Hirschmann RS20 User Manual page 103

Synchronizing the System Time in the
Network
Configuration SNTP Client
In "Client status" you switch the SNTP client of the device on/off.
In "External server address" you enter the IP address of the
SNTP server from which the device periodically requests the
system time.
In "Redundant server address" you enter the IP address of the
SNTP server from which the device periodically requests the
system time, if it does not receive a response to a request from
the "External server address" within 1 second.
Note: If you are receiving the system time from an external/
redundant server address, you do not accept any SNTP
Broadcasts (see below). You thus ensure that the device uses
the time of the server entered.
In "Server request interval" you specify the interval at which the
device requests SNTP packets (valid entries: 1 s to 3600 s, on
delivery: 30 s).
With "Accept SNTP Broadcasts" the device takes the system
time from SNTP Broadcast/Multicast packets that it receives.
With "Deactivate client after synchronization", the device only
synchronizes its system time with the SNTP server one time after
the client status is activated, then it switches the client off.
Note: If you have enabled PTP at the same time, the SNTP client
first collects 60 time stamps before it deactivates itself. The
device thus determines the drift compensation for its PTP clock.
With the preset server request interval, this takes about half an
hour.
Basic Configuration
Release 6.0 07/2010
7.2 SNTP
103