This is an ntp.conf file taken from an Active Directory-integrated SLED 10 workstation.

sled-10-ntp-conf

###############
# /etc/ntp.conf file
#
# Sample NTP configuration file.
# See package ntp-doc for documentation, Mini-HOWTO and FAQ.
# Copyright  1998 S.u.S.E. GmbH Fuerth, Germany.
#
# Author: Michael Andres,
#
###############
#
# Radio and modem clocks by convention have addresses in the
# form 127.127.t.u, where t is the clock type and u is a unit
# number in the range 0-3.
#
# Most of these clocks require support in the form of a
# serial port or special bus peripheral. The particular
# device is normally specified by adding a soft link
# /dev/device-u to the particular hardware device involved,
# where u correspond to the unit number above.
#
# Generic DCF77 clock on serial port (Conrad DCF77)
# Address: 127.127.8.u
# Serial Port: /dev/refclock-u
#
# (create soft link /dev/refclock-0 to the particular ttyS?)
#
# server 127.127.8.0 mode 5 prefer
#
# Undisciplined Local Clock. This is a fake driver intended 
# for backup and when no outside source of synchronized time 
# is available.
#
server 127.127.1.0 # local clock (LCL)
fudge 127.127.1.0 stratum 10 # LCL is unsynchronized

#
# Outside source of synchronized time
#
# server xx.xx.xx.xx # IP address of server
server 10.10.10.1

#
# Miscellaneous stuff
#
driftfile /var/lib/ntp/drift/ntp.drift # path for drift file

logfile /var/log/ntp # alternate log file
# logconfig =syncstatus + sysevents
# logconfig =all

# statsdir /tmp/ # directory for statistics files
# filegen peerstats file peerstats type day enable
# filegen loopstats file loopstats type day enable
# filegen clockstats file clockstats type day enable

#
# Authentication stuff
#
# keys /etc/ntp.keys # path for keys file
# trustedkey 1 2 3 4 5 6 14 15 # define trusted keys
# requestkey 15 # key (7) for accessing server variables
# controlkey 15 # key (6) for accessing server variables