Kernel 2.6.17 and 2.6.18-3-K7 network problem

2007-01-03 Thread Antonio Laterza
Hi all, I posted the question below to debian-user ...
maybe nobody experienced my same issue. How can I
contribute to eventually solve? Which other information are
necessary in order to focalize the problem?


I want to ask if somebody experienced the same
problem I have with etch installation and in general with
kernel 2.6.17 and 2.6.18 on AMD K7. The computer where I
tried has 2 network cards, I connect only 1 card and it
receives the IP address.

I experienced the problem installing etch using a
businesscard, using knoppix 5.0.1 (use kernel 2.6.17) and
upgrading from sarge (kernel 2.6.8) to etch (kernel
2.6.18). 
In the last case, with the same installation if I chose
kernel 2.6.8 I have no network problem (but X does not work
:( ). If I choose the kernel 2.6.18 X is OK but I am not
able to reache many sites. I can navigate very few sites
example: www.google.com and www.mozilla.org. Using ethereal
seems that the HTTP request go out (i.e. GET / ) but
the ACK packet does not ask the next packet number  in
other words seems that the GET request never reched the
final site.

I tryied to reduce the MTU but was unsuccesful. 
Last details: the network card is the Realtek 

Regards
anlater 


anlater
http://studioinglaterza.blogspot.com/


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Re: Kernel 2.6.17 and 2.6.18-3-K7 network problem [SOLVED]

2007-01-03 Thread Antonio Laterza

--- Hendrik Sattler [EMAIL PROTECTED] ha scritto:

 Am Mittwoch 03 Januar 2007 09:53 schrieb Antonio Laterza:
  :( ). If I choose the kernel 2.6.18 X is OK but I am
 not
 
  able to reache many sites. I can navigate very few
 sites
  example: www.google.com and www.mozilla.org. Using
 ethereal
  seems that the HTTP request go out (i.e. GET / )
 but
  the ACK packet does not ask the next packet number 
 in
  other words seems that the GET request never reched the
  final site.
 
 TCP windows scaling comes to mind:
 http://lwn.net/Articles/92727/
 
 HS
Wow!!! Best regards Hendrik!!!
Most probabily the provider's router is buggy but it solved
the problem.
The solution was that reported by article pointed by you:

In the mean time, anybody running a current kernel who is
having trouble connecting to a needed site can work around
the problem with a command like:

echo 0  /proc/sys/net/ipv4/tcp_default_win_scale 

or by adding a line like:

net.ipv4.tcp_default_win_scale = 0

to /etc/sysctl.conf.



anlater
http://studioinglaterza.blogspot.com/


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Re: Kernel 2.6.17 and 2.6.18-3-K7 network problem [SOLVED]

2007-01-03 Thread Antonio Laterza

--- Antonio Laterza [EMAIL PROTECTED] ha scritto:

 Hi all, I posted the question below to debian-user ...
 maybe nobody experienced my same issue. How can I
 contribute to eventually solve? Which other information
 are
 necessary in order to focalize the problem?
 
 
 I want to ask if somebody experienced the same
 problem I have with etch installation and in general with
 kernel 2.6.17 and 2.6.18 on AMD K7. The computer where I
 tried has 2 network cards, I connect only 1 card and it
 receives the IP address.

Hi all, just to report the solution was suggested by
Hendrik Sattler on debian-devel list.
 TCP windows scaling comes to mind:
 http://lwn.net/Articles/92727/
 
 HS
Wow!!! Best regards Hendrik!!!
Most probabily the provider's router is buggy but it solved
the problem.
The solution was that reported by article pointed by you:

In the mean time, anybody running a current kernel who is
having trouble connecting to a needed site can work around
the problem with a command like:

echo 0  /proc/sys/net/ipv4/tcp_default_win_scale 

or by adding a line like:

net.ipv4.tcp_default_win_scale = 0

to /etc/sysctl.conf.



anlater
http://studioinglaterza.blogspot.com/


__
Do You Yahoo!?
Poco spazio e tanto spam? Yahoo! Mail ti protegge dallo spam e ti da tanto 
spazio gratuito per i tuoi file e i messaggi 
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