Cisco Cisco StadiumVision Mobile Streamer Maintenance Manual
For more information about configuring NTP, see
in
(or the document that corresponds to your release on
).
Consequences of NTP Server Failure
l
Failure to maintain time synchronization between the primary and secondary
server can cause the restore process to fail.
l
Playlist synchronization can be affected and DMPs might not play states correctly.
DMP's might still continue to play multicast video instead of playing script state or
show a black screen.
l
Tasks might execute at a timestamp different from other networked equipment,
which normally is synchronized to a time source.
l
Low-level system logs contains invalid timeframe.
l
To verify NTP, from command line as root: ntpq –p . The output should reflect that
time synchronization is in effect.
Check PTP Operation
The SV-4K and DMP-2K media players use Precision Time Protocol (PTP) to achieve
optimal synchronization. However, an NTP source also must be used to provide initial
clocking to the devices that are elected PTP masters in the network.
For optimized synchronization on the SV-4K and DMP-2K media players, PTP is used.
Only the PTP masters derive a clock using NTP.
To verify PTP operation, see
in
(or the
document that corresponds to your release on
).
Check the DNS Server
The Domain Name System (DNS) is a hierarchical naming system built on a distributed
database for computers, services, or any resource connected to the Internet or a private
network.
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