network-wide high-accuracy time distribution (synchronization) - in
most cases a reference time provided by atomic clock or/and GPS
receiver is distributed over White Rabbit Network. A device which
connects White Rabbit Network with time reference (atomic clock/GPS
receiver) is called Timing Master.
deterministic and reliable data distribution (delivery) - in most
cases a controller-node sends control messages to controlled-nodes.
A device which implements a controller function and sends critical
data onto White Rabbit network is called a Data Master.
a WR Switch or a WR Node connected (and synchronized) to a time
reference (atomic clock or/and GPS receiver)
acts as a PTP Grandmaster
multiple Timing Masters in a single White Rabbit Network are
allowed, note that seamless switchover between them is not yet
Note: the official White Rabbit PTP Core
contains instructions how to setup a Timing Master on a WR Node (SPEC
a WR Node (maybe WR Switch) that implements a functionality of a
controller to the WR Nodes connected by the White Rabbit Network
multiple Timing Masters in a single White Rabbit Network are allowed