ZyXEL Communications P-2302 User Manual

Chapter 22 System

P-2302HWUDL-P1 Series User’s Guide

257

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