User manual

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Cooper Bussmann 2080E-T Managed Ethernet Switch User Manual
25Rev Version 1.0
6.4.2 Time - SNTP
To enable or disable the SNTP time function or set daylight savings time, choose System-->Time-->SNTP.
SNTP (Simple Network Time Protocol) is a simplified version of NTP which is an Internet protocol used to
synchronize the clocks of computers to a specified time reference. Because time typically advances, the time on
various node stations will be different. For the communicating programs running on those devices, this causes time
to jump forward and backward—an undesirable effect. Therefore, the switch provides comprehensive mechanisms
to access national time and frequency dissemination services, and organize the time-synchronization subnet and
the local clock in each participating subnet peer.
Daylight saving time (DST) is the convention of advancing clocks so that afternoons have more daylight and
mornings have less. Typically, clocks are adjusted forward one hour near the start of spring and are adjusted back
an hour in autumn.
Figure 20 SNTP Page
SNTP Client Enable or disable the SNTP function to get the time from the SNTP server. When
enabled, the SNTP client uses the service from the SNTP server and the system time
will follow the SNTP server. When disabled, local time is used without any SNTP
server information.
NOTE when SNTP is enabled, a network connection between the 2080E-T
switch and the SNTP server is required for the SNTP client within the switch
to receive and synchronize time information to the time provided by the
SNTP server.
UTC Timezone Universal Time Coordinated. Sets the local time zone for the switch location. See
Table 1 for a list of time zones.
SNTP Sever Address Sets the SNTP server IP address. You can enter the IP address of a local network
time server or an Internet time server.
Daylight Saving Time Allows you to enable or disable the Daylight Saving Period and Daylight Saving
Offset settings. When enabled, the Daylight Savings settings are in effect, and when
disabled, these settings are ignored.
Daylight Saving
Period
Sets the daylight saving beginning date and time and ending date and time. Enter
the date in the format YYYYMMDD and the time in the format HH:MM (leave a space
between YYYYMMDD and HH:MM).