Creating A Dhcp Configuration String; Table 3: Dhcp Private Option String Parameters - Inova OnTimeTM Owner's Manual

Inova OnTime Digital Clock Owner's Manual

Creating a DHCP Configuration String

The following table describes the five options that can be used in a configuration string
when establishing a private DHCP server option for automatically configuring the clock. The
format used is option name=option value, with the options separated by semicolons in the
configuration string. This string is added to the DHCP server, as described in the next
section. (See Table 4 for example configuration strings).
Option Option
Name
SNTP Time
timeserver Server name
or IP address
hh:mm time
timezone
offset
none, [rule
dst
specification]
24hour true, false, t, f
showcolon true, false, t, f
Table 4 on the next page contains examples of the configuration strings.
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Configuration
Value Setting
SNTP Time Server
(sntp –h
command)
Timezone offset
(timezone
command)
Daylight Saving
Time
(dst command)
Clock hours
display mode
(display -t
command)
Clock colon
display mode
(display -c
command)

Table 3: DHCP Private Option String Parameters

Description
Sets the SNTP Time server Host Name or IP
address to use for time synchronization. If a Host
Name is used, then the DHCP server must also
provide a DNS server to use to resolve the Host
Name.
Sets the number of hours and minutes to offset
from UTC time when displaying time. This can be
negative. The minutes (:mm) are optional.
•
none - Disable the Daylight Saving Time
adjustment.
•
Other values parsed based on the DST
rule format. See the dst command for
more information, the format is 8
numbers in the order: startDOW startDay
startMonth startTime endDOW endDay
endMonth endTime
If true the clock uses 24hour (military) time format
and disables the AM/PM light, otherwise it uses
12hour time format and enables the AM/PM light.
If true the colon separator between the hours and
minutes is lit.