3.4.13 NTP Peers
If time is being updated from a Peer time server, then this table shows the current list of Peer servers
that are being checked to maintain the time in the TM2000B. Several Fields are displayed for each
time server.
•
Peer IP – The Peer IP address is the first field displayed.
•
Offset – This is the offset of the peer time servers' time when compared to the internal clock of
the TM2000B.
•
Delay – The round trip delay to the peer time server
•
Stratum – This field shows the stratum level being reported by the peer time server
•
RootD – This is the root delay value of the peer time server. This is the time servers reported
delay from its location to the root of the NTP time setup. A stratum 1 server is considered to be
at the root of an NTP setup/design.
•
Reach – This is a bit field that shows the result of the last 8 lookup attempts of the peer time
server. A value of 0xff signifies that the last 8 attempts have been answered by the time server.
A successful lookup causes a 1 to be shifted in to the LSB of the byte and all other bits to be
shifted 1 bit to the left. A non 0xff value signifies that either the server has just started or that
some lookup requests are not getting answered.
•
Next Time – This is the time that the next request for time from the peer time server will occur.
The NTP client of the TM2000B will start out with a check every 30 seconds or so and then
expand out if time is tracking well to a couple of minutes. The TM2000B doesn't allow the
time sync to extend beyond a few minutes to maintain accurate internal time.
3.4.14 Clients
This area is used to show the current PTP clients. This will display entries only if the TM2000B is in
Unicast PTP mode. In multicast mode, the TM2000B isn't aware of all clients getting time from it.
Installation and Operations Manual | Page 8
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