From: John Beckett 

"Geo."  wrote in message
news::
> > In the same way, it appears that Vista has TCP window scaling enabled by
> > default
>
> Disabling that was one of the first things I tried (timestamps too)

But how did you disable it? I think the only way is the netsh command with
'rss=disabled' (apart from a funky way in a URL I posted in a nearby
message about using some diagnostics from within IE).

At any rate, when you have some time, you should capture some traffic while
the network is idle; then have your problem Vista box copy a file. You only
need maybe a minute of traffic (or maybe longer if it takes longer for the
problem to manifest itself).

> No router in the picture, just a terraserver, a gigE switch, and vista with
> the firewall disabled.

Oh. What is a terraserver? (I've seen the Microsoft web site). And the
traffic is not passing through a firewall?

> > netsh interface tcp set global rss=disabled
> > netsh interface tcp set global autotuninglevel=disabled
>
> I tried the autuninglevel thing but what's the rss one do?

rss is 'receive-side scaling'. Bear in mind that I haven't used Vista and
haven't studied its technical documentation, but I believe that
rss=disabled tells Vista to not advertise a receive window scale option
(i.e. the scale would be 1, as it was in the original TCP spec).

> (guess which finger)



John

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