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Chapter 22 System
P-2302HWUDL-P1 Series User’s Guide
257
22.3 Time Setting Overview
Use this screen to set the date, time, and time zone in the ZyXEL Device.
22.3.1 Pre-defined NTP Time Servers List
The ZyXEL Device uses the following pre-defined list of NTP time servers if you do not
specify a time server or it cannot synchronize with the time server you specified.
" The ZyXEL Device can use this pre-defined list of time servers regardless of the
Time Protocol you select.
When the ZyXEL Device uses the pre-defined list of NTP time servers, it randomly selects
one server and tries to synchronize with it. If the synchronization fails, then the ZyXEL
Device goes through the rest of the list in order from the first one tried until either it is
successful or all the pre-defined NTP time servers have been tried.
Dynamic DNS
server auto detect
IP address
Select this if you want the DDNS server to update the IP address of the host
name(s) automatically. Select this option when there are one or more NAT routers
between the ZyXEL Device and the DDNS server.
Note: The DDNS server may not be able to detect the proper IP
address if there is an HTTP proxy server between the
ZyXEL Device and the DDNS server.
Use specified IP
address
Select this if you want to use the specified IP address with the host name(s). Then,
specify the IP address. Use this option if you have a static IP address.
Apply
Click this to save your changes and to apply them to the ZyXEL Device.
Reset
Click this to set every field in this screen to its last-saved value.
Table 106 Maintenance > System > Dynamic DNS
LABEL DESCRIPTION
Table 107 Pre-defined NTP Time Servers
ntp1.cs.wisc.edu
ntp1.gbg.netnod.se
ntp2.cs.wisc.edu
tock.usno.navy.mil
ntp3.cs.wisc.edu
ntp.cs.strath.ac.uk
ntp1.sp.se
time1.stupi.se
tick.stdtime.gov.tw
tock.stdtime.gov.tw
time.stdtime.gov.tw