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White Rabbit Protocol (WRPTP)
White Rabbit* (WR) is a protocol developed to synchronize nodes in a packet-based network with sub-ns accuracy. The protocol results from the combination of IEEE1588-2008 (Precision Time Protocol, PTP) with two further requirements: precise knowledge of the link delay and clock syntonization over the physical layer with Synchronous Ethernet (SyncE).
White Rabbit evolved into an extension of Precision Time Protocol (PTP), therefore it is referred to as WRPTP. WRPTP is fully compatible with PTP and is currently defined as a PTP Profile.
White Rabbit Specification (WR Spec)
White Rabbit Protocol is described in White Rabbit Specification (WR Spec) which describes:
- hardware requirements which need to be fulfilled to implement WRPTP
- protocol requirements which need to be fulfilled by a device to be WRPTP-compatible
The latest version of WR Spec can be found "here": .