On 20 May 98, at 6:52, Karl O. Pinc wrote:
>
> On 19-May-98 Jonathan Gill wrote:
> >Hi all
> >
> >I seem to be having a real problem here, it might be down to Diald or
> >something else but I am completely stuck and don't know where else to
> >look now.
> >
> >The problem
> >
> >I have an ISDN TA attached to a PC running Linux (slackware) which used
> >Diald to dial out. The connection has been running really slow so I
> >started to dig a little to find out what was going on. It seems that
> >about 50% + packedt are being dropped. Does anyone have any ideas as to
> >where I might start to look?
>
> I've seen a problem like that when attempting to drive the serial line
> UART faster than it will go. (setserial speed) (I had a 16550 UART and
> needed a 16550A.) See the SERIAL HOWTO.
I've had the same problem, but I'm using a Cyclades multiport serial
card that shouldn't have any problem going fast. I tried a couple of
things, including upgrading the firmware on the TA (Bitsurfr Pro) to
the latest revision, upgrading diald to the latest patchlevel,
upgrading pppd to 2.3.3, etc.
I noticed that this problem doesn't occur right away--my line speed
is nice and fast, but degrades after a couple of days of being
connected to the provider (I use diald to maintain a continuous link,
rather than serving a demand function). What I did to work around
the problem was to set up a cron script that drops the connection and
immediately brings it back up once a day at 3 am, when nobody's
likely to be using the link anyway.
Nels Lindquist <*>
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