According to Jorge Matias: While burning my CPU.
>
> On Thu, 25 Mar 1999, Richard Adams wrote:
>
> > MTU 512
> > WINDOW 1888
>
> I'm going to try out those values.
>
> >
> > It would seem you need to look at your radio's and modems first, there must
> > be something wrong.
>
> I thought about that, but I don't know what to look for.
Firstly you could check the eye pattern with a scope, if one is available of
course, if not you will have to try changing jumper settings on your modem
to alter the pattern and play it by (what the results produce).
I am far from an expert on telling others what to look for, it is my
personal experiance that PLL radios work far inferior to XTAL radios, i use
or i should say both radios in question here are Motorola MC80's broght at
dump prices and converted for 9k6 packet. The only thing i had to realy play
with on one radio was the IF stage, the other worked just like a new radio
"out of the box", after re alineing the different stages of course.
>
> > To test a link i send a series of pings as shown below, dont try my example
> > on your link, change the -s to suit your MTU otherwise no packets will be
> > returned.
>
> Why are you using 472 bytes instead of a lower/greater value?
Well i was taught to use packet size's starting with 4 8 16 32 64 and
multitudes thereof, 512 is one of those.
We could use a higher rate, however considering the results we achive we
dont.
Its not only your stn, who will need to reconfigure, but of course your
link partner also.
If you require further information, please reply directly to me, as this
discussion will only get more and more "off topic".
>
> >
> > pipo# ping -c8 -l7 -s472 -i5 44.137.28.42
> >
> > --- 44.137.28.42 ping statistics ---
> > 8 packets transmitted, 8 packets received, 0% packet loss
> > round-trip min/avg/max = 4571.4/6104.9/7638.7 ms
> >
> > Repeat that several times, then you can get a good idea how the link is.
>
> Thanks. I'm try this out.
>
>
> Regards,
> Jorge Matias
>
> - -- --- ------------------------------------------------- --- -- -
> Computer Science Student at Instituto Superior Tecnico (Lisbon)
> A3000/060 32Mb -[Ariadne][MFC III][CV64]- LinuxOS 2.0.36
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>
--
Regards Richard.
[EMAIL PROTECTED]
