NOPs in TCP traffic
Andy Green
fedora at warmcat.com
Mon Jul 12 11:17:04 UTC 2004
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On Monday 12 July 2004 12:05, Tim Waugh wrote:
Hi Tim -
Thanks for your fast and informative reply!
> The 'win 45' stuff is meant to be scaled. At the beginning of the TCP
> connection you'll see 'wscale 7' from your end, i.e. 45<<7, i.e. 5760.
Right, I heard of this but didn't put two and two together.
> Try 'echo 0 > /proc/sys/net/ipv4/tcp_window_scaling'. For me, this
> makes the problem go away entirely.
Yes, me too, thanks for the tip.
> So is this a Linux kernel problem, or a problem at the ISP's end?
> I am seeing this too -- and I have the same ISP.
Ho hum... trying to tell NTL they have a problem doesn't sound like fun.
However... this other machine here with 2.6.7-1.437 says:
[media at backup media]$ cat /proc/sys/net/ipv4/tcp_window_scaling
1
and it does not exhibit the problem. Oh well, I'm happy with the workaround
so far.
Thanks again,
- -Andy
- --
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