D-Link xStack DGS-3610 Series Configuration Manual page 263

DGS-3610 Series Configuration Guide Chapter 23 NTP Configuration
that on the NTP server, set this NTP server on the network as the synchronization server,
and begin to synchronize the time.
DGS-3610(config)# no ntp
DGS-3610(config)# ntp authentication-key 6 md5 wooooop
DGS-3610(config)# ntp authenticate
DGS-3610(config)# ntp trusted-key 6
DGS-3610(config)# ntp server 192.168.210.222 key 6
DGS-3610(config)# ntp synchronize
DGS-3610(config)# interface gigabitEthernet 0/1
DGS-3610(config-if)# ntp disable
DGS-3610(config-if)# no ntp disable
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