Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks. This chapter is an overview of the NTP section for BEAM iSERIES routers.


The Time Synchronization section is used to configure general router time settings, like selecting the local time zone, setting a time update interval, synchronizing the time, etc.

The figure below is an example of the Time Synchronization section and the table below provides information about the fields contained in that section:

 Field Name
 Value  Description
 Current system time  time; default: none  Current local time of the router.
 Time zone
 time zone; default: UTC  The router will sync time in accordance with the selected time zone.
 Enable NTP  yes | no; default: yes  Turns NTP on or off.
 Force servers
 yes | no; default: no  Forces unreliable NTP servers.
 Update interval (in seconds)   integer; default: 3660  Defines how often the router will update the time.
 Save time to flash
 yes | no; default: no  Saves last synchronized time to flash memory.
 Count of time synchronizations   integer; default: none  The amount of times that router will perform time synchronizations. Leave empty in order to set to infinite.
 Offset frequency   integer; default: 0  Adjusts the minor drift of the clock so that it will run more accurately.

NTP Server

The router can also act as an NTP Server, providing clock synchronization to other devices in the network. From this section you can turn this feature on or off:

Time Servers

The Time Servers section displays the NTP servers that the router uses. You are provided with 4 default time servers (as seen in the example below), but you can also add custom time servers by clicking the "Add" button or you can edit the given time servers.