[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
RE: OSI TP4 stack on netbsd
Hi, thanks everyone for your answers.
I saw that test but the problem is I need a TP4 transport socket, implemented
with SOCK_SEQPACKET and not network CLNP datagram.
Finally I could communicate my client-server program with transport tp4 sockets
in a one machine environment. I was simply missing to add the iso protocol to
the loopback interface (lo0) besides the real network interface (tlp0).
However, after 2 days testing and changing parameters, I see throughput in a
single machine is very poor. I tcpdumped packets and saw there were frequent
retransmissions at the TP level and sometimes everything seemed to stuck for
seconds without sending any packets. Ktruss shows the select/poll/recvfrom
facilities do not work well with these sockets and it seems related to netiso
The same program between to twin machines does not work, clnp discards the
first ACK data message after connection is done, although it is the same as in
the one-machine case.
So the conclusion is this was already old when it was implemented in bsd 4.4.
Thanks again, I will try other options for tp4/clnp.
[mailto:tech-net-owner%NetBSD.org@localhost] En nombre de Ignatios Souvatzis
Enviado el: miércoles, 02 de mayo de 2012 11:14
Asunto: Re: OSI TP4 stack on netbsd
On Mon, Apr 30, 2012 at 04:11:33PM +0000, Christos Zoulas wrote:
> Marcos Pindado Sebastian <mapindado%aubay.es@localhost> wrote:
> >Hello, I would like to know if osi stack is still supported on
> >NetBSD, particularly TP4 transport services.
> >In the archive list along the years it seems several people tried to
> >make this work but don't seem to get it.
> This has not been tested for many years so it is likely to be broken.
> I you can test/fix it yourself, please do so and submit patches. (...)
My old SOCK_DGRAM test is at
I didn't try it for a while, though, but it might be useful to see if it's the
network or the transport layer you have problems with...
Verificada la ausencia de virus por G Data AntiVirus
Versión: AVA 22.4837 del 02.05.2012
Noticias de virus: www.antiviruslab.com
Main Index |
Thread Index |