Synchronizing the System Time in the
Network
UM Basic Configuration L3P
Release
7.1
12/2011
7.2
SNTP
129
IP destination address Send SNTP packet to
0.0.0.0 Nobody
Unicast address (0.0.0.1 - 223.255.255.254) Unicast address
Multicast address (224.0.0.0 - 239.255.255.254),
especially 224.0.1.1 (NTP address)
Multicast address
255.255.255.255 Broadcast address
Table 6: Destination address classes for SNTP and NTP packets
Figure 27: SNTP Dialog
Device 192.168.1.1 192.168.1.2 192.168.1.3
Operation On On On
Server destination address 0.0.0.0 0.0.0.0 0.0.0.0
Server VLAN ID 1 1 1
Send interval 120 120 120
Client external server address 192.168.1.0 192.168.1.1 192.168.1.2
Table 7: Settings for the example (see fig. 26)