[ntp:questions] An NTP Experiment
Matt Kinard
kinard at raytheon.com
Wed Jul 20 19:54:42 UTC 2005
Folks,
I've set up the following experiment:
I've got two Solaris 9 boxes running NTPv3.
I've got one box (hostname: aggie) set up as an NTP client to a pair of
local NTP servers via a LAN here on site (hence synchronization and
accuracy should not be an issue).
The other Solaris 9 host (named: raider) is set up as an NTP client to
aggie, but I've got it running through a FreeBSD host set up as a router
(hostname: longhorn)
Effectivly, I've got the following configuration:
NTP Server -----------------FreeBSD Router-----------------NTP Client
aggie
longhorn raider
The caveat is i have the ablilty to introduce a variety of network
problems (delays/bandwith issues/etc...) on longhorn via the dummynet
utility.
I've written a script on longhorn that causes the network delay to move
around in a random fashion.
I can use xntpdc on raider to evalute the delay, offset, and dispersion.
Any suggestions as to what I could to to measure the delay's effect on
the overall accuracy on raider?
Thanks,
Matt
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