Symmetricom Time Server User Manual page 50

Chapter 3: Remote Operation
Remote NTP Configuration
Configuring NTP parameters through the TimeVault web interface involves editing the
values in the "ntp.conf" and "ntp.keys" files. You can do this from the Network
Controls page (for details on configuring NTP using serial/Telnet commands, see
page 4-69). See Appendix B for a thorough discussion about the use of NTP, with and
without MD5 authentication.
To configure NTP parameters over the Internet:
1. From the Network Controls web page, click NTP Configuration.
The Network Time Protocol Configuration window appears.
2. Scroll through the "ntp.conf" file, which contains the following default information:
# ALL servers are optional.
# correctly, the servers in this file are not used.
# only when both GPS and ACTS fail. Failure is detected automatically. When
# using these timeservers the system is running with only 15 millisecond
# precision. Up to 10 NTP servers can be assigned. The addresses below are
# examples, and should be changed as required by your network configuration.
#
# The following are public Symmetricom NTP Timeservers. Uncomment one or both
# to enable NTP fallback to Symmetricom if primary synchronization is lost.
Add
# any other server address. Further note the first server in the list is
# the cross-check server.
#
#server
#server
# Private time servers (example only).
#
#server
# Uncommenting the line below enables NTP broadcast mode with MD5 using key 1.
# The key is optional and adds security. If a key is used a corresponding
# key entry must appear in the NTP keys file. A maximum of 20 keys can be
# defined on this line.
#
#broadcast
# The line below defines current trusted keys. See the NTP keys file for
# the keys and corresponding key numbers. Keys 1 and 2 are listed for example.
# All keys listed must appear in the NTP keys file.
# keys regularly.
#
trustedkey
3. Edit the file.
4. Press
TimeVault takes a moment to reset, during which time the parameter display goes
blank. When TimeVault starts up again, the new parameters are in place. If the unit
does not reset, check the status message to see why, re-enter the values, then click
Submit Changes again.
3-36
206.54.0.20
206.54.0.21
192.168.1.35
192.168.1.255
A maximum of 20 trusted keys can be defined on this line.
1 2
or click Submit Changes just below the display of parameter values.
<Enter>
If GPS and/or ACTS are connected and configured
key 1
TimeVault™ User's Manual
Web Access
These servers are useful
Note remember to change
6000-100Ch3.fm Rev. D