Traditionally, only clock frequency is required to ensure smooth transmission in a synchronous network. The PTP ordinary clock with slave capability on the router provides another option to reference a Stratum-1 traceable clock across a packet-switched network. The recovered clock can be referenced by the internal SSU and distributed to all slots and ports. Figure: Slave clock shows a PTP ordinary slave clock network configuration.
Figure: Slave clock
The PTP slave capability is implemented on the CPM, version 3 or later. The IEEE 1588v2 messages can ingress and egress the router on any line interface. Figure: Ordinary slave clock operation shows the operation of an ordinary PTP clock in slave mode.
Figure: Ordinary slave clock operation
