Re: VoIP stopping TCP traffic?
I have to tell another story, taht could give some hint to the one trying to
trace the problem.:
I have a similar configuration, using a sarge with 2.4.26 , but i do not
use shaping.
The firewall is an old portable, with only 12 MB Ram.
This morning i generated a quite large [460 MB] file on the gateway
>From the other machine in my lan 0a win2k ws] I activated two ssh
session int the gateway. then from the gateway i sent to the win2kWS
(that run a sftp server) the file, using sftp.
While transferring the file, that occurred at near full speed i was unable
to connect to any host outside my lan.
It was not a problem oif bandwidth, sinche the outside connetion was
unused, and i was able to start other ssh connections between the two
machine, without any problem.
When from the gateway i tried to ping the host at the other end of isdn
link i got only 1 packet on 23 with a delay of 11744 milliseconds !
So it is imilar to your problem: when one of the links is hogged, even
the other ones, do not work.
Note that when pinging the packets were sent and came back from the
remote host ok [i could see the light on TA] and seem that is the
gateway to miss such packets !!!!
Il 5 Dec 2004 alle 0:42 Jean-Michel Hiver immise in rete
> I am currently running a Knoppix-hd with 2.6 kernel. The machine is
> connected to the internet through a 64k ISDN channel and to the LAN
> with an ethernet realtek card. I also run asterisk on the box for my
> VoIP needs.
> I usually have no issues _except_ when I place a VoIP phone calls.
> When that happens, very quickly all non-voip traffic on the LAN crawls
> to a halt:
> - I can't SSH from my laptop into the gateway
> - I can't SSH from the gateway to my laptop
> - Any existing open ssh connection freezes as soon as I issue a
> command (ls, vim, whatever) - Ping works fine - Accessing the net from
> the gateway works fine - Accessing the net from the LAN is completely
> broken
--
Leonardo Boselli
Nucleo Informatico e Telematico del Dipartimento Ingegneria Civile
Universita` di Firenze , V. S. Marta 3 - I-50139 Firenze
tel +39 0554796431 cell +39 3488605348 fax +39 055495333
http://www.dicea.unifi.it/~leo
Reply to: