HP-UX Internet Services Administrator's Guide (August 2003)

Configuring NTP
Getting Started with NTP
Chapter 4 67
Table 4-3 describes time servers in eastern United States.
This time server at Columbia University has a variety of stratum-1,
stratum-2, and stratum-3 sources, which is good. It also has three
sources which are not responding right now (reach=0), and one with very
large delay, offset, and dispersion (tick.CS.UNLV.EDU). As before, this is
due to networking problems between client and server (New York to Las
Vegas, over 3000 km), not some fault with the NTP implementation at
either end. This time server at Columbia is currently synchronized to
NAVOBS1.MIT.EDU, but three others (marked with "+" in column one)
are attractive and could step in immediately if NAVOBS1 failed for any
reason.
Table 4-3 Evaluating Time Servers in Eastern United States
remote refid st t when poll reach delay offset disp
=============================================================================
==
+clepsydra.dec.c usno.pa-x.dec.c 2 u 927 1024 355 108.49 -18.215 3.6
3
otc1.psu.edu .WWV. 1 - 17d 1024 0 28.26 -25.362 16000.
0
*NAVOBS1.MIT.EDU .USNO. 1 u 214 1024 377 38.48 -0.536 0.9
0
tick.CS.UNLV.ED tock.CS.UNLV.ED 3 u 721 1024 377 2113.97 1004.94 824.5
7
132.202.190.65 0.0.0.0 16 - - 1024 0 0.00 0.000 16000.
0
unix.tamu.edu orac.brc.tamus. 3 u 636 1024 377 47.99 3.090 9.7
5
at-gw2-bin.appl 0.0.0.0 16 - - 1024 0 0.00 0.000 16000.
0
-cunixd-ether.cc 192.5.41.209 2 u 172 1024 377 3.39 12.573 1.1
4
cunixd.cc.colum 0.0.0.0 16 u 285 64 0 0.00 0.000 16000.
0
+cs.columbia.edu haven.umd.edu 2 u 906 1024 376 2.41 -5.552 15.1
2
+129.236.2.199 BITSY.MIT.EDU 2 u 423 1024 376 13.43 -14.707 22.6
0
cucise.cis.colu cs.columbia.edu 3 u 62 1024 377 5.84 -1.975 12.70