User`s guide

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Hour
Use this drop-down selection box to select the desired hour at which to switch back to GMT.
Related CLI Commands
Entity
Instance
Parameter
Values
Equivalent Web Parameter
sntp n server
Valid hostname or
IP address
sntp.timeserve.org
SNTP Server
sntp n pwrchk 0,1
Check on Power-up
0 = Off
1 = On
sntp n interval 0 – 255
Update every h hours
Default = 24
sntp n randintsecs 0 - 86400
randomly between s1 and s2
seconds
Use format [s1,s2]
eg min 50, max 500 would be:
[50,500]
sntp n offset -12 - +13 Offset from GMT
sntp n dstonmon 0 – 12
Start: Month
Update for Daylight Saving Time
0 disables daylight saving
sntp n dstonday 0 - 31 Start: Day
sntp n dstonhr 0 - 23 Start: Hour
sntp n dstoffmon 0 - 12 End: Month
sntp n dstoffday 0 - 31 End: Day
sntp n dstoffhr 0 - 23 End: Hour
sntp n ntp 0,1
0 = SNTP
1 = NTP
Default = OFF
Use NTP for greater accuracy
Selecting this checkbox expands the page to show the NTP settings. These are described
below.
NTP is much more accurate than SNTP, with NTP an accuracy of 200 microseconds (1/5000
second) can be achieved. The NTP functionality is in accordance with RFC1305.
Up to 4 remote peers can be configured, all the peers are polled at intervals and the “best”
peer is selected for using as the time source.
SNTP should be configured prior to using NTP. The router will calculate the accuracy of the
NTP time servers over a period of time (up to 2 hours), once the drift compensation is
calculated the NTP client will be used.
The drift compensation value will be stored in NVRAM and written to the config.da0 file, if
the router looses power or is rebooted it will not need to re-calculate the accuracy of the
NTP servers again. The compensation value is constantly monitored to ensure it remains
correct.