8-Port Gigabit (PoE+) Ethernet Smart Managed Pro Switch with (2 SFP or 2 Copper Ports and)
Cloud Management
Configure System Information User Manual65
The local clock can be set to SNTP only if the following two conditions are met:
• An SNTP server is configured.
• The switch can contact the SNTP server
.
8. Next to Client Mode, select the mode of operation of the SNTP client:
• Unicast. SNTP operates in a point-to-point fashion.
A unicast client sends a request
to a designated server at its unicast address and expects a reply from which it can
determine the time and, optionally, the round-trip delay and local clock offset relative
to the server.
• Broadcast. SNTP operates in the same manner as multicast mode but uses a local
broadcast address instead of a multicast address.
The broadcast address provides a
single-subnet scope while a multicast address provides an Internet-wide scope.
The default value is Unicast.
9. If the SNTP client mode is Unicast, use the SNTP Server Configuration page to add the IP
address or DNS name of one or more SNTP servers for the switch to poll.
For more information, see
Configure an SNTP server on page 69.
10. 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
switch.
11. In the Unicast Poll Interval field, specify the number of seconds between unicast poll
requests expressed as a power of 2.
The allowed range is 6 to 10. The default value is 6.
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