The PTP within a VPRN service provides access to the PTP clock within the 7750 SR through one or more VPRN services. Only one VPRN or the base routing instance may have configured peers, but all may have discovered peers. If needed, a limit on the maximum number of dynamic peers allowed may be configured on a per routing instance basis.
For more detail on PTP see the 7450 ESS, 7750 SR, 7950 XRS, and VSR Basic System Configuration Guide.