Configuring Sntp - D-Link DGS-3100 User Manual
Dgs-3100 series gigabit stackable managed switch
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Also See for DGS-3100:
- User manual (295 pages) ,
- Cli manual (228 pages) ,
- Installation manual (74 pages)
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To delete a log entry:
1. Select the entry.
2. Click
Configuring SNTP
The device supports the Simple Network Time Protocol (SNTP). SNTP assures accurate network device clock time
synchronization up to the millisecond. Time synchronization is performed by a network SNTP server. The device operates
only as an SNTP client, and cannot provide time services to other systems. The device polls Unicast type servers for the
server time.
Time sources are established by stratums. Stratums define the accuracy of the reference clock. The higher stratum (where
zero is the highest), the more accurate the clock. The device receives time from stratum 1 and above.
The following is an example of stratums:
Stratum
Stratum 0
Stratum 1
Stratum 2
Information received from SNTP servers is evaluated based on the Time level and server type. SNTP time definitions are
assessed and determined by the following time levels:
Time level
T1
T2
T3
T4
Polling for Time Information
SNTP is used to poll time information from SNTP server. Using SNTP enables accurate system clock.
Time Settings Page allows network managers to enable and configure the SNTP time settings on the device. To enable
The
SNTP:
1. Click Configuration > SNTP Settings > Time Settings. The Time Settings Page opens:
. The entry is deleted, and the device is updated.
Example
A real time clock (such as a GPS system) is used as the time source.
A server that is directly linked to a Stratum 0 time source is used as the time source. Stratum 1
time servers provide primary network time standards
The time source is distanced from the Stratum 1 server over a network path. For example, a
Stratum 2 server receives the time over a network link, via NTP, from a Stratum 1 server.
SNTP Time Definition
The time at which the original request was sent by the client.
The time at which the original request was received by the server.
The time at which the server sent the client a reply.
The time at which the client recived the server's reply.
DGS-3100 Series Gigabit Stackable Managed Switch User Manual
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