Question Regarding 09-268 SPL - STP Extended Buffer Support

Olawsky, Barry Barry.Olawsky at
Mon Nov 2 09:30:02 PST 2009

* From the T10 Reflector (t10 at, posted by:
* "Olawsky, Barry" <Barry.Olawsky at>
Tim (Symons),
During the SFF-8636/8449 conference call on October 22nd a question was posed
for which we need your assistance to answer. Tom Palkert of Luxtera proposed
using cable length to estimate the end-device to end-device propagation
delay. To determine if this is a feasible technique, we need to know the
maximum acceptable total propagation delay error including resolution and
accuracy errors. Since you propose limits on this parameter in 09-268 we
thought you might have valuable input on this topic.
Barry Olawsky
Hewlett Packard
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