Synchronizing the System Time of the
7.2.2 Preparing the SNTP configuration
V To gain an overview of how the system time is passed on, draw a network
plan which shows all devices involved in SNTP. Please bear in mind that
the accuracy of the system time depends on signal runtime.
GPS
NTP-
Server
149.218.112.0
Fig. 25:
Example SNTP
V Switch on the SNTP function on all devices whose time you want to set
using SNTP.
V If you do not have a reference clock at your disposal, use a Switch as the
reference clock, and set its system time as accurately as possible.
Note: For the most accurate system time distribution possible, avoid having
network components (routers, Switches, hubs) which do not support SNTP
in the signal path between the SNTP server and the SNTP client.
Layer 2 Enhanced with Layer 2 Professional
Release 1.0 10/05
Switch
Client
Server
Client
149.218.112.1
149.218.112.2
PLC
Switch
Switch
Server
Client
149.218.112.3
7.2 SNTP
Client
Client
Server
87