Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3)

[Cameron Byrne <cb.list6 () gmail com>]

On Wed, Jun 29, 2011 at 1:48 PM, Mikael Abrahamsson <swmike () swm pp se> wrote:
> On Wed, 29 Jun 2011, Cameron Byrne wrote:
>
> > Sounds like a vendor specific issue :(
>
> Absolutely, but this is way too typical for these kinds of networks.
>
> > Good tcp vs default tcp will not close the window tight due to some
> > ephemeral loss or delay.  The penalties are generally too strong in tcp
> > for
> > the issues of delay and loss in 3g ... this is one of the main selling
> > points for tcp proxies .... but better done with modern tcp on the clients
> > instead of a middle box
>
> For what kind of devices? I can get full speed (870 kilobyte/s) on 7.2 HSPA
> with single TCP stream on a linux box. Are you referring to handsets that
> get improvement on high latency links?

Yes.  Smartphones on UMTS/HSPA have poor bandwidth-delay product,
hence it being common for mobile providers to proxy the TCP to open
windows faster.

Cameron
> --
> Mikael Abrahamsson    email: swmike () swm pp se