SNTP

SNTP is a compact, client-only version of the NTP. SNTP can only receive the time from SNTP/NTP servers; it cannot be used to provide time services to other systems. SNTP can be configured in either broadcast or unicast client mode.

config>system
    — time
        — sntp
            — broadcast-client 
            — server-address ip-address [version version-number] [normal | preferred] [interval seconds]
            — no shutdown