Preparing The Sntp Configuration - Hirschmann RS20 User Manual

Synchronizing the System Time in the
Network
7.2.2

Preparing the SNTP Configuration

 To get an overview of how the time is passed on, draw a network plan with
the devices participating in SNTP. When planning, bear in mind that the
accuracy of the time depends on the signal runtime.
GPS
192.168.1.1
Figure 22: Example of SNTP cascade
 Enable the SNTP function on the devices whose time you want to set
using SNTP.
The SNTP server of the device responds to Unicast requests as soon as
it is enabled.
 If no reference clock is available, specify a device as the reference clock
and set its system time as accurately as possible.
Note: For accurate system time distribution with cascaded SNTP servers
and clients, use only network components (routers, switches, hubs) in the
signal path between the SNTP server and the SNTP client which forward
SNTP packets with a minimized delay.
UM BasicConfig L2E
Release 8.0 05/2013
PLC
Switch
Switch
Client
Client
Switch
7.2 SNTP
103