FIOS I have 15mbits/2mbits. The
> maximum thoughput I can get with Openvpn on this
> connection is around 1.6 mbit/s, which closly matches
> the upload of the FIOS. Is there anything I can do to
> get Openvpn to use the downsteam bandwidth I have? I
> could really use it, if it's possible. I tried
> playing with the MTU msfix and fragment setting with
> no luck. Even tried disable the encryption and lzo-
> comp. That didn't do the trick either. If you guys
> have any ideas please let me know.

If your upload is filled your download will suffer. Do
you run something besides your openvpn that
uploads alot? like p2p?

Do you use udp or tcp?


JonB

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