Configuring Sntp - Hirschmann RS20 User Manual

Synchronizing the System Time in the
Network
7.2.3

Configuring SNTP

 Select the Time:SNTP dialog.
 Operation
 In this frame you switch the SNTP function on/off globally.

SNTP Status
 The "Status message" displays statuses of the SNTP client as one or more test
messages, e.g. Server 2 not responding.

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, enter the dedicated server
adress(es) and disable the setting Accept SNTP Broadcasts
(see below). You thus ensure that the device uses the time of the
server(s) entered and does not synchronize to broadcasts that might
not be trustworthy.
 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.
104
7.2 SNTP
UM BasicConfig L2E
Release 8.0 05/2013