Description

We can configure the local router or switch to listen for broadcast/multicast messages on the local network to discover other servers on the same subnet.

Solution

Configure Devices to Listen to Broadcast Messages Using NTP

root@switch> set system ntp broadcast-client


Configure Devices to Listen to Multicast Messages Using NTP

root@switch> set system ntp multicast-client <address> 


Note: When the router or switch detects a broadcast/multicast message for the first time, it measures the nominal network delay using a brief client-server exchange with the remote server. It then enters broadcast/multicast client mode, in which it listens for, and synchronizes to, succeeding broadcast/multicast messages.

Modification History

2023/07/19: First draft

Related Information

https://www.juniper.net/documentation/us/en/software/junos/time-mgmt/topics/topic-map/network-time-protocol.html#id-10731954