[Samba] Re: Unusable performance over WAN (part 2)

Chris Nighswonger cnighswonger at foundations.edu
Fri Oct 12 19:20:27 GMT 2007


On 10/12/07, James Lamanna <jlamanna at gmail.com> wrote:
> On 10/8/07, James Lamanna <jlamanna at gmail.com> wrote:
> > On 10/8/07, Mike Eggleston <mikeegg1 at mac.com> wrote:
> > > On Mon, 08 Oct 2007, James Lamanna might have said:
> > >
> > > > So as it turns out, apparently it was a window scaling issue.
> > > > Turning on an excessively large window size on the routers (thereby
> > > > enabling dynamic TCP window scaling) seems to have fixed the issue. I
> > > > now get transfer rates around 130-160k/s.
> > >
> > > Great. For hysterical porpoises please document what specific changes
> > > you made on the windows boxes and what specific changes you made on
> > > your router.
> > >
> > > Mike
> > >
> >
> > The only change I made on the routers was I added the global
> > configuration command (both Cisco routers btw)
> > ip tcp window-size 750000
> >
> > -- James
> >
>
> Apparently this was 'temporary'.
> I had to power cycle one of the routers, and lo and behold, the old,
> slow behavior is back even with the window-size being set.
>
> Now I'm clueless again.
>
> -- James

Are you sure there is no other underlying issues with the frame
circuit? Are you taking CRC errors on the T1 interface at either end,
etc.?

Chris


More information about the samba mailing list