Re: Vanilla kernel >=2.4.28-rc2 incompatibility with ADSL modem DlinkDSL-G300+

[Alessandro Selli]

Pedro Larroy wrote:

[....]

> > I tried changing the wiring, I swapped the ethernet ports the LAN and
> > ADSL modem where connected to, I swapped the modem with an identical one
> > from a colleague of mine, I upgraded to kernel 2.4.29 all to no avail.
> >  I then tried the 2.4.28-rc{1,2,3} kernels, and I found the 2.4.28-rc1
> > not to exhibit the problem, that manifests itself on the 2.4.28-rc{2,3}
> > kernels.
> >  The problem is sparc-specific, a PC with the very same configuration
> > (Debian stable, plain vanilla kernels etc.) did not suffer any
> > connection drops.

  I forgot to mention: as I was suggested to do by other people, I 
changed the settings of the two parameters:

/proc/sys/net/ipv4/tcp_ecn
/proc/sys/net/ipv4/tcp_default_win_scale

  This did not help, though.

> I have seen similar problems due to high sequence numbers on the tcp
> packets on some adsl routers. Took a while to discover that since the
> connection misteriously ceased to work from some boxes after some time
> transmitting data ok. Looks like some manufacturers such as efficient
> networks adsl routers, doesn't follow the standards.
>
> I'd suggest running tcpdump and doing some observation.

  Thank you for your reply, I'll do as you suggested.

--
Alessandro Selli
Tel: 340.839.73.05
http://alessandro.route-add.net
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