Broadcast

The broadcast command is used to transmit broadcast packets on a given interface. Interfaces in the base routing context or the management interface may be specified. Due the relative ease of spoofing of broadcast messages, it is strongly recommended to use authentication with broadcast mode. The messages are transmitted using a destination address that is the NTP Broadcast address.

config>system>time>ntp
            — broadcast [router router-name] {interface 
                — ip-int-name} [key-id key-id] [version version]
                — [ttl ttl]
config>system>time>ntp# 
    — config>system>time>ntp# broadcast interface int11 version 4 
    — 	ttl 127
    — config>system>time>ntp# no shutdown

The following example in the system>time context shows NTP enabled with the broadcast command configured.

A:sim1>config>system>time# info detail
----------------------------------------------
            ntp
                no shutdown
                authentication-check
                ntp-server
                broadcast interface int11 version 4 ttl 127
            exit
A:sim1>config>system>time#