White-Rabbit -> Master
White Rabbit network provides two services:
- 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
Timing 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
Data Master
- 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
3 July 2012