[ntp:questions] A question about the NTP delay time formula
Lei
juliettlay at gmail.com
Tue Jun 23 02:36:01 UTC 2009
In RFC 2030(written by Prof. D.Mills), we have roundtrip delay time
formula as follows:
d = (T4 - T1) - (T2 - T3) .................(1)
However, IMHO, it should be
d = (T4-T1) - (T3 - T2)....................(1)'
using which we can get
t = ((T2 - T1) + (T3 - T4)) / 2 ...........(2)
successfully by inserting d into the following formula
t = T3 + d/2 - T4. ...........................(3)
But if we use d as in formula (1), we can not get (2).
Anyone has an idea? :)
Thanks.
-Lei
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