Configure System Information
55
S3300 Smart Managed Pro Switch
4. If the SNTP client mode is Unicast, use the SNTP Server Configuration screen to add the
IP address or DNS name of one or more SNTP servers for the switch to poll.
For more information, see SNTP Server Configuration on page 57.
5. In the Port field, specify the local UDP port that the SNTP client receives server packets on.
The allowed range is 1025 to 65535 and 123. The default value is 123. When the default
value is configured, the actual client port value used in SNTP packets is assigned by the
OS.
6. In the Unicast Poll Interval field, specify the number of seconds between unicast poll
requests expressed as a power of two when configured in unicast mode. The allowed range
is 6 to 10. The default value is 6.
7. In the Broadcast Poll Interval field, specify the number of seconds between broadcast poll
requests expressed as a power of two when configured in broadcast mode. Broadcasts
received prior to the expiry of this interval are discarded. The allowed range is 6 to 10. The
default value is 6.
8. In the Unicast Poll Timeout field, specify the number of seconds to wait for an SNTP
response when configured in unicast mode. The allowed range is 1 to 30. The default value
is 5.
9. In the Unicast Poll Retry field, specify the number of times to retry a request to an SNTP
server after the first timeout before attempting to use the next configured server, when
configured in unicast mode. The allowed range is 0 to 10. The default value is 1.
10. When using SNTP/NTP time servers to update the switch’s clock, the time data received
from the server is based on Coordinated Universal Time (UTC) which is the same as
Greenwich Mean Time (GMT). This may not be the time zone in which the switch is located.
Use the Time Zone Name field to configure a time zone specifying the number of hours, and
optionally the number of minutes, difference from UTC with Offset Hours and Offset Minutes.
The time zone can affect the display of the current system time. The default value is UTC.
11. Use the Offset Hours field to specify the number of hours difference from UTC. See the
description for Time Zone Name in
Step 10 above for more information. The allowed range
is –12 to 13. The default value is 0.
12. In the Offset Minutes field, specify the number of minutes difference from UTC. See the
description for Time Zone Name in
Step 10 above for more information. The allowed range
is 0 to 59. The default value is 0.
13. Click the Apply button to send the updated configuration to the switch. Configuration
changes take effect immediately.
The SNTP Global Status table on the System > Management > Time > Time Configuration
screen displays information about the system’s SNTP client.
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