[FADCA] Re: T3 Time

[Chuck Hast]

On 12/22/05, Chuck Hast <wchast at gmail.com> wrote:
> On 12/22/05, Charles S Schuman <k4gbb at earthlink.net> wrote:
> > I'm off on another side trip...
> >
> > While watching Arcadia, I noticed that the "handshake"
> > was taking place every 30 seconds. That is default for the T3 value.
> > This may be a bit short. It keeps the link "hot" or is a QRM generator -
> > depending on your point of view.
> >
> > I believe we had ROSE switches set for 5 - 10 min. This was the reset
> > time. After a link failed, a "link of of order" msg was issued w/o
> > testing the link. The link stayed out of order untill the T3 time
> > expired and was re-tested good.
> >
> > Now, what is the effect of disabling the T3 timer, set to 0, on the axip
> > link? Does that mean that once the axip link drops it is never retested?
> >
> >  From Bud's comments while testing the routing I suspect that the FPAC T3
> > timer works like the ROSE switch.
> >
>
> Here are my timers, I have the T3 timer set to 0 as you can see...
> # Attach AXIP Port
> /usr/sbin/kissattach -m 1580 /dev/ptyq0 9 127.0.0.1
> sleep 1
> echo  50 > /proc/sys/net/ax25/ax0/t1_timeout
> echo  15 > /proc/sys/net/ax25/ax0/t2_timeout
> echo   0 > /proc/sys/net/ax25/ax0/t3_timeout
> echo   3 > /proc/sys/net/ax25/ax0/maximum_retry_count
> echo   7 > /proc/sys/net/ax25/ax0/standard_window_size
> echo 260 > /proc/sys/net/ax25/ax0/maximum_packet_length
> sleep 2
> #
>

Also the ROSE timers are found in the following directory:
/proc/sys/net/rose#

Do a ls on the directory and you will see the files.
Do a cat * on the /rose directory and you will see
the contents of each file.

The only one I have changed is the following:
echo 200000 > /proc/sys/net/rose/no_activity_timeout

I think that I set this one way out because it was the one that
was causing the rapid polls.


--
Chuck Hast
To paraphrase my flight instructor;
"the only dumb question is the one you DID NOT ask resulting in my going
out and having to identify your bits and pieces in the midst of torn
and twisted metal."