Overview

The Network Time Protocol (NTP) feature synchronizes the internal clock of the device over a network connection The device checks the NTP server when you enable NTP, when you change the NTP settings, and every 24–hour period during device cleanup You can specify the maximum amount of time for the difference between the device internal clock and the NTP server clock If the device internal clock exceeds this threshold, the device synchronizes with the NTP server automatically. If your device uses DHCP, valid addresses and offsets are accepted when the DHCP server provides one or both of the following: If the addresses or offset received from the DHCP server are invalid, the values are ignored and the manually set values are applied. The addresses of NTP servers in the network, specified by DHCP option 42 The Greenwich Mean Time (GMT) offset In the Embedded Web Server, click  Properties > Connectivity > Setup . For Protocol, for NTP, click  Edit . For NTP Enabled, select  Enabled . Select  IPv4   Address  or  Host Name . IPv4 Address : For IP Address: Port and Alternate IP Address: Port, type the IP addresses and port numbers The default port number is 123. Host Name : For Host Name: Port, and Alternate Host Name: Port, type the host names and port numbers The default port number is 123. IPv4 Address : For IP Address: Port and Alternate IP Address: Port, type the IP addresses and port numbers The default port number is 123. Host Name : For Host Name: Port, and Alternate Host Name: Port, type the host names and port numbers The default port number is 123. For  Time threshold for triggering device re-sync with NTP , select a time in seconds The range is 10–150 seconds The default value is 110 seconds.  Note : Changes to these settings cause the printer to restart. For synchronizing the time manually, click  Manual Time Sync The Manual Time Sync page appears with a message Device will restart if correction is required To synchronize the time, click  Continue To implement the time change, the printer restarts automatically. To test connectivity to the NTP server, click NTP Destination Test. If the test succeeds, a confirmation message appears. If the test fails, an error message appears Verify the NTP server settings, then repeat the test. If the test succeeds, a confirmation message appears. If the test fails, an error message appears Verify the NTP server settings, then repeat the test. Click  Save Changes to these settings can cause the printer to restart.