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
all the devices participating in SNTP. When planning, bear in mind that
the accuracy of the time depends on the signal runtime.
GPS
NTP
Server
192.168.1.0
Figure 26: Example of SNTP cascade
Enable the SNTP function on all 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 the most accurate system time distribution possible, only use
network components (routers, switches, hubs) which support SNTP in the
signal path between the SNTP server and the SNTP client.
Basic Configuration
Release 6.0 07/2010
Switch
Client Server Client
192.168.1.1 192.168.1.2
PLC
Switch Switch
Server Client
192.168.1.3
7.2 SNTP
Client
Client
Server
101