The following equipment supports PTP boundary clock capability for time of day/phase recovery:
all fixed platforms listed in Table: IEEE 1588v2 PTP Support per Fixed Platform
all cards listed in Table: IEEE 1588v2 PTP Support per Card on the 7705 SAR-8 Shelf V2 and 7705 SAR-18
The 7705 SAR-8 Shelf V2 can support up to six boundary clocks and the 7705 SAR-18 can support up to eight boundary clocks. The fixed platforms can each support one boundary clock. PTP boundary clocks that recover time of day/phase from a grand master clock or another boundary clock can be used as a reference for the router system time clock, providing high-accuracy OAM timestamping and measurements for the 7705 SAR chassis.
Each PTP boundary clock for time of day/phase is configured for a specific slot where the adapter card or port performs the boundary clock function. On fixed platforms, with the exception of the 7705 SAR-X, this slot is always 1/1. On the 7705 SAR-X, this slot is always either 1/2 or 1/3. Each boundary clock is also associated with a loopback or system address for the router.