On 1/14/2014 4:57 PM, l(_dot_)wood(_at_)surrey(_dot_)ac(_dot_)uk wrote:
I don't think sayng 'oh, that error source is no longer a problem' disproves
Stone's overall point about undetected errors, though the
examples he uses from the technology of the day are necessarily
dated. Dismissing the overall point because the examples use obsolete
technology is throwing the baby out with the bathwater; a host-to-host
error check catches things that intermediate checks cannot.
Measuring error rates across end-to-end Internet traffic is something that
has
not received much attention , as error detection is not
instrumented well - hence citing Stone's published work, in the absence
of awareness of anything newer (and as high profile/immediately recognisable
as sigcomm) in the area.
+1 ... the message in the paper is applicable to layered systems
and internetworks in general. Changes in the link technology
since then don't invalidate it, especially since we know that
the technology not only changes rapidly, but also is always
growing in diverse directions, such that there things almost
universally true today may be turned on their heads tomorrow.
Designs for stacking layers need to follow solid general
principles in order to be robust to changes (above and below).
--
Wes Eddy
MTI Systems