Chapter 22 – Configuring NTP

Servers Configuration

Figure 178: NTP Server List

The servers under the IP address column are used as primary synchronization devices. Clicking on a link will allow you to edit that server.

By default the router includes the links pool.ntp.org and 127.127.1.0. The pool.ntp.org address selects a random low stratum server from a pool of ntp servers on the Internet. The 127.127.1.0 is known as a pseudo-address and points to the local hardware clock of the router. This address allows the router to act as a high stratum NTP server to locally connected devices while in a standalone mode.

If you are operating in a private network you will want to delete both of these addresses and substitute that of a locally known low stratum server.

The Version field indicates the version of the NTP protocol used to communicate with this host. Change this only if it is known that the host requires a version other than 4.

The Key field provides an authentication key associated with this host.

The Preferred field determines whether this host is preferred over other hosts in the list.

The Check field link leads to a page that displays the result of an NTP query to this host. Use this feature to determine if the configured host is active.

Peers Configuration

This menu allows you to enter and edit peers. Peers are NTP servers of the same stratum as the router, and are useful when contact is lost with the hosts in the NTP servers menu.

The per-peer configuration information is as described in the previous menu.

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RuggedCom RX1100, RX1000 manual Servers Configuration, Peers Configuration