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4.6.3.
NTP servers
In client mode: NTP synchronises in unicast.
To enable NTP Servers mode, follow these steps:
1) TIME menu > NTP > NTP servers:
2) Select the communication mode: multicast or broadcast.
1) Add an NTP server by clicking on
, and the following window will appear:
1
Enter the NTP address of the NTP client.
2
Poll interval: this is the period of time, in seconds, between two queries. The value shown in the NTP configuration
status table (see previous page) will be lower than the minimum value in order to enable quick
synchronisation.
Once synchronisation is complete, this value will increase in order to reduce network traffic and load on the time
servers.
>
Chosen range:
>
Automatic.
>
3 (8 seconds) to 17 (36 hours 24 minutes and 32 seconds).
3
Values: 1, 32, 64, 96, 128, 160,192 and 224. TTL indicates the time during which a data item is to be retained, or
the time during which a data item is kept in the cache.
The initial value of 1 is used for some protocols to ensure that the packets are not routed beyond a segment.
4
Before enabling this parameter, enter the autokey. See Chapter
4.5.2 NTP synchronisation
.
5
The Burst option should be enabled when the server is contactable. It activates the sending of 8 packets with an
interval of 16 seconds between the first and the second, then two seconds for the rest. This option improves the
stability of exchanges.
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