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User manual
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NTP Server
It provides host name or IP address of NTP timing.
System Time
Device time
PC Time
Visitor's own PC, display and switch itself does not matter.
1. NTP server can be empty, the device using the own server update, but must use the correct DNS and gateway.
2. NTP server must have a valid host name or a valid IP address.
3. Only the Administrators have permission to manually configure the device time.
4. Time zones must be configured; either uses the "local time" or "NTP time.
5. The configuration of the NTP server or PC can cause the display is not normal, you can change the time display
format to adjust the display.
6.11.2 Network & Reboot
Device configuration support two modes, DHCP and static IP address, can get the device‟s IP address via
client when the DHCP function is running, if you need NTP that need to connect internet, please enter the
available and correct gateway and DNS address.
IP Address
IP address is an address of 32 bits length which is assigned to the device on the internet. The IP
address consists of two fields: the network number field (net-id) and the Host ID field (host-id). For can
conveniently manage IP address, IP addresses are divided into five categories. As blow
:
Network type Address range Available IP network range
A 0.0.0.0
~
126.255.255.255 1.0.0.0
~
126.0.0.0
B 128.0.0.0
~
191.255.255.255 128.0.0.0
~
191.254.0.0
C 192.0.0.0
~
223.255.255.255 192.0.0.0
~
223.255.254.0
D 224.0.0.0
~
239.255.255.255 Non
E 240.0.0.0
~
246.255.255.255 Non
Others 255.255.255.255 255.255.255.255
A, B, C class address is unicast address; D class address is multicast address; E class address is
reserved to prepare for the future for special purposes.
IP address using dotted decimal.
Each IP address is represented as four decimal integers separated by
decimal points; each integer corresponds to a byte, such as, 10.110.50.101.