12.1.3 Server function
The Switch can operate as NTP servers. To provide time from the Switch, the time must be synchronized with other NTP servers or it must be operating as a local time server.
- <Structure of this section>
(1) Connection type
(a) Unicast server
As a unicast server, the Switch connects to NTP clients and child NTP servers in client/server mode and provides time.
(b) Broadcast server
When the Switch is used as a broadcast server, the time is provided to NTP client and child NTP servers by setting the configuration command ntp broadcast.
(2) Authentication
The following tables show the authentication keys that are assigned to NTP messages sent and received by the Switch as NTP servers.
|
Connection mode of this equipment |
Transmission from the Switch |
Reception by the Switch |
|---|---|---|
|
Unicast server |
Authentication key for NTP messages received from unicast clients* |
Any authentication key (authentication key set in the Switch configuration) |
|
Broadcast server |
Authentication key specified in key parameter of the configuration command ntp broadcast |
No reception |
- #
-
If you receive a NTP message with no credentials from a unicast client, send a reply message with no credentials.