Summit WM3000 Series Controller System Reference Guide 267
3 Refer to the following SNTP Association data for each SNTP association displayed:
Address
Displays the numeric IP address of the SNTP resource (Server) providing
SNTP updates to the controller.
Reference Clock
Displays the address of the time source the controller is synchronized to.
Stratum
Displays how many hops the controller is from a SNTP time source. The
controller automatically chooses the SNTP resource with the lowest
stratum. The SNTP supported controller is careful to avoid synchronizing
to a server that may not be accurate. Thus, the NTP enabled controller
never synchronizes to a machine not synchronized itself. The SNTP
enabled controller compares the time reported by several sources, and
does not synchronize to a time source whose time is significantly different
than others, even if its stratum is lower.
When
Displays the date and time when the SNTP association was initiated. Has
the association been trouble free over that time?
Peer Poll
Displays the maximum interval between successive messages, in seconds
to the nearest power of two.
Reach
Displays the status of the last eight SNTP messages. If an SNTP packet
is lost, the lost packet is tracked over the next eight SNTP messages.
Delay (sec)
Displays the round-trip delay (in seconds) for SNTP broadcasts between
the SNTP server and the controller.
Offset (sec)
Displays the calculated offset between the controller and SNTP server.
The controller adjusts its clock to match the server's time value. The
offset gravitates toward zero over time, but never completely reduces its
offset to zero.
Dispersion (sec)
Displays how scattered the time offsets are (in seconds) from a SNTP
time server
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