Hirschmann PowerMICE User Manual

Synchronizing the System Time in the
Network
UM Basic Configuration L3P
Release 7.1 12/2011
7.1 Entering the Time
123
 Select the Time dialog.
With this dialog you can enter time-related settings independently of the
time synchronization protocol selected.
 “System time (UTC)” displays the time determined using SNTP or
PTP.
The display is the same worldwide. Local time differences are not
taken into account.
Note: If the time source is PTP, note that the PTP time uses the TAI
time scale. TAI time is 34 s ahead of UTC time (as of 01.01.2011).
If the UTC offset is configured correctly on the PTP reference clock,
the device corrects this difference automatically when displaying
“System time (UTC)”.
 The ”system time” uses "System Time (UTC)", allowing for the local
time difference from "System Time (UTC)".
“System time” = “System Time (UTC)” + “local offset”.
 “Time source” displays the source of the following time data. The
device automatically selects the source with the greatest accuracy.
Possible sources are: local, ptp and sntp. The source is initially
local.
If PTP is activated and the device receives a valid PTP frame, it sets
its time source to ptp. If SNTP is activated and if the device receives
a valid SNTP packet, the device sets its time source to sntp. The
device gives the PTP time source priority over SNTP
 With “Set time from PC”, the device takes the PC time as the system
time and calculates the system time (UTC) using the local time
difference.
“System Time (UTC)” = “system time” - “local offset”
 The “local offset” is for displaying/entering the time difference
between the local time and the “System Time (UTC)”.
With ”Set offset from PC“, the device determines the time zone on
your PC and uses it to calculate the local time difference.
enable Switch to the privileged EXEC mode.
configure Switch to the Configuration mode.

Hirschmann PowerMICE Specifications

General

Brand	Hirschmann
Model	PowerMICE
Category	Network Router
Language	English