Entering The Time - Hirschmann MACH 4000 User Manual

Synchronizing the system time in the

7.1 Entering the time

If no reference clock is available, you have the option of entering the system
time in a Switch and then using it like a reference
figuring SNTP")(see on page 15 "Configuring PTP")
Note: When setting the time in zones with summer and winter times, make
an adjustment for the local offset. The Switch can also get the SNTP server
IP address and the local offset from a DHCP server.
Select the Time dialog.
With this dialog you can enter time-related settings independently of the
time synchronization protocol selected.
The "IEEE 1588 time" displays the time determined using PTP. The
"SNTP time" displays the time with reference to Universal Time Co-
ordinated (UTC).
The display is the same worldwide. Local time differences are not
taken into account.
The "System time" uses the "IEEE 1588 / SNTP time", allowing for
the local time difference from "IEEE 1588 / SNTP time".
"System time" = "IEEE 1588 / SNTP time" + "local offset"
"Time source" displays the source of the following time data. The
Switch automatically selects the source with the highest degree of
accuracy.
With "Set time from PC" the Switch takes the PC time as the system
time and calculates the IEEE 1588 / SNTP time using the local time
difference. "IEEE 1588 / SNTP time" = "System time" - "local offset"
2
7.1 Entering the time
clock.(see on page 6 "Con-
.
Release 4.0 11/07
Basic - L3P