The last section of this document also contains troubleshooting assistance for Win-
dows synchronization. For UNIX/Linux computer synchronization, please visit
http://www.ntp.org/.
3.
If at least one PC can sync to VersaSync, the issue is likely not with VersaSync itself.
The only VersaSync configurations that can prevent certain PCs from syncing to the
time server are the NTP Access table and MD5 authentication. See "Configuring
NTP Symmetric Keys" on page120. A network or PC issue likely exists. A firewall
may be blocking Port 123 (NTP traffic), for example.
4.
NTP in VersaSync must be “in sync” and at a higher Stratum level than Stratum15
(such as Stratum1 or2, for example). This requires VersaSync to be either synced to
its input references or in Holdover mode. Verify the current NTP stratum level and
the sync status.
5.1.8 Troubleshooting Software Update
When experiencing slow data transmission rates, or other network issues, it may be pos-
sible that a system software update will be aborted due to a web server timeout during the
transfer.
In such an event, the Upload New File window will disappear, and the Upgrade System
Software window will be displayed again instead.
Should this happen repeatedly, you can transfer the update file using a file transfer
protocol such as scp, sftp or ftp, if security is not a concern. The update can then be
initiated from the Web UI or Command Line.
Disk Status: In the event of an aborted update process, under Tools >
Upgrade/Backup > Disk Status, check Percent Used: If the number is greater
than 70%, free up disk space, before starting another attempt to update the System
Software.
Disk Health: It is recommended that you verify that your Disk Health is adequate for
the upgrade process. If your Compact Flash card has less than three months estim-
ated on the remaining life, you may not be able to complete an upgrade and must
contact Technical Support.
Rollback System Software
In the event of a malfunctioning of a newly uploaded System software, it is possible to roll-
back to the previously installed system software, a copy of which is maintained by default:
270 VersaSync User Manual
APPENDIX
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