最後更新: 2016-02-22

介紹

RouterOS implements SNTP protocol defined in RFC4330

Simple Network Time Protocol

NTP server or client reaches a very high level of accuracy and avoids abrupt timesteps as much as possible

by using different mathematical and statistical methods and smooth clock speed adjustments,

SNTP can only be recommended for simple applications, where the requirements for accuracy and reliability are not too demanding.

Current time

/system clock> print

                  time: 10:30:23
                  date: aug/24/2018
  time-zone-autodetect: yes
        time-zone-name: Asia/Hong_Kong
            gmt-offset: +08:00
            dst-active: no

Config NTP Client

/system ntp client> set enabled=yes

/system ntp client> set server-dns-names=stdtime.gov.hk

Checking

# 未成功

/system ntp client> print

           enabled: yes
  server-dns-names: stdtime.gov.hk
              mode: unicast
     poll-interval: 16s
     active-server: 223.255.185.2

poll-interval (Time interval; read-only property) :

Current iterval between requests sent to the active server.
Initial value is 16 seconds, and it is increased by doubling to 15 minutes.

active-server (IP address; read-only property) :

Currently selected NTP server address. This value is equal to primary-ntp or secondary-ntp.

# 成功後

/system ntp client> print

             enabled: yes
    server-dns-names: stdtime.gov.hk
                mode: unicast
       poll-interval: 2m8s
       active-server: 118.143.17.82
    last-update-from: 118.143.17.82
  last-update-before: 45s700ms
     last-adjustment: -3ms537us