HP-UX Internet Services Administrator's Guide (August 2003)

Conﬁguring NTP

Advanced NTP Topics

Chapter 4 77

• Broadcaster — Provides time to the speciﬁed remote host, or more

typically, the broadcast address on a LAN. This role is most

appropriate for an NTP time server that provides time to

workstation clients on a LAN.

• Broadcast Client — Listens for and synchronizes with the

broadcast time. This role is most appropriate for time server clients

on a LAN.

NOTE Broadcasting is not recommended especially when used with local clock

impersonators. Broadcasting is an old concept that is no longer used.

Figure 4-3 illustrates the relationship between time servers in a

synchronized subnet.

Figure 4-3 Example of Relationships Between Time Servers

Planning a Multiple-Server NTP Conﬁguration

You must consider the following guidelines when planning your

conﬁguration:

Stratum 1

Stratum 2

Stratum 3

Gordo

Penelope

Golden

Hugo

(Server)

(Client)

(Peer) (Peer)

(Broadcaster)

(Broadcast client)

Bonita