User Manual

8-Port or 16-Port Gigabit Smart Managed Pro Switch Model GS418TPP, GS510TLP, and GS510TPP
Configure System Information User Manual53
6. Select a Client mode radio button to specify the mode of operation of the SNTP client:
• Disable. SNTP is not operational. No SNTP requests are sent from the client and no
received SNTP messages are processed.
• 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.
7. 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 the value 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 operating system.
8. 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.
9. In the Broadcast Poll Interval field, specify the number of seconds between broadcast poll
requests expressed as a power of 2.
Broadcasts received prior to the expiry of this interval are discarded. The allowed range is
6 to 10.
The default value is 6.
10. In the Unicast Poll T
imeout field, specify the number of seconds to wait for an SNTP
response to a unicast poll request.